Alert archive / Montana / Wind Advisories in 2011
Wind Advisory 25, NWS Missoula, MT
NWS Missoula, MT issued this wind advisory at Nov 17, 2011, 7:57 AM MST for 4 counties in Montana. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Nov 17, 2011, 7:57 AM MST (14:57 UTC)
- Expired
- Nov 17, 2011, 2:00 PM MST
- In force
- 6 hr
- Issued by
- NWS Missoula, MT
Counties Deer Lodge County, MT, Granite County, MT, Powell County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 110 km from the middle of the area, began a volume at 15:00 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, 3.0 hours before the alert went out and 225 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
- 1783 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 372 m²/s²
- 0-3 km storm-relative helicity
- 391 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
049 WWUS75 KMSO 171457 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 757 AM MST THU NOV 17 2011 IDZ007-171600- /O.CAN.KMSO.HW.W.0003.000000T0000Z-111117T1500Z/ OROFINO/GRANGEVILLE REGION- 657 AM PST THU NOV 17 2011 ...HIGH WIND WARNING IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE HIGH WIND WARNING. WEST TO SOUTHWEST WINDS 15 TO 25 WITH GUSTS TO 35 MPH STILL EXPECTED THROUGH THE REMAINDER OF THE MORNING. $$ IDZ008-171600- /O.CAN.KMSO.WI.Y.0024.000000T0000Z-111117T1500Z/ LOWER HELLS CANYON/SALMON RIVER REGION- 657 AM PST THU NOV 17 2011 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WIND ADVISORY. SOUTHWEST WINDS 15 TO 25 WITH GUSTS TO 35 MPH STILL EXPECTED THROUGH THE REMAINDER OF THE MORNING. $$ MTZ007-172100- /O.NEW.KMSO.WI.Y.0025.111117T1457Z-111117T2100Z/ BUTTE/BLACKFOOT REGION- 757 AM MST THU NOV 17 2011 ...WIND ADVISORY IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON. * IMPACTS/TIMING: SOUTHWEST WINDS WILL BE INCREASING THIS MORNING FROM DEERLODGE TO GARRISON JUNCTION...AS WELL OVER MACDONALD PASS. WINDS WILL BE WESTERLY AND BEGIN DECREASING BY MID AFTERNOON. * WINDS: SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 45 MPH. WINDS BECOMING WESTERLY 15 TO 25 MPH WITH GUSTS 35 MPH BY MID AFTERNOON. * LOCATIONS IMPACTED INCLUDE...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. && $$
2 follow-up statements
046 WWUS75 KMSO 171541 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 841 AM MST THU NOV 17 2011 MTZ007-172100- /O.CON.KMSO.WI.Y.0025.000000T0000Z-111117T2100Z/ BUTTE/BLACKFOOT REGION- 841 AM MST THU NOV 17 2011 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON... A WIND ADVISORY REMAINS IN EFFECT UNTIL 2 PM MST THIS AFTERNOON. * IMPACTS/TIMING: SOUTHWEST WINDS WILL BE INCREASING THIS MORNING FROM DEERLODGE TO GARRISON JUNCTION...AS WELL OVER MACDONALD PASS. IN ADDITION TO WIND...SNOW WILL BE DEVELOPING THIS MORNING. THE COMBINATION OF WIND AND SNOW WILL CAUSE LOWER VISIBILITIES DUE TO BLOWING SNOW. WINDS WILL BE WESTERLY AND BEGIN DECREASING BY MID AFTERNOON. * WINDS: SOUTHWEST 25 TO 35 MPH WITH GUSTS TO 45 MPH. WINDS BECOMING WESTERLY 15 TO 25 MPH WITH GUSTS 35 MPH BY MID AFTERNOON. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
081 WWUS75 KMSO 172048 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 148 PM MST THU NOV 17 2011 MTZ007-172200- /O.EXP.KMSO.WI.Y.0025.000000T0000Z-111117T2100Z/ BUTTE/BLACKFOOT REGION- 148 PM MST THU NOV 17 2011 ...WIND ADVISORY WILL EXPIRE AT 2 PM MST THIS AFTERNOON... THE WIND ADVISORY WILL EXPIRE AT 2 PM MST THIS AFTERNOON. WESTERLY WINDS HAVE DECREASED ACROSS THE BUTTE/BLACKFOOT REGION THIS AFTERNOON. THEREFORE...THE WIND ADVISORY HAS BEEN ALLOWED TO EXPIRE. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 4:48 AM MST | Winter Weather Advisory | MSO | Flathead, Lake, Missoula, Ravalli, Sanders | 6 hr |
| Nov 17, 2:36 PM MST | Wind Chill Advisory | MSO | Flathead, Lake | 23 hr |
| Nov 17, 2:36 PM MST | Winter Weather Advisory | MSO | Deer Lodge, Flathead, Granite, Lake, Lincoln, Mineral and 5 more | 38 hr |
Nearby
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.