Alert archive / Montana / Flash Flood Warnings in 2012
Flash Flood Warning 2, NWS Missoula, MT
NWS Missoula, MT issued this flash flood warning at Jul 15, 2012, 12:33 PM MDT for Lake County, Montana. It was in force for 117 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 15, 2012, 12:33 PM MDT (18:33 UTC)
- Expired
- Jul 15, 2012, 2:30 PM MDT
- In force
- 117 min
- Issued by
- NWS Missoula, MT
- Area
- Storm-based polygon
- Flood severity
- None
County Lake County, MT
The radar
The Missoula radar (KMSX), 63 km from the middle of the area, began a volume at 18:35 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, 6.6 hours before the alert went out and 169 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
- 305 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 1372 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- -12 m²/s²
- 0-3 km storm-relative helicity
- -2 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
638 WGUS55 KMSO 151833 FFWMSO MTC047-152030- /O.NEW.KMSO.FF.W.0002.120715T1833Z-120715T2030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MISSOULA MT 1233 PM MDT SUN JUL 15 2012 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A * FLASH FLOOD WARNING FOR... PABLO IN CENTRAL LAKE COUNTY IN NORTHWEST MONTANA... * UNTIL 230 PM MDT. * AT 1230 PM MDT...DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER THE WARNED AREA. * LOCATIONS IMPACTED INCLUDE...PABLO. PRECAUTIONARY/PREPAREDNESS ACTIONS... A FLASH FLOOD WARNING MEANS THAT FLOODING...MUD AND DEBRIS FLOWS ARE IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. MOVE TO HIGHER GROUND. && LAT...LON 4757 11427 4775 11400 4762 11397 4749 11423 $$
3 follow-up statements
630 WGUS75 KMSO 151936 FFSMSO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 136 PM MDT SUN JUL 15 2012 MTC047-152030- /O.CON.KMSO.FF.W.0002.000000T0000Z-120715T2030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LAKE MT- 136 PM MDT SUN JUL 15 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR CENTRAL LAKE COUNTY... AT 130 PM MDT...WEATHER SPOTTERS REPORTED A SERIES OF STORMS THAT HAVE BEEN PRODUCING VERY HEAVY RAIN OVER THE WARNED AREA. LAW ENFORCEMENT HAVE ALSO REPORTED FLOODING IN THE WARNED AREA...INCLUDING ROADWAYS BEING COVERED BY WATER AND ROCK WASHOUTS OVER ROADWAYS AS WELL. THESE THUNDERSTORMS WITH EXCESSIVE RAIN WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. LAT...LON 4757 11427 4775 11400 4762 11397 4749 11423 $$
950 WGUS75 KMSO 152026 FFSMSO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 226 PM MDT SUN JUL 15 2012 MTC047-152030- /O.CON.KMSO.FF.W.0002.000000T0000Z-120715T2030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LAKE MT- 226 PM MDT SUN JUL 15 2012 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 230 PM MDT FOR CENTRAL LAKE COUNTY... AT 218 PM MDT...WEATHER SPOTTERS REPORTED A SERIES OF STORMS THAT HAVE BEEN PRODUCING VERY HEAVY RAIN OVER THE WARNED AREA. LAW ENFORCEMENT HAVE ALSO REPORTED FLOODING IN THE WARNED AREA...INCLUDING ROADWAYS BEING COVERED BY WATER AND ROCK WASHOUTS OVER ROADWAYS AS WELL. THIS THUNDERSTORM WITH EXCESSIVE RAIN WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE INDICATED COUNTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW LYING AREAS ARE SUBJECT TO FLOODING. && LAT...LON 4757 11427 4775 11400 4762 11397 4749 11423 $$
083 WGUS75 KMSO 152029 FFSMSO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 229 PM MDT SUN JUL 15 2012 MTC047-152040- /O.EXP.KMSO.FF.W.0002.000000T0000Z-120715T2030Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LAKE MT- 229 PM MDT SUN JUL 15 2012 ...THE FLASH FLOOD WARNING HAS EXPIRED FOR CENTRAL LAKE COUNTY... LAT...LON 4757 11427 4775 11400 4762 11397 4749 11423 $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 7:28 PM MDT | Severe Thunderstorm Warning | MSO | Mineral | 32 min |
| Jul 14, 8:01 PM MDT | Severe Thunderstorm Warning | MSO | Mineral, Missoula | 11 min |
| Jul 14, 8:49 PM MDT | Special Weather Statement | MSO | Missoula | 41 min |
| Jul 15, 12:09 PM MDT | Areal Flood Advisory | MSO | Lake, Missoula | 3 hr |
| Jul 15, 12:35 PM MDT | Special Weather Statement | MSO | Lake | 25 min |
| Jul 15, 12:52 PM MDT | Areal Flood Advisory | MSO | Granite | 113 min |
| Jul 15, 1:49 PM MDT | Areal Flood Warning | MSO | Lake, Missoula, Sanders | 4 hr |
| Jul 15, 2:28 PM MDT | Flash Flood Warning | MSO | Lake | 53 min |
| Jul 15, 3:01 PM MDT | Special Weather Statement | MSO | Missoula | 29 min |
Nearby
Flash Flood Warnings in Montana, 2012Every flash flood 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.