Alert archive / Montana / Flash Flood Warnings in 2012
Flash Flood Warning 3, NWS Missoula, MT
NWS Missoula, MT issued this flash flood warning at Jul 15, 2012, 2:28 PM MDT for Lake County, Montana. It was in force for 53 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, 2:28 PM MDT (20:28 UTC)
- Expired
- Jul 15, 2012, 3:21 PM MDT
- In force
- 53 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 20:32 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.
The nearest sounding before it
Spokane, WA (KOTX), launched 12:00Z, 8.5 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.
257 WGUS55 KMSO 152028 FFWMSO MTC047-152130- /O.NEW.KMSO.FF.W.0003.120715T2028Z-120715T2130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MISSOULA MT 228 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 330 PM MDT. * AT 218 PM MDT...DOPPLER RADAR INDICATED VERY HEAVY RAIN OVER THE WARNED AREA. * LOCATIONS IMPACTED INCLUDE...PABLO. * 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. 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. && LAT...LON 4757 11427 4775 11400 4762 11397 4749 11423 $$
1 follow-up statement
133 WGUS75 KMSO 152121 FFSMSO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 321 PM MDT SUN JUL 15 2012 MTC047-152130- /O.CAN.KMSO.FF.W.0003.000000T0000Z-120715T2130Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LAKE MT- 321 PM MDT SUN JUL 15 2012 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR CENTRAL LAKE COUNTY... WHILE THUNDERSTORMS AND HEAVY RAINFALL HAS ENDED...FLOOD ISSUES MAY CONTINUE THROUGH THIS EVENING AS A RESULT OF THE EXCESSIVE RAINFALL. LAT...LON 4757 11427 4775 11400 4762 11397 4749 11423 $$
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, 12:33 PM MDT | Flash Flood Warning | MSO | Lake | 117 min |
| 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, 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.