Alert archive / Montana / Excessive Heat Warnings in 2021
Excessive Heat Warning 1, NWS Missoula, MT
NWS Missoula, MT issued this excessive heat warning at Jun 24, 2021, 1:14 PM PDT for Clearwater County, Idaho County, Idaho; 5 counties in Montana. It took effect at Jun 26, 2021, 11:00 AM PDT. It was in force for 5 days. 12 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 24, 2021, 1:14 PM PDT (20:14 UTC)
- In effect from
- Jun 26, 2021, 11:00 AM PDT
- Expired
- Jul 1, 2021, 7:00 PM PDT
- In force
- 5 days
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Flathead County, MT, Lincoln County, MT, Mineral County, MT, Missoula County, MT, Sanders County, MT
The radar
The Missoula radar (KMSX), 79 km from the middle of the area, began a volume at 20:14 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 30, 6:49 PM PDT | TSTM WND GST 50 | 1 W Pollock, ID | |
| Jul 1, 4:40 PM PDT | TSTM WND DMG | 5 Wsw Lolo, MT | MDT REPORTS DOWNED TREES BLOCKING US HIGHWAY 12 FIVE MILES WEST OF LOLO, MT. TIME OF DAMAGE ESTIMATED USING RADAR DATA. |
| Jul 1, 4:44 PM PDT | TSTM WND DMG | 3 S Missoula, MT | TREE DAMAGE. TIME BASED ON A NEARBY WEATHER STATION. |
| Jul 1, 4:53 PM PDT | TSTM WND DMG | 6 Wnw Missoula, MT | TREE DOWN. |
| Jul 1, 4:56 PM PDT | TSTM WND GST 64 | 6 Wnw Missoula, MT | CORRECTS PREVIOUS REPORT OF 64 MPH WIND GUST MEASURED AT KMSO ASOS WITH WIND OBSERVATION TIME OF 556 PM MDT. |
| Jul 1, 5:00 PM PDT | TSTM WND DMG | 1 Sw Missoula, MT | BROADCAST MEDIA REPORTS DOWNED POWER LINES AND ROOF DAMAGE NEAR BICKFORD STREET AND RONAN STREET. TIME OF REPORT ESTIMATED. |
| Jul 1, 5:00 PM PDT | TSTM WND DMG | 2 Ssw Missoula, MT | NWS EMPLOYEE REPORTS DOWNED POWERLINES ON KENT AVE. A 10 TO 12 INCH DIAMETER, 40 FOOT PINE TREE WAS SNAPPED HALFWAY UP. TIME OF DAMAGE ESTIMATED. |
| Jul 1, 5:05 PM PDT | TSTM WND DMG | 5 Wnw Missoula, MT | PHOTOS OF THREE DOWNED TREES ALONG MULLAN TRAIL ROAD IN MISSOULA. |
| Jul 1, 5:15 PM PDT | TSTM WND DMG | 1 Se Turah, MT | 176 CUSTOMERS LOST POWER ALONG THE I-90 CORRIDOR DUE TO DOWNED POWERLINES. TIME OF DAMAGE ESTIMATED USING RADAR DATA. OUTAGE REPORTED TO UTILITY WEBPAGE AT 643 PM. |
| Jul 1, 5:15 PM PDT | TSTM WND DMG | 6 Wnw Missoula, MT | A 8-12 INCH DIAMETER TREE BRANCH WAS DOWNED ALONG MULLAN ROAD IN MISSOULA. REPORT RETRIEVED VIA SOCIAL MEDIA. TIME OF DAMAGE ESTIMATED. |
| Jul 1, 5:53 PM PDT | TSTM WND GST 64 | 6 Wnw Missoula, MT | ASOS STATION KMSO MISSOULA, MT. |
| Jul 1, 6:00 PM PDT | TSTM WND DMG | 1 Nnw Seeley Lake, MT | MDT REPORTS DOWNED TREE BLOCKING MT-83 NORTH OF SEELEY LAKE. TIME OF DAMAGE ESTIMATED BY RADAR DATA. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 8.2 hours before the alert went out and 117 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2992 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 33 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
513 WWUS75 KMSO 242014 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 214 PM MDT Thu Jun 24 2021 IDZ007-008-252200- /O.UPG.KMSO.EH.A.0001.210626T1800Z-210702T0200Z/ /O.NEW.KMSO.EH.W.0001.210626T1800Z-210702T0200Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 114 PM PDT Thu Jun 24 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM SATURDAY TO 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 115 degrees in lowest elevations and 108 degrees expected in the Camas Prairie. This heat wave will likely be a long duration event. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ005-006-252200- /O.UPG.KMSO.EH.A.0001.210626T1800Z-210702T0200Z/ /O.NEW.KMSO.EH.W.0001.210626T1800Z-210702T0200Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 114 PM PDT Thu Jun 24 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM 11 AM SATURDAY TO 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 112 degrees expected in the Selway River Basin. This heat wave will likely be a long duration event. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ001-004-252200- /O.UPG.KMSO.EH.A.0001.210628T1800Z-210702T0200Z/ /O.NEW.KMSO.EH.W.0001.210628T1800Z-210702T0200Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 214 PM MDT Thu Jun 24 2021 ...EXCESSIVE HEAT WARNING IN EFFECT FROM NOON MONDAY TO 8 PM MDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 108 degrees expected. This heat wave will likely be a long duration event. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From noon Monday to 8 PM MDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ002-003-252200- /O.NEW.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ West Glacier Region-Flathead/Mission Valleys- 214 PM MDT Thu Jun 24 2021 ...HEAT ADVISORY IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected for multiple days. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ005-006-043-252200- /O.NEW.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Potomac/Seeley Lake Region- 214 PM MDT Thu Jun 24 2021 ...HEAT ADVISORY IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 102 degrees expected for multiple days. * WHERE...Bitterroot Valley, Missoula, Highway 93 Sula to Lost Trail Pass, Lolo Pass, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ009-010-252200- /O.NEW.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ Western Lemhi County-Eastern Lemhi County- 214 PM MDT Thu Jun 24 2021 ...HEAT ADVISORY IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
5 follow-up statements
023 WWUS75 KMSO 251924 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 124 PM MDT Fri Jun 25 2021 IDZ007-008-262100- /O.CON.KMSO.EH.W.0001.210626T1800Z-210702T0200Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 1224 PM PDT Fri Jun 25 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 115 degrees in lowest elevations and 108 degrees expected in the Camas Prairie. This heat wave will likely be a long duration event. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ005-006-262100- /O.CON.KMSO.EH.W.0001.210626T1800Z-210702T0200Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 1224 PM PDT Fri Jun 25 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM SATURDAY TO 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 112 degrees expected in the Selway River Basin. This heat wave will likely be a long duration event. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ001-004-262100- /O.CON.KMSO.EH.W.0001.210628T1800Z-210702T0200Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 124 PM MDT Fri Jun 25 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON MONDAY TO 8 PM MDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 108 degrees expected. This heat wave will likely be a long duration event. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From noon Monday to 8 PM MDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ002-003-262100- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ West Glacier Region-Flathead/Mission Valleys- 124 PM MDT Fri Jun 25 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected for multiple days. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ005-006-043-262100- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Potomac/Seeley Lake Region- 124 PM MDT Fri Jun 25 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 102 degrees expected for multiple days. * WHERE...Bitterroot Valley, Missoula, Highway 93 Sula to Lost Trail Pass, Lolo Pass, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ009-010-262100- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ Western Lemhi County-Eastern Lemhi County- 124 PM MDT Fri Jun 25 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
812 WWUS75 KMSO 272039 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 239 PM MDT Sun Jun 27 2021 IDZ007-008-282100- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 139 PM PDT Sun Jun 27 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 115 degrees in lowest elevations and 108 degrees expected in the Camas Prairie. This heat wave will likely be a long duration event. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ005-006-282100- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 139 PM PDT Sun Jun 27 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 112 degrees expected in the Selway River Basin. This heat wave will likely be a long duration event. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ001-004-282100- /O.CON.KMSO.EH.W.0001.210628T1800Z-210702T0200Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 239 PM MDT Sun Jun 27 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM NOON MONDAY TO 8 PM MDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 110 degrees expected. This heat wave will likely be a long duration event. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From noon Monday to 8 PM MDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ002-003-282100- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ West Glacier Region-Flathead/Mission Valleys- 239 PM MDT Sun Jun 27 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected for multiple days. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ005-006-043-282100- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Potomac/Seeley Lake Region- 239 PM MDT Sun Jun 27 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 105 degrees expected for multiple days. * WHERE...Bitterroot Valley, Missoula, Highway 93 Sula to Lost Trail Pass, Lolo Pass, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ009-010-282100- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ Western Lemhi County-Eastern Lemhi County- 239 PM MDT Sun Jun 27 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
605 WWUS75 KMSO 282101 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 301 PM MDT Mon Jun 28 2021 IDZ007-008-292115- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 201 PM PDT Mon Jun 28 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 115 degrees in lowest elevations and 108 degrees expected in the Camas Prairie. This heat wave will likely be a long duration event. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ005-006-292115- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 201 PM PDT Mon Jun 28 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 112 degrees expected in the Selway River Basin. This heat wave will likely be a long duration event. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ001-004-292115- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 301 PM MDT Mon Jun 28 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 110 degrees expected. This heat wave will likely be a long duration event. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From noon Monday to 8 PM MDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ002-003-292115- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ West Glacier Region-Flathead/Mission Valleys- 301 PM MDT Mon Jun 28 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected for multiple days. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ005-006-043-292115- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Potomac/Seeley Lake Region- 301 PM MDT Mon Jun 28 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 105 degrees expected for multiple days. * WHERE...Bitterroot Valley, Missoula, Highway 93 Sula to Lost Trail Pass, Lolo Pass, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ009-010-292115- /O.CON.KMSO.HT.Y.0002.210629T1800Z-210702T0200Z/ Western Lemhi County-Eastern Lemhi County- 301 PM MDT Mon Jun 28 2021 ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TUESDAY TO 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
286 WWUS75 KMSO 292046 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 246 PM MDT Tue Jun 29 2021 IDZ007-008-302100- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 146 PM PDT Tue Jun 29 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 115 degrees in lowest elevations and 108 degrees expected in the Camas Prairie. This heat wave will likely be a long duration event. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ005-006-302100- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 146 PM PDT Tue Jun 29 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 112 degrees expected in the Selway River Basin. This heat wave will likely be a long duration event. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ001-004-302100- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 246 PM MDT Tue Jun 29 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 110 degrees expected. This heat wave will likely be a long duration event. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From noon Monday to 8 PM MDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ002-003-302100- /O.CON.KMSO.HT.Y.0002.000000T0000Z-210702T0200Z/ West Glacier Region-Flathead/Mission Valleys- 246 PM MDT Tue Jun 29 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected for multiple days. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ005-006-043-302100- /O.CON.KMSO.HT.Y.0002.000000T0000Z-210702T0200Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Potomac/Seeley Lake Region- 246 PM MDT Tue Jun 29 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Temperatures up to 105 degrees expected for multiple days. * WHERE...Bitterroot Valley, Missoula, Highway 93 Sula to Lost Trail Pass, Lolo Pass, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ009-010-302100- /O.CON.KMSO.HT.Y.0002.000000T0000Z-210702T0200Z/ Western Lemhi County-Eastern Lemhi County- 246 PM MDT Tue Jun 29 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
298 WWUS75 KMSO 302032 NPWMSO URGENT - WEATHER MESSAGE National Weather Service Missoula MT 232 PM MDT Wed Jun 30 2021 IDZ007-008-012100- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Orofino/Grangeville Region-Lower Hells Canyon/Salmon River Region- 132 PM PDT Wed Jun 30 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 115 degrees in lowest elevations and 108 degrees expected in the Camas Prairie. This heat wave will likely be a long duration event. * WHERE...Camas Prairie, Grangeville and vicinity, Greer Grade, Highway 95 Slate Creek to Riggins, and White Bird Grade. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ005-006-012100- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Northern Clearwater Mountains-Southern Clearwater Mountains- 132 PM PDT Wed Jun 30 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 7 PM PDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 112 degrees expected in the Selway River Basin. This heat wave will likely be a long duration event. * WHERE...Elk River, Highway 11 Pierce to Headquarters, Pierce, Dixie, Elk City, and Highway 12 Lowell to Lolo Pass. * WHEN...From 11 AM Saturday to 7 PM PDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ001-004-012100- /O.CON.KMSO.EH.W.0001.000000T0000Z-210702T0200Z/ Kootenai/Cabinet Region-Lower Clark Fork Region- 232 PM MDT Wed Jun 30 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Dangerously hot conditions with temperatures up to 110 degrees expected. This heat wave will likely be a long duration event. * WHERE...Highway 2 Kalispell to Libby, Highway 37 Eureka to Libby, Highway 56 Bull Lake Road, Highway 93 Eureka to Whitefish, Evaro Hill, Highway 200 Thompson Falls to Plains, Highway 200 Trout Creek to Heron, and I-90 Lookout Pass to Haugan. * WHEN...From noon Monday to 8 PM MDT Thursday. * IMPACTS...Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ002-003-012100- /O.CON.KMSO.HT.Y.0002.000000T0000Z-210702T0200Z/ West Glacier Region-Flathead/Mission Valleys- 232 PM MDT Wed Jun 30 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected for multiple days. * WHERE...Bad Rock Canyon, Essex, Highway 83 Bigfork to Swan Lake, Marias Pass, Polebridge, Flathead Lake, Flathead Valley, Mission Valley, and Polson. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ MTZ005-006-043-012100- /O.CON.KMSO.HT.Y.0002.000000T0000Z-210702T0200Z/ Missoula/Bitterroot Valleys-Bitterroot/Sapphire Mountains- Potomac/Seeley Lake Region- 232 PM MDT Wed Jun 30 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Temperatures up to 105 degrees expected for multiple days. * WHERE...Bitterroot Valley, Missoula, Highway 93 Sula to Lost Trail Pass, Lolo Pass, Highway 200 Bonner to Greenough, Highway 83 Seeley Lake to Condon, and I-90 East Missoula to Bearmouth. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$ IDZ009-010-012100- /O.CON.KMSO.HT.Y.0002.000000T0000Z-210702T0200Z/ Western Lemhi County-Eastern Lemhi County- 232 PM MDT Wed Jun 30 2021 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM MDT THURSDAY... * WHAT...Temperatures up to 100 degrees expected. * WHERE...Shoup, Bannock Pass, Highway 28 Tendoy to Lone Pine, Highway 93 Lost Trail Pass to Gibbonsville, Lemhi Pass, and Salmon. * WHEN...From noon Tuesday to 8 PM MDT Thursday. * IMPACTS...Hot temperatures may cause heat illnesses to occur. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. && $$
What forecasters said that day
The local office's own words before this excessive heat warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before this excessive heat warning went out at Jun 24, 1:10 PM PDT, 4 minutes earlier.
Area forecast discussion, Jun 24, 1:10 PM PDT, 4 minutes before
Area Forecast Discussion
National Weather Service Missoula MT
210 PM MDT Thu Jun 24 2021
...Prolonged heatwave with dangerous hot temperatures begins this
weekend and will persist through all of next week...
.DISCUSSION...A shortwave moving south out of Alberta and British
Columbia has initiated thunderstorms moving across the Montana
border into northwest Montana and along the spine of the
Continental Divide this afternoon. Abundant lightning has been the
main feature from these storms, so if you are out and about or are
recreating this afternoon and evening, please take shelter if you
hear thunder in your area. Hail will also be possible with
storms, so be cautious as the evening progresses.
Storms will dissipate by sunset or shortly thereafter, and then
the drying and warming trend begins Friday.
By Saturday, the strong ridge of high pressure set to bring record
heat to the Northern Rockies moves further into Eastern
Washington. Although we expect minor fluctuations in the forecast
as the days progress, our confidence in the overall message is
unwavering. This will be a long-lived and extremely hot and
dangerous heat wave, especially for the most vulnerable.
From the onset, the lowest elevations of central Idaho will be in
extreme heat. As an example, Orifino, ID is forecast to see
multiple days of 110+ degree heat. The last time Orifino saw
temperatures like this was July of 1977. By Monday, extreme
temperatures will elevate into northwest Montana, specifically
valleys west of the Flathead Valley. Currently, the peak heat is
forecast for Tuesday through Thursday, however the forecast models
have slowly been moving this end of this period later in the
week. Our point numerical data goes out 10 days and does not
forecast any major break from this heat wave over that period.
The bottom line is: this will be a long lived event, and will not
be an average summer heatwave.
Always keep in mind to stay hydrated, take frequent breaks while
working outside, check on the most vulnerable in our communities,
and never leave kids or animals unattended in vehicles.
&&
.AVIATION...
We are currently monitoring scattered thunderstorms throughout
the area. These are currently in the vicinity of KGPI and will
continue SE, producing lightning and small hail. As these storms
progress SE, they may impact KMSO between 24/22Z and 25/01Z. As
these storms progress SE, we expect them to weaken, especially
after sunset. Benign and dry conditions will settle in and persist
for the near future.
PM
&&
.MSO WATCHES/WARNINGS/ADVISORIES...
MT...Heat Advisory from noon Tuesday to 8 PM MDT Thursday
Bitterroot/Sapphire Mountains...Missoula/Bitterroot
Valleys...Potomac/Seeley Lake Region.
Excessive Heat Warning from noon Monday to 8 PM MDT Thursday
Kootenai/Cabinet Region...Lower Clark Fork Region.
Heat Advisory from noon Tuesday to 8 PM MDT Thursday
Flathead/Mission Valleys...West Glacier Region.
ID...Heat Advisory from noon Tuesday to 8 PM MDT Thursday Eastern
Lemhi County...Western Lemhi County.
Excessive Heat Warning from 11 AM Saturday to 7 PM PDT Thursday
Northern Clearwater Mountains...Southern Clearwater
Mountains.
Excessive Heat Warning from 11 AM Saturday to 7 PM PDT Thursday
Lower Hells Canyon/Salmon River Region...
Orofino/Grangeville Region.
&&In the hours before
Special weather statement, Jun 24, 12:45 PM PDT, 29 minutes before
Special Weather Statement National Weather Service Missoula MT 145 PM MDT Thu Jun 24 2021 MTZ002-003-242045- Flathead/Mission Valleys MT-West Glacier Region MT- 145 PM MDT Thu Jun 24 2021 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL FLATHEAD COUNTY UNTIL 245 PM MDT... At 145 PM MDT, Doppler radar was tracking a strong thunderstorm 15 miles northwest of West Glacier, or 27 miles north of Evergreen, moving southeast at 20 mph. Pea size hail and winds in excess of 30 mph will be possible with this storm. Locations impacted include... Columbia Falls, West Glacier, Apgar, Coram and Hungry Horse. PRECAUTIONARY/PREPAREDNESS ACTIONS... Frequent cloud to ground lightning is occurring with this storm. Lightning can strike 10 miles away from a thunderstorm. Seek a safe shelter inside a building or vehicle. && LAT...LON 4860 11434 4868 11411 4845 11389 4834 11422 TIME...MOT...LOC 1945Z 335DEG 16KT 4863 11424
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 6:47 PM PDT | Special Weather Statement | MSO | Lewis | 28 min |
| Jun 23, 7:20 PM PDT | Special Weather Statement | MSO | Lewis | 25 min |
| Jun 23, 7:20 PM PDT | Special Weather Statement | MSO | Lewis | 25 min |
| Jun 24, 1:14 PM PDT | Heat Advisory | MSO | Lemhi | 7 days |
| Jun 24, 12:45 PM PDT | Special Weather Statement | MSO | Flathead | 60 min |
| Jun 24, 1:55 PM PDT | Special Weather Statement | MSO | Flathead | 35 min |
| Jun 24, 3:19 PM PDT | Special Weather Statement | MSO | Flathead | 41 min |
| Jun 24, 4:46 PM PDT | Special Weather Statement | MSO | Lake | 44 min |
Nearby
Excessive Heat Warnings in Montana, 2021Excessive Heat Warnings in Idaho, 2021Every excessive heat warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.