Alert archive / Montana / Special Weather Statements in 2011
Special Weather Statement, NWS Missoula, MT
NWS Missoula, MT issued this special weather statement at Jul 13, 2011, 6:28 PM MDT for Flathead County, Montana. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 13, 2011, 6:28 PM MDT (00:28 UTC)
- Expired
- Jul 13, 2011, 7:15 PM MDT
- In force
- 47 min
- Issued by
- NWS Missoula, MT
County Flathead County, MT
The radar
The Missoula radar (KMSX), 114 km from the middle of the area, began a volume at 00:28 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 text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Missoula, MT wrote its last area forecast discussion before this special weather statement went out at Jul 13, 2:43 PM MDT, 3 hours 45 minutes earlier.
Area forecast discussion, Jul 13, 2:43 PM MDT, 3 hours 45 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MISSOULA MT 243 PM MDT WED JUL 13 2011 .DISCUSSION...LOW PRESSURE OFF THE NORTHWEST COAST CONTINUES TO SEND SHORT WAVES OF ENERGY THROUGH THE NORTHERN ROCKIES. THIS UNSTABLE ATMOSPHERE HAS RESULTED IN THE DEVELOPMENT OF NUMEROUS THUNDERSTORMS ACROSS MUCH OF THE SOUTHWEST MONTANA AND EAST CENTRAL IDAHO THIS AFTERNOON. THUNDERSTORM ACTIVITY IS EXPECTED THROUGH THE EVENING HOURS. HEAVY DOWNPOURS OF RAIN IN A SHORT PERIOD OF TIME ARE POSSIBLE WITH THUNDERSTORMS. THUS A FLASH FLOOD WATCH FOR HAS BEEN ISSUED FOR THESE AREAS...WITH THE AREAS OF GREATEST IMPACT BEING THOSE BURNED AREAS AND FLOOD PRONE BASINS INCLUDING NARROW HIGHWAY CORRIDORS IN STEEP TERRAIN. A SEVERE THUNDERSTORM WATCH HAS ALSO BEEN ISSUED THROUGH THIS EVENING AS HAIL UP TO AN INCH IN DIAMETER IS POSSIBLE WITH THESE STORMS. THE UPPER LEVEL LOW WILL SLOWLY MOVE NORTHEAST INTO ALBERTA CANADA FRIDAY. ISOLATED CONVECTION IS POSSIBLE OVER SOUTHWEST MONTANA ALSO. COOLER TEMPS ARE EXPECTED THURSDAY AND FRIDAY WITH HIGHS IN THE MID 70S TO LOWER 80S. SATURDAY AND SUNDAY...ANOTHER LOW PRESSURE SYSTEM WILL ENTER THE NORTHWEST COAST PROVIDING SOUTHWEST FLOW ALOFT AND ONCE AGAIN BRING PERIODIC SHORTWAVES OF ENERGY INTO THE NORTHERN ROCKIES. THE RESULT WILL BE A CONTINUED THREAT OF AFTERNOON THUNDERSTORMS ACROSS THE REGION. MONDAY AND TUESDAY...STRONG HIGH PRESSURE OVER THE CENTRAL U.S. WILL MOVE SLIGHTLY WESTWARD...ENOUGH TO INFLUENCE THE NORTHERN ROCKIES BY PUSHING THE UPPER LEVEL LOW FAR ENOUGH NORTH TO KEEP THE MAJORITY OF INSTABILITY AND CONVECTION IN CANADA. WARMER TEMPERATURES ARE ANTICIPATED WITH HIGHS HOVERING AROUND 90 DEGREES EXPECTED. && .AVIATION...WIDESPREAD SHOWERS AND THUNDERSTORMS WILL CONTINUE THROUGH LEMHI COUNTY AND SOUTHWEST MONTANA THIS EVENING...EVENTUALLY EXPANDING WESTWARD THROUGH THE BITTERROOT...MISSOULA AND FLATHEAD VALLEYS. A VERY MOIST ATMOSPHERE AND LIGHT DIRECTIONALLY UNIFORM WINDS THROUGH THE MID LEVELS WILL SUPPORT SLOW MOVING AND TRAINING STORMS THAT MAY PASS OVER THE AIRFIELDS SEVERAL TIMES THROUGH THE EVENING. STORMS AND ASSOCIATED CUMULONIMBUS WILL LINGER THROUGH AT LEAST 14/0400Z BEFORE DISSIPATING. SKIES WILL SLOWLY CLEAR WITH LINGERING SCATTERED CUMULUS OVERNIGHT AND LIGHT WINDS FOR THURSDAY MORNING INTO MIDDAY. && NOTE: FLOOD WATCHES...WARNINGS AND ADVISORIES WILL NOT BE LISTED BELOW. .MSO WATCHES/WARNINGS/ADVISORIES... MT...NONE. ID...NONE. && SHORT TERM...RPN LONG TERM....RPN AVIATION...NOLTE
In the hours before
Special weather statement, Jul 13, 3:54 PM MDT, 2 hours 34 minutes before
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</html>Special weather statement, Jul 13, 5:46 PM MDT, 42 minutes before
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</html>Special weather statement, Jul 13, 6:28 PM MDT, 0 minutes before
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</html>The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 7:15 PM MDT | Special Weather Statement | MSO | Flathead | 45 min |
| Jul 14, 6:17 AM MDT | Special Weather Statement | MSO | Silver Bow | 43 min |
| Jul 14, 7:25 AM MDT | Severe Thunderstorm Warning | MSO | Silver Bow | 50 min |
| Jul 14, 7:34 AM MDT | Areal Flood Advisory | MSO | Silver Bow | 87 min |
Nearby
Special Weather Statements in Montana, 2011Every special weather statement 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; radar from the NEXRAD Level II archive.