Alert archive / Montana / High Wind Warnings in 2016
High Wind Warning 4, NWS Missoula, MT
NWS Missoula, MT issued this high wind warning at Dec 20, 2016, 2:45 AM MST for 4 counties in Montana. It took effect at Dec 20, 2016, 5:00 AM MST. It was in force for 13 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
- Dec 20, 2016, 2:45 AM MST (09:45 UTC)
- In effect from
- Dec 20, 2016, 5:00 AM MST
- Expired
- Dec 20, 2016, 6:00 PM MST
- In force
- 13 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 09:51 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 |
|---|---|---|---|
| Dec 20, 5:30 PM MST | NON-TSTM WND GST 60 | 2 N Deer Lodge, MT | . |
| Dec 20, 6:00 PM MST | NON-TSTM WND GST 55 | 4 Ssw Deer Lodge, MT | . |
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 00:00Z, 9.8 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
- 1403 m above ground
- 0-6 km bulk shear
- 104 kt
- 0-1 km storm-relative helicity
- 293 m²/s²
- 0-3 km storm-relative helicity
- 313 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
245 WWUS75 KMSO 200945 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 245 AM MST TUE DEC 20 2016 IDZ007-201045- /O.CAN.KMSO.HW.W.0003.000000T0000Z-161220T1800Z/ OROFINO/GRANGEVILLE REGION- 145 AM PST TUE DEC 20 2016 ...HIGH WIND WARNING IS REPLACED BY WINTER STORM WARNING FOR BLOWING AND DRIFTING SNOW WITH HIGH WINDS ... THE HIGH WIND WARNING HAS BEEN REPLACED WITH A WINTER STORM WARNING. HIGH WINDS ARE STILL EXPECTED, HOWEVER, WEBCAMS ARE ALREADY SHOWING BLOWING AND DRIFTING SNOW THIS MORNING WITH MORE SNOW INCOMING, SO IT HAS BEEN CHANGED TO A WINTER STORM WARNING. $$ MTZ007-210000- /O.NEW.KMSO.HW.W.0004.161220T1200Z-161221T0000Z/ BUTTE/BLACKFOOT REGION- 245 AM MST TUE DEC 20 2016 ...HIGH WIND WARNING IN EFFECT UNTIL 5 PM MST THIS AFTERNOON FOR... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. * IMPACTS/TIMING: STRONGEST WINDS WILL OCCUR THIS MORNING FROM 6 AM THROUGH NOON WITH CROSS WINDS ON INTERSTATE 90 CAUSING DIFFICULT DRIVING CONDITIONS FOR HIGH PROFILE VEHICLES FROM GARRISON JUNCTION TO ANACONDA. * WINDS: SOUTHWEST WINDS 40 MPH WITH WESTERLY WIND GUSTS TO 60 MPH. $$
2 follow-up statements
316 WWUS75 KMSO 201711 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 1011 AM MST TUE DEC 20 2016 MTZ007-210100- /O.EXT.KMSO.HW.W.0004.000000T0000Z-161221T0100Z/ BUTTE/BLACKFOOT REGION- 1011 AM MST TUE DEC 20 2016 ...HIGH WIND WARNING NOW IN EFFECT UNTIL 6 PM MST THIS EVENING FOR I-90 FROM ANACONDA TO GARRISON JUNCTION... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A HIGH WIND WARNING...WHICH IS IN EFFECT UNTIL 5 PM MST THIS AFTERNOON. * IMPACTS/TIMING: STRONG WINDS WILL OCCUR THIS AFTERNOON...WITH CROSS WINDS DEVELOPING ON INTERSTATE 90...CAUSING DIFFICULT DRIVING CONDITIONS FOR HIGH PROFILE VEHICLES FROM GARRISON JUNCTION TO ANACONDA. * WINDS: SOUTHWEST WINDS SHIFTING TO WEST THIS AFTERNOON AND 40 MPH WITH GUSTS TO 60 MPH. $$ MTZ005-210100- /O.NEW.KMSO.WI.Y.0012.161220T2100Z-161221T0100Z/ MISSOULA/BITTERROOT VALLEYS- 1011 AM MST TUE DEC 20 2016 ...WIND ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MST THIS EVENING FOR BITTERROOT VALLEY AND MISSOULA... THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A WIND ADVISORY...WHICH IS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MST THIS EVENING. * IMPACTS/TIMING: GUSTY WEST WINDS WILL DEVELOP MID-AFTERNOON FOR THE MISSOULA AND BITTERROOT VALLEYS. * WINDS: WEST 20 TO 35 MPH WITH HIGHER GUSTS. $$
758 WWUS75 KMSO 210052 NPWMSO URGENT - WEATHER MESSAGE NATIONAL WEATHER SERVICE MISSOULA MT 552 PM MST TUE DEC 20 2016 MTZ007-210200- /O.EXP.KMSO.HW.W.0004.000000T0000Z-161221T0100Z/ BUTTE/BLACKFOOT REGION- 552 PM MST TUE DEC 20 2016 ...HIGH WIND WARNING WILL EXPIRE AT 6 PM MST THIS EVENING FOR I-90 FROM ANACONDA TO GARRISON JUNCTION... WHILE GUSTY WINDS WILL CONTINUE FOR THE NEXT FEW HOURS, WINDS WILL DECREASE THROUGH THE EVENING. $$ MTZ005-210200- /O.EXP.KMSO.WI.Y.0012.000000T0000Z-161221T0100Z/ MISSOULA/BITTERROOT VALLEYS- 552 PM MST TUE DEC 20 2016 ...WIND ADVISORY WILL EXPIRE AT 6 PM MST THIS EVENING FOR BITTERROOT VALLEY AND MISSOULA... WINDS WILL CONTINUE TO DECREASE THROUGH THE EVENING. $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 20, 10:11 AM MST | Wind Advisory | MSO | Missoula, Ravalli | 8 hr |
Nearby
High Wind Warnings in Montana, 2016Every high wind warning in 2016
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.