Alert archive / Washington / Excessive Heat Warnings in 2021
Excessive Heat Warning 2, NWS Spokane, WA
NWS Spokane, WA issued this excessive heat warning at Jul 29, 2021, 1:36 PM PDT for 8 counties in Idaho; 13 counties in Washington. It was in force for 54 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 29, 2021, 1:36 PM PDT (20:36 UTC)
- Expired
- Jul 31, 2021, 8:00 PM PDT
- In force
- 54 hr
- Issued by
- NWS Spokane, WA
All 21 counties
Benewah County, ID, Bonner County, ID, Boundary County, ID, Kootenai County, ID, Latah County, ID, Lewis County, ID, Nez Perce County, ID, Shoshone County, ID, Adams County, WA, Asotin County, WA, Chelan County, WA, Douglas County, WA, Ferry County, WA, Garfield County, WA, Grant County, WA, Lincoln County, WA, Okanogan County, WA, Pend Oreille County, WA, Spokane County, WA, Stevens County, WA, Whitman County, WA
The radar
The Spokane radar (KOTX), 23 km from the middle of the area, began a volume at 20:41 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.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 8.6 hours before the alert went out and 101 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
- 2987 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -36 m²/s²
- 0-3 km storm-relative helicity
- -13 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
080 WWUS76 KOTX 292036 NPWOTX URGENT - WEATHER MESSAGE National Weather Service Spokane WA 136 PM PDT Thu Jul 29 2021 IDZ001>004-026-027-WAZ031>038-041>044-302300- /O.UPG.KOTX.HT.Y.0005.000000T0000Z-210801T0300Z/ /O.NEW.KOTX.EH.W.0002.210729T2036Z-210801T0300Z/ Northern Panhandle-Coeur d'Alene Area-Idaho Palouse-Central Panhandle Mountains-Lewiston Area-Lewis and Southern Nez Perce Counties-Northeast Blue Mountains-Lower Garfield and Asotin Counties-Washington Palouse-Moses Lake Area-Upper Columbia Basin- Spokane Area-Northeast Mountains-Okanogan Highlands-Wenatchee Area-East Slopes Northern Cascades-Okanogan Valley-Waterville Plateau- Including the cities of Omak, Colfax, Quincy, Wallace, Osburn, Worley, Waterville, Cheney, Chewelah, Hayden, Rathdrum, Ephrata, Stehekin, Kamiah, Republic, Odessa, Eastport, St Maries, Winchester, Mazama, Conconully, Moscow, Cashmere, Bonners Ferry, Nezperce, Kellogg, Moses Lake, Othello, Brewster, Tekoa, Uniontown, Mansfield, Peck, Mullan, Pomeroy, Kettle Falls, Rockford, Rosalia, Coulee City, Spokane, Sandpoint, Wauconda, Grand Coulee, Bridgeport, Coeur d'Alene, Craigmont, Leavenworth, Wilbur, La Crosse, Okanogan, Post Falls, Newport, Wenatchee, Chelan, Culdesac, Lewiston, Davenport, Entiat, Priest River, Potlatch, Winthrop, Clarkston, Plummer, Anatone, Lapwai, Gifford, Genesee, Peola, Nespelem, Twisp, Oakesdale, Oroville, Deer Park, Inchelium, Pullman, Colville, Ritzville, and Pinehurst 136 PM PDT Thu Jul 29 2021 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM PDT SATURDAY ELEVATIONS BELOW 4000 FEET... * WHAT...High temperatures warming into the upper 90s and triple digits Friday afternoon and Saturday afternoon. * WHERE...Portions of North and North Central Idaho. Portions of Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...Hot temperatures in the day. Increasingly warm overnight temperatures by the weekend. * ADDITIONAL DETAILS...Friday and Saturday will likely be the hottest days of this heat event. Many lowland locations are expected to reach 100 degrees or more Friday and Saturday afternoon. The afternoon heat combined with unusually warm overnight temperatures Friday night and Saturday night will make it difficult for residents without air conditioners to control the build up of heat within their homes. 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. && $$ CDEWEY
3 follow-up statements
521 WWUS76 KOTX 302225 NPWOTX URGENT - WEATHER MESSAGE National Weather Service Spokane WA 325 PM PDT Fri Jul 30 2021 IDZ001>004-026-027-WAZ031>038-041>044-312300- /O.CON.KOTX.EH.W.0002.000000T0000Z-210801T0300Z/ Northern Panhandle-Coeur d'Alene Area-Idaho Palouse- Central Panhandle Mountains-Lewiston Area- Lewis and Southern Nez Perce Counties-Northeast Blue Mountains- Lower Garfield and Asotin Counties-Washington Palouse- Moses Lake Area-Upper Columbia Basin-Spokane Area- Northeast Mountains-Okanogan Highlands-Wenatchee Area- East Slopes Northern Cascades-Okanogan Valley-Waterville Plateau- Including the cities of Sandpoint, Rathdrum, Bonners Ferry, Priest River, Eastport, Coeur d'Alene, Post Falls, Hayden, Worley, Moscow, Plummer, Potlatch, Genesee, Kellogg, St Maries, Pinehurst, Osburn, Wallace, Mullan, Lewiston, Lapwai, Peck, Culdesac, Gifford, Kamiah, Craigmont, Nezperce, Winchester, Anatone, Peola, Clarkston, Pomeroy, Pullman, Colfax, Rosalia, La Crosse, Oakesdale, Tekoa, Uniontown, Moses Lake, Ephrata, Othello, Quincy, Ritzville, Grand Coulee, Odessa, Wilbur, Coulee City, Spokane, Cheney, Davenport, Rockford, Colville, Deer Park, Chewelah, Newport, Kettle Falls, Republic, Inchelium, Wauconda, Wenatchee, Chelan, Entiat, Cashmere, Leavenworth, Mazama, Twisp, Winthrop, Stehekin, Conconully, Omak, Okanogan, Brewster, Bridgeport, Oroville, Nespelem, Waterville, and Mansfield 325 PM PDT Fri Jul 30 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT SATURDAY... * WHAT...Afternoon temperatures in the upper 90s to 105 degrees Saturday. * WHERE...Portions of North and North Central Idaho. Portions of Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...Until 8 PM PDT Saturday. * IMPACTS...The afternoon heat combined with unusually warm overnight temperatures will make it difficult for residents without air conditioners to control the build up of heat within their homes. 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. && $$
881 WWUS76 KOTX 312147 NPWOTX URGENT - WEATHER MESSAGE National Weather Service Spokane WA 247 PM PDT Sat Jul 31 2021 IDZ001>004-026-027-WAZ031>038-041>044-010300- /O.CON.KOTX.EH.W.0002.000000T0000Z-210801T0300Z/ Northern Panhandle-Coeur d'Alene Area-Idaho Palouse-Central Panhandle Mountains-Lewiston Area-Lewis and Southern Nez Perce Counties-Northeast Blue Mountains-Lower Garfield and Asotin Counties-Washington Palouse-Moses Lake Area-Upper Columbia Basin- Spokane Area-Northeast Mountains-Okanogan Highlands-Wenatchee Area-East Slopes Northern Cascades-Okanogan Valley-Waterville Plateau- Including the cities of Omak, Colfax, Quincy, Wallace, Osburn, Worley, Waterville, Cheney, Chewelah, Hayden, Rathdrum, Ephrata, Stehekin, Kamiah, Republic, Odessa, Eastport, St Maries, Winchester, Mazama, Conconully, Moscow, Cashmere, Bonners Ferry, Nezperce, Kellogg, Moses Lake, Othello, Brewster, Tekoa, Uniontown, Mansfield, Peck, Mullan, Pomeroy, Kettle Falls, Rockford, Rosalia, Coulee City, Spokane, Sandpoint, Wauconda, Grand Coulee, Bridgeport, Coeur d'Alene, Craigmont, Leavenworth, Wilbur, La Crosse, Okanogan, Post Falls, Newport, Wenatchee, Chelan, Culdesac, Lewiston, Davenport, Entiat, Priest River, Potlatch, Winthrop, Clarkston, Plummer, Anatone, Lapwai, Gifford, Genesee, Peola, Nespelem, Twisp, Oakesdale, Oroville, Deer Park, Inchelium, Pullman, Colville, Ritzville, and Pinehurst 247 PM PDT Sat Jul 31 2021 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS EVENING... * WHAT...Afternoon temperatures in the upper 90s to 105 degrees today. * WHERE...Portions of North and North Central Idaho. Portions of Central, East Central, North Central, Northeast, and Southeast Washington. * WHEN...Until 8 PM PDT this evening. * IMPACTS...Heat combined with unusually warm overnight temperatures will make it difficult for residents without air conditioners to control the build up of heat within their homes. 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. && $$ RP
421 WWUS76 KOTX 010251 NPWOTX URGENT - WEATHER MESSAGE National Weather Service Spokane WA 751 PM PDT Sat Jul 31 2021 IDZ001>004-026-027-WAZ031>038-041>044-010400- /O.EXP.KOTX.EH.W.0002.000000T0000Z-210801T0300Z/ Northern Panhandle-Coeur d'Alene Area-Idaho Palouse-Central Panhandle Mountains-Lewiston Area-Lewis and Southern Nez Perce Counties-Northeast Blue Mountains-Lower Garfield and Asotin Counties-Washington Palouse-Moses Lake Area-Upper Columbia Basin- Spokane Area-Northeast Mountains-Okanogan Highlands-Wenatchee Area-East Slopes Northern Cascades-Okanogan Valley-Waterville Plateau- Including the cities of Omak, Colfax, Quincy, Wallace, Osburn, Worley, Waterville, Cheney, Chewelah, Hayden, Rathdrum, Ephrata, Stehekin, Kamiah, Republic, Odessa, Eastport, St Maries, Winchester, Mazama, Conconully, Moscow, Cashmere, Bonners Ferry, Nezperce, Kellogg, Moses Lake, Othello, Brewster, Tekoa, Uniontown, Mansfield, Peck, Mullan, Pomeroy, Kettle Falls, Rockford, Rosalia, Coulee City, Spokane, Sandpoint, Wauconda, Grand Coulee, Bridgeport, Coeur d'Alene, Craigmont, Leavenworth, Wilbur, La Crosse, Okanogan, Post Falls, Newport, Wenatchee, Chelan, Culdesac, Lewiston, Davenport, Entiat, Priest River, Potlatch, Winthrop, Clarkston, Plummer, Anatone, Lapwai, Gifford, Genesee, Peola, Nespelem, Twisp, Oakesdale, Oroville, Deer Park, Inchelium, Pullman, Colville, Ritzville, and Pinehurst 751 PM PDT Sat Jul 31 2021 ...EXCESSIVE HEAT WARNING WILL EXPIRE AT 8 PM PDT THIS EVENING... Temperatures are beginning to cool this evening and therefore the advisory will be allowed to expire. $$ TW
Nearby
Excessive Heat Warnings in Washington, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.