Alert archive / Montana / High Wind Warnings in 2012
High Wind Warning 3, NWS Missoula, MT
NWS Missoula, MT issued this high wind warning at Mar 20, 2012, 12:29 PM MDT for 4 counties in Montana. It was in force for 8 hr. 2 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
- Mar 20, 2012, 12:29 PM MDT (18:29 UTC)
- Expired
- Mar 20, 2012, 8:00 PM MDT
- In force
- 8 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 18:32 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 |
|---|---|---|---|
| Mar 20, 12:29 PM MDT | NON-TSTM WND GST 0 | Anaconda, MT | ESTIMATED 50 MPH WINDS IN ANACONDA. STREET LIGHTS OR STOP LIGHTS ARE OUT WITH VISIBILITY LESS THAN 1/4 MILE IN SOME AREAS. |
| Mar 20, 12:40 PM MDT | NON-TSTM WND GST 52 | 1 S Deer Lodge, MT | SUSTAINED WIND BETWEEN 35-40 MPH. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Great_falls, MT (KTFX), launched 12:00Z, 6.5 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
- 1407 m above ground
- 0-6 km bulk shear
- 65 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 200 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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 THE WIND ADVISORY IS NO LONGER IN EFFECT.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. && $$ IDZ007-008-210200- /O.CON.KMSO.WI.Y.0011.000000T0000Z-120321T0200Z/ OROFINO/GRANGEVILLE REGION-LOWER HELLS CANYON/SALMON RIVER REGION- 1129 AM PDT TUE MAR 20 2012 ...WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING... A WIND ADVISORY REMAINS IN EFFECT UNTIL 7 PM PDT THIS EVENING. * IMPACTS/TIMING: STRONG GUSTY SOUTH WINDS THROUGH THIS AFTERNOON * WINDS: 20 TO 30 MPH WITH GUSTS TO 45 MPH * LOCATIONS IMPACTED INCLUDE...CAMAS PRAIRIE...GRANGEVILLE AND VICINITY...GREER GRADE...HIGHWAY 95 SLATE CREEK TO RIGGINS... WHITE BIRD GRADE PRECAUTIONARY/PREPAREDNESS ACTIONS... A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH PROFILE VEHICLES. USE EXTRA CAUTION. && $$
1 follow-up statement
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, 8:41 AM MDT | Wind Advisory | MSO | Deer Lodge, Granite, Powell, Silver Bow | 11 hr |
| Mar 20, 2:25 PM MDT | Winter Storm Warning | MSO | Flathead, Granite, Lake, Lincoln, Mineral, Missoula and 2 more | 43 hr |
Nearby
High Wind Warnings in Montana, 2012Every high wind warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.