Alert archive / Montana / Wind Advisories in 2012
Wind Advisory 11, NWS Missoula, MT
NWS Missoula, MT issued this wind advisory at Mar 20, 2012, 7:41 AM PDT for Clearwater County, Idaho County, Idaho; 4 counties in Montana. It was in force for 11 hr.
The area
The counties it named.
The facts
- Issued
- Mar 20, 2012, 7:41 AM PDT (14:41 UTC)
- Expired
- Mar 20, 2012, 6:35 PM PDT
- In force
- 11 hr
- Issued by
- NWS Missoula, MT
Counties Clearwater County, ID, Idaho County, ID, Deer Lodge County, MT, Granite County, MT, Powell County, MT, Silver Bow County, MT
The radar
The Missoula radar (KMSX), 84 km from the middle of the area, began a volume at 14:48 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, 2.7 hours before the alert went out and 248 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
- 485 m above ground
- 0-6 km bulk shear
- 86 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 411 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
460 WWUS75 KMSO 201441 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 841 AM MDT TUE MAR 20 2012 IDZ007-008-202245- /O.NEW.KMSO.WI.Y.0011.120320T1441Z-120321T0200Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 741 AM PDT TUE MAR 20 2012 ...WIND ADVISORY IN EFFECT UNTIL 7 PM PDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 7 PM PDT THIS EVENING. * IMPACTS/TIMING: STRONG GUSTY SOUTH WINDS THROUGH THIS AFTERNOON * WINDS: 20 TO 30 MPH WITH GUSTS TO 45 MPH * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE 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. && $$
4 follow-up statements
231 WWUS75 KMSO 201442 CCA NPWMSO URGENT - WEATHER MESSAGE...CORRECTED NATIONAL WEATHER SERVICE MISSOULA MT 842 AM MDT TUE MAR 20 2012 IDZ007-008-202300- /O.COR.KMSO.WI.Y.0011.120320T1442Z-120321T0200Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 742 AM PDT TUE MAR 20 2012 ...WIND ADVISORY IN EFFECT UNTIL 7 PM PDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 7 PM PDT THIS EVENING. * IMPACTS/TIMING: STRONG GUSTY SOUTH WINDS THROUGH THIS AFTERNOON * WINDS: 20 TO 30 MPH WITH GUSTS TO 45 MPH * LOCATIONS IMPACTED INCLUDE...GRANGEVILLE AND VICINITY...HIGHWAY 95 SLATE CREEK TO RIGGINS. PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
283 WWUS75 KMSO 201811 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 1211 PM MDT TUE MAR 20 2012 MTZ007-210200- /O.EXA.KMSO.WI.Y.0011.000000T0000Z-120321T0200Z/ BUTTE/BLACKFOOT REGION- 1211 PM MDT TUE MAR 20 2012 ...WIND ADVISORY IN EFFECT UNTIL 8 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT UNTIL 8 PM MDT THIS EVENING. * IMPACTS/TIMING: STRONG AND GUSTY SOUTH WINDS WILL PERSIST THROUGH THIS AFTERNOON CAUSING POTENTIALLY DANGEROUS CROSS WIND CONDITIONS AT TIMES. IN ADDITION...STRONG WIND GUSTS WILL BLOW RECENTLY FALLEN SNOW AROUND PRODUCING PERIODS OF REDUCED VISIBILITY WHICH IN LOCAL AREAS MAY BE LESS THAN ONE QUARTER MILE. SNOW BLOWING ACROSS PAVED ROADWAYS MAY ALSO MAKE THEM PARTICULARLY SLICK AND DIFFICULT TO NAVIGATE. * WINDS: 25 TO 35 MPH WITH GUSTS TO AROUND 45 MPH. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS...PARTICULARLY INTERSTATE 90 FROM GARRISON JUNCTION TO ANACONDA. 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. && $$ IDZ007-008-210200- /O.CON.KMSO.WI.Y.0011.000000T0000Z-120321T0200Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 1111 AM PDT TUE MAR 20 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING. * IMPACTS/TIMING: STRONG GUSTY SOUTH WINDS THROUGH THIS AFTERNOON * WINDS: 20 TO 30 MPH WITH GUSTS TO 45 MPH * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
023 WWUS75 KMSO 201829 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 1229 PM MDT TUE MAR 20 2012 MTZ007-210200- /O.UPG.KMSO.WI.Y.0011.000000T0000Z-120321T0200Z/ /O.NEW.KMSO.HW.W.0003.120320T1829Z-120321T0200Z/ BUTTE/BLACKFOOT REGION- 1229 PM MDT TUE MAR 20 2012 ...HIGH WIND WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 8 PM MDT THIS EVENING. THE WIND ADVISORY IS NO LONGER IN EFFECT. * IMPACTS/TIMING: VERY STRONG AND GUSTY WINDS WILL PERSIST THROUGH THIS AFTERNOON CAUSING POTENTIALLY DANGEROUS CROSS WIND CONDITIONS AND LOCAL DAMAGE. A POWER OUTAGE HAS RECENTLY BEEN REPORTED IN THE ANACONDA AREA. IN ADDITION...STRONG WIND GUSTS WILL BLOW RECENTLY FALLEN SNOW AROUND PRODUCING PERIODS OF REDUCED VISIBILITY WHICH IN LOCAL AREAS MAY BE LESS THAN ONE QUARTER MILE AND POTENTIALLY WHITE OUT CONDITIONS. SNOW BLOWING ACROSS PAVED ROADWAYS MAY ALSO MAKE THEM PARTICULARLY SLICK AND DIFFICULT TO NAVIGATE. * WINDS: 30 TO 45 MPH WITH GUSTS TO AROUND 55 MPH. * LOCATIONS IMPACTED INCLUDE...BUTTE...GEORGETOWN LAKE...HIGHWAY 12 GARRISON TO ELLISTON...MACDONALD PASS PRECAUTIONARY/PREPAREDNESS ACTIONS... A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS OF 50 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE. && $$ IDZ007-008-210200- /O.CON.KMSO.WI.Y.0011.000000T0000Z-120321T0200Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 1129 AM PDT TUE MAR 20 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING. * IMPACTS/TIMING: STRONG GUSTY SOUTH WINDS THROUGH THIS AFTERNOON * WINDS: 20 TO 30 MPH WITH GUSTS TO 45 MPH * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
808 WWUS75 KMSO 210135 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 735 PM MDT TUE MAR 20 2012 MTZ007-210245- /O.EXP.KMSO.HW.W.0003.000000T0000Z-120321T0200Z/ BUTTE/BLACKFOOT REGION- 735 PM MDT TUE MAR 20 2012 ...HIGH WIND WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING... THE HIGH WIND WARNING WILL EXPIRE AT 8 PM MDT THIS EVENING. $$ IDZ007-008-210245- /O.CAN.KMSO.WI.Y.0011.000000T0000Z-120321T0200Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 635 PM PDT TUE MAR 20 2012 ...WIND ADVISORY IS CANCELLED... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS CANCELLED THE WIND ADVISORY. $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 1:25 PM PDT | Winter Storm Warning | MSO | Clearwater, Idaho | 43 hr |
| Mar 20, 11:29 AM PDT | High Wind Warning | MSO | Deer Lodge, Granite, Powell, Silver Bow | 8 hr |
Nearby
Wind Advisories in Montana, 2012Wind Advisories in Idaho, 2012Every wind advisory in 2012
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.