Alert archive / Montana / Wind Advisories in 2011
Wind Advisory 18, NWS Missoula, MT
NWS Missoula, MT issued this wind advisory at Jul 19, 2011, 3:38 PM MDT for Lemhi County, Idaho; 4 counties in Montana. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Jul 19, 2011, 3:38 PM MDT (21:38 UTC)
- Expired
- Jul 19, 2011, 9:00 PM MDT
- In force
- 5 hr
- Issued by
- NWS Missoula, MT
Counties Lemhi County, ID, Deer Lodge County, MT, Granite County, MT, Powell County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 127 km from the middle of the area, began a volume at 21:41 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
Great_falls, MT (KTFX), launched 12:00Z, 9.6 hours before the alert went out and 254 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
- 3005 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 197 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
042 WWUS75 KMSO 192138 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 338 PM MDT TUE JUL 19 2011 IDZ009-010-MTZ007-200300- /O.NEW.KMSO.WI.Y.0018.110719T2138Z-110720T0300Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-BUTTE/BLACKFOOT REGION- 338 PM MDT TUE JUL 19 2011 ...WIND ADVISORY IN EFFECT UNTIL 9 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 9 PM MDT THIS EVENING. * IMPACTS/TIMING: STRONG SOUTH TO SOUTHWEST WINDS ARE EXPECTED THROUGH 9 PM MDT. * WINDS: SOUTH TO SOUTHWEST 20-25 MPH GUSTING TO 40-45 MPH. * LOCATIONS IMPACTED INCLUDE...SHOUP...BANNOCK PASS...HIGHWAY 28 TENDOY TO LONE PINE...HIGHWAY 93 LOST TRAIL PASS TO GIBBONSVILLE...LEMHI PASS...SALMON...BUTTE...GEORGETOWN LAKE... HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
1 follow-up statement
581 WWUS75 KMSO 200243 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 843 PM MDT TUE JUL 19 2011 IDZ009-010-MTZ007-200345- /O.EXP.KMSO.WI.Y.0018.000000T0000Z-110720T0300Z/ WESTERN LEMHI COUNTY-EASTERN LEMHI COUNTY-BUTTE/BLACKFOOT REGION- 843 PM MDT TUE JUL 19 2011 ...WIND ADVISORY WILL EXPIRE AT 9 PM MDT THIS EVENING... THE WIND ADVISORY WILL EXPIRE AT 9 PM MDT THIS EVENING. WINDS WILL BE DECREASING IN THE NEXT HOUR AS THE UPPER TROUGH PULLS OFF TO THE NORTHEAST AND SUNSET ALLOWS MORE STABLE CONDITIONS TO MOVE INTO THE REGION. THEREFORE THE WIND ADVISORY WILL BE ALLOWED TO EXPIRE AT 9 PM MDT. $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 19, 2:57 PM MDT | Special Weather Statement | MSO | Clearwater | 48 min |
| Jul 19, 4:17 PM MDT | Areal Flood Advisory | MSO | Idaho | 3 hr |
| Jul 19, 4:24 PM MDT | Severe Thunderstorm Warning | MSO | Idaho | 37 min |
| Jul 19, 3:56 PM MDT | Special Weather Statement | MSO | Flathead, Lake | 49 min |
| Jul 19, 4:19 PM MDT | Flash Flood Warning | MSO | Flathead | 74 min |
| Jul 19, 4:54 PM MDT | Special Weather Statement | MSO | Missoula | 36 min |
| Jul 19, 5:14 PM MDT | Severe Thunderstorm Warning | MSO | Missoula | 31 min |
| Jul 19, 5:30 PM MDT | Severe Thunderstorm Warning | MSO | Lake, Missoula, Sanders | 30 min |
| Jul 19, 5:54 PM MDT | Severe Thunderstorm Warning | MSO | Flathead, Missoula, Powell | 51 min |
Nearby
Wind Advisories in Montana, 2011Wind Advisories in Idaho, 2011Every wind advisory in 2011
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.