Alert archive / Montana / Flash Flood Warnings in 2011
Flash Flood Warning 1, NWS Missoula, MT
NWS Missoula, MT issued this flash flood warning at Jan 17, 2011, 8:10 AM MST for Lincoln County, Montana. It was in force for 7 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jan 17, 2011, 8:10 AM MST (15:10 UTC)
- Expired
- Jan 17, 2011, 2:51 PM MST
- In force
- 7 hr
- Issued by
- NWS Missoula, MT
- Area
- Storm-based polygon
- Flood severity
- None
County Lincoln County, MT
The radar
The Spokane radar (KOTX), 173 km from the middle of the area, began a volume at 15:11 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, 3.2 hours before the alert went out and 99 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
- 840 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 272 m²/s²
- 0-3 km storm-relative helicity
- 251 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
340 WGUS55 KMSO 171510 FFWMSO MTC053-172100- /O.NEW.KMSO.FF.W.0001.110117T1510Z-110117T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MISSOULA MT 810 AM MST MON JAN 17 2011 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS ISSUED A * FLASH FLOOD WARNING FOR... CENTRAL LINCOLN COUNTY IN NORTHWEST MONTANA INCLUDING THE TOWN OF LIBBY... * UNTIL 200 PM MST. * AT 748 AM MST...LAW ENFORCEMENT OFFICIALS REPORTED FLASH FLOODING OVER THE FLOWER CREEK DRAINAGE DUE TO ICE JAMMING OVERTAKING THE FLOWER CREEK DAM. SOME RESIDENTIAL AREAS HAVE BEEN IMPACTED...AS WELL AS THE BALSAM BRIDGE OVER FLOWER CREEK. LOCAL LAW ENFORCEMENT HAVE ENACTED VOLUNTARY EVACUATIONS FOR PERSONS ALONG FLOWER CREEK AND SOUTH NEVADA AVENUE INTO THE TOWN OF LIBBY. SHELTERS ARE BEING OPENED IN LIBBY. FOR MORE INFORMATION ON EVACUATIONS AND ANY OTHER QUESTIONS CALL 293-6295 OR TUNE YOUR RADIO DIAL TO 530 AM. * LOCATIONS IMPACTED INCLUDE...LIBBY. 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 4839 11551 4834 11557 4840 11562 4843 11557 $$
3 follow-up statements
159 WGUS75 KMSO 171532 CCA FFSMSO FLASH FLOOD STATEMENT...CORRECTED NATIONAL WEATHER SERVICE MISSOULA MT 832 AM MST MON JAN 17 2011 MTC053-172100- /O.CON.KMSO.FF.W.0001.000000T0000Z-110117T2100Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LINCOLN MT- 832 AM MST MON JAN 17 2011 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 200 PM MST FOR CENTRAL LINCOLN COUNTY... AT 748 AM MST...LAW ENFORCEMENT OFFICIALS REPORTED FLASH FLOODING ACROSS THE FLOWER CREEK DRAINAGE DUE TO ICE JAM BREAKING ON FLOWER CREEK. SOME RESIDENTIAL AREAS HAVE BEEN IMPACTED...AS WELL AS THE BALSAM BRIDGE OVER FLOWER CREEK. LOCAL LAW ENFORCEMENT HAVE ENACTED VOLUNTARY EVACUATIONS FOR PERSONS ALONG FLOWER CREEK AND SOUTH NEVADA AVENUE INTO THE TOWN OF LIBBY. SHELTERS ARE BEING OPENED IN LIBBY. FOR MORE INFORMATION ON EVACUATIONS AND ANY OTHER QUESTIONS CALL 293-6295 OR TUNE YOUR RADIO DIAL TO 530 AM. THESE FLOODING ISSUES ARE NOT RELATED TO THE FLOWER CREEK DAM...RATHER ICE JAMS ON FLOWER CREEK BELOW THE DAM. AGAIN...THERE ARE NO CURRENT ISSUES WITH RESPECT TO FLOWER CREEK DAM. LAT...LON 4839 11551 4834 11557 4840 11562 4843 11557 $$
149 WGUS55 KMSO 172034 FFWMSO MTC053-180300- /O.EXT.KMSO.FF.W.0001.000000T0000Z-110118T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE MISSOULA MT 134 PM MST MON JAN 17 2011 THE NATIONAL WEATHER SERVICE IN MISSOULA HAS EXTENDED THE * FLASH FLOOD WARNING FOR... FLOWER CREEK IN THE TOWN OF LIBBY IN CENTRAL LINCOLN COUNTY IN NORTHWEST MONTANA... * UNTIL FURTHER NOTICE. * LAW ENFORCEMENT OFFICIALS CONTINUE TO REPORT WATER LEVELS RUNNING VERY HIGH ON FLOWER CREEK DUE TO ICE JAM BREAKS THAT OCCURRED EARLIER TODAY. EMERGENCY RESPONSE CREWS HAVE MADE PROGRESS IN SANDBAGGING AND IN DIVERTING WATER FROM CITY STREETS BACK INTO THE FLOWER CREEK CHANNEL...HOWEVER...FLOWER CREEK FLOWS ARE STILL AT DANGEROUS LEVELS AND RESIDENTS IN THE AREA SHOULD REMAIN ALERT TO CHANGING CONDITIONS ON FLOWER CREEK. * LOCATIONS IMPACTED INCLUDE...LIBBY. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 4839 11551 4834 11557 4840 11562 4843 11557 $$
880 WGUS75 KMSO 172151 FFSMSO FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE MISSOULA MT 251 PM MST MON JAN 17 2011 MTC053-172154- /O.CAN.KMSO.FF.W.0001.000000T0000Z-110118T0300Z/ /00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ LINCOLN MT- 251 PM MST MON JAN 17 2011 ...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR FLOWER CREEK IN THE TOWN OF LIBBY IN CENTRAL LINCOLN COUNTY... LAW ENFORCEMENT OFFICIALS REPORT FLOWER CREEK IS NO LONGER FLASH FLOODING FROM THE ICE JAM BREAK UP THAT OCCURRED EARLY MONDAY MORNING. RESIDENTS IN LINCOLN COUNTY SHOULD STILL BE ALERT TO HIGH FLOWS ON VARIOUS CREEKS THROUGHOUT THE COUNTY THAT MAY EXPERIENCE ICE JAM BREAK UPS. LAT...LON 4839 11551 4834 11557 4840 11562 4843 11557 $$
The office that day
Everything else NWS Missoula, MT issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 9:17 AM MST | Areal Flood Advisory | MSO | Lincoln, Sanders | 24 hr |
Nearby
Flash Flood Warnings in Montana, 2011Every flash flood warning 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.