Alert archive / North Dakota / Flash Flood Warnings in 2009
Flash Flood Warning 5, NWS Grand Forks, ND
NWS Grand Forks, ND issued this flash flood warning at Mar 27, 2009, 8:45 AM CDT for Cass County, North Dakota. 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
- Mar 27, 2009, 8:45 AM CDT (13:45 UTC)
- Expired
- Mar 27, 2009, 4:00 PM CDT
- In force
- 7 hr
- Issued by
- NWS Grand Forks, ND
- Area
- Storm-based polygon
- Flood severity
- Major
County Cass County, ND
The radar
The Fargo/Grand Forks radar (KMVX), 81 km from the middle of the area, began a volume at 13:44 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.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this flash flood warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 1.8 hours before the alert went out and 252 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
- 744 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- -58 m²/s²
- 0-3 km storm-relative helicity
- -32 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS53 KFGF 271346 FFWFGF NDC017-271600- /O.NEW.KFGF.FF.W.0005.090327T1346Z-090327T1600Z/ /00000.3.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 845 AM CDT FRI MAR 27 2009 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A * FLASH FLOOD WARNING FOR... EXTREME EAST CENTRAL CASS COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 1100 AM CDT * AT 830 AM CDT...THE FARGO POLICE DEPARTMENT IS ISSUING A MANDATORY EVACUATION OF ALL RESIDENCES EAST OF 4TH STREET SOUTH BETWEEN SOUTH RIVER ROAD AND LINDENWOOD DRIVE. THERE IS A FLOOD PROTECTION BREECH AT LINDEN AVENUE...EAST OF 4TH STREET SOUTH. DUE TO THE IMMEDIATE THREAT OF RISING WATER...THE CITY OF FARGO IS ORDERING A MANDATORY EVACUATION. * RESIDENTS OF THIS AREA OF THE CITY SHOULD IMMEDIATELY PROCEED WEST OF THE NEIGHBORHOOD. RESIDENTS WHO DO NOT HAVE AN ALTERNATIVE PLACE TO STAY MAY SEEK EMERGENCY SHELTER AT FARGO SOUTH CAMPUS II...AGASSIZ. ADDITIONAL SHELTERS WILL BE DESIGNATED AS NEEDED. * RESIDENTS SHOULD STAY TUNED TO LOCAL RADIO BROADCASTS FOR ADDITIONAL EVACUATION AND TEMPORARY SHELTER INFORMATION. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN THE DANGERS OF FLASH FLOODING ARE HARD TO RECOGNIZE. IF YOU LIVE NEAR THE LOCATION OF THE DIKE FAILURE MOVE TO HIGHER GROUND. LAT...LON 4691 9679 4685 9680 4685 9686 4691 9686 $$ HOPKINS
3 follow-up statements
000 WGUS73 KFGF 271413 FFSFGF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 909 AM CDT FRI MAR 27 2009 NDC017-271600- /O.CON.KFGF.FF.W.0005.000000T0000Z-090327T1600Z/ /00000.3.DM.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CASS ND- 909 AM CDT FRI MAR 27 2009 ...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1100 AM CDT FOR EXTREME EAST CENTRAL CASS COUNTY IN SOUTHEAST NORTH DAKOTA... * FLASH FLOOD WARNING FOR... EXTREME EAST CENTRAL CASS COUNTY IN SOUTHEAST NORTH DAKOTA... * UNTIL 1100 AM CDT * AT 830 AM CDT...THE FARGO POLICE DEPARTMENT IS ISSUING A MANDATORY EVACUATION OF ALL RESIDENCES EAST OF 4TH STREET SOUTH BETWEEN SOUTH RIVER ROAD AND LINDENWOOD DRIVE. THERE IS SEEPAGE IN THE FLOOD PROTECTION LEVEE AT LINDEN AVENUE...EAST OF 4TH STREET SOUTH. DUE TO THE IMMEDIATE THREAT OF RISING WATER...THE CITY OF FARGO IS ORDERING A MANDATORY EVACUATION. * RESIDENTS OF THIS AREA OF THE CITY SHOULD IMMEDIATELY PROCEED WEST OF THE NEIGHBORHOOD. RESIDENTS WHO DO NOT HAVE AN ALTERNATIVE PLACE TO STAY MAY SEEK EMERGENCY SHELTER AT FARGO SOUTH CAMPUS II...AGASSIZ. ADDITIONAL SHELTERS WILL BE DESIGNATED AS NEEDED. * RESIDENTS SHOULD STAY TUNED TO LOCAL RADIO BROADCASTS FOR ADDITIONAL EVACUATION AND TEMPORARY SHELTER INFORMATION. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN THE DANGERS OF FLASH FLOODING ARE HARD TO RECOGNIZE. IF YOU LIVE NEAR THE LOCATION OF THE DIKE FAILURE MOVE TO HIGHER GROUND. LAT...LON 4691 9679 4685 9680 4685 9686 4691 9686 $$ HOPKINS
000 WGUS53 KFGF 271556 FFWFGF NDC017-272100- /O.EXT.KFGF.FF.W.0005.000000T0000Z-090327T2100Z/ /00000.3.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 1055 AM CDT FRI MAR 27 2009 THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS EXTENDED THE * FLASH FLOOD WARNING FOR... EXTREME EAST CENTRAL CASS COUNTY IN SOUTHEAST NORTH DAKOTA... THIS INCLUDES THE CITY OF FARGO... * UNTIL 400 PM CDT * AT 830 AM CDT...THE FARGO POLICE DEPARTMENT ISSUED A MANDATORY EVACUATION OF ALL RESIDENCES EAST OF 4TH STREET SOUTH BETWEEN SOUTH RIVER ROAD AND LINDENWOOD DRIVE. THERE IS SEEPAGE IN THE FLOOD PROTECTION LEVEE AT LINDEN AVENUE...EAST OF 4TH STREET SOUTH. DUE TO THE IMMEDIATE THREAT OF RISING WATER...THE CITY OF FARGO IS ORDERING A MANDATORY EVACUATION. * RESIDENTS OF THIS AREA OF THE CITY SHOULD IMMEDIATELY PROCEED WEST OF THE NEIGHBORHOOD. RESIDENTS WHO DO NOT HAVE AN ALTERNATIVE PLACE TO STAY MAY SEEK EMERGENCY SHELTER AT FARGO SOUTH CAMPUS II...AGASSIZ. ADDITIONAL SHELTERS WILL BE DESIGNATED AS NEEDED. * RESIDENTS SHOULD STAY TUNED TO LOCAL RADIO BROADCASTS FOR ADDITIONAL EVACUATION AND TEMPORARY SHELTER INFORMATION. LAT...LON 4691 9679 4685 9680 4685 9686 4691 9686 $$ EWENS
000 WGUS73 KFGF 272052 FFSFGF FLASH FLOOD STATEMENT NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND 350 PM CDT FRI MAR 27 2009 NDC017-272100- /O.CON.KFGF.FF.W.0005.000000T0000Z-090327T2100Z/ /00000.3.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/ CASS ND- 350 PM CDT FRI MAR 27 2009 ...A FLASH FLOOD WARNING EXPIRES AT 400 PM CDT FOR EXTREME EAST CENTRAL CASS COUNTY IN SOUTHEAST NORTH DAKOTA... AT 344 PM CDT...EMERGENCY MANAGEMENT OFFICIALS REPORT THE AREA THAT WAS UNDER THE FLASH FLOOD WARNINGS HAS BEEN EVACUATED. ENGINEERS ARE PERFORMING MITIGATION EFFORTS TO THE AFFECTED LEVEE...REDUCING THE DANGER OF AN IMMEDIATE FAILURE. THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE AT 400 PM. RESIDENTS OF THE LOWER RED RIVER VALLEY...ESPECIALLY THE FARGO ...MOORHEAD...WEST FARGO AND AREAS IMMEDIATELY ADJACENT TO THE RED RIVER NEED TO REMAIN VIGILANT TO THE THREAT FOR FLASH FLOODING. PAY CLOSE ATTENTION TO LOCAL EMERGENCY MANAGEMENT AND LAW ENFORCEMENT OFFICIALS FOR EVACUATION UPDATES. LAT...LON 4691 9679 4685 9680 4685 9686 4691 9686 $$ EWENS
What forecasters said that day
The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Grand Forks, ND wrote its last area forecast discussion before this flash flood warning went out at Mar 27, 5:08 AM CDT, 3 hours 37 minutes earlier.
Area forecast discussion, Mar 27, 5:08 AM CDT, 3 hours 37 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE GRAND FORKS ND 508 AM CDT FRI MAR 27 2009 .DISCUSSION... MAIN FORECAST CHALLENGES ARE PRECIPITATION AND TEMPERATURES. WHEN LOOKING AT THE LATEST SURFACE ANALYSIS...THE AREA IS BETWEEN WEATHER SYSTEMS...WITH LOW PRESSURE TO THE E AND HIGH PRESSURE TO THE NW. WHEN COMPARING THE MODELS...THE MODELS REMAIN IN PRETTY GOOD AGREEMENT... SO ENDED UP USING A MODEL BLEND FOR THE FORECAST. CONTINUED USING THE GFS/ADJMAVBC FOR THE TEMPS AND BLENDED LEANED TOWARDS THE ECMWF FOR POPS. HIGH PRESSURE WILL BUILD INTO THE AREA TODAY...ALLOWING THE FLURRIES TO END AND THE WINDS TO DIMINISH. THE HIGH REMAINS OVER THE N PLAINS INTO SUN...SO KEPT THE FORECAST DRY WITH DAY TIME HIGH TEMPERATURES SLOWLY MODERATING TOWARDS THE FREEZING BY SUN. ON SUN NIGHT...THE SURFACE HIGH STARTS TO SHIFT E AS AN AREA OF LOW PRESSURE DEVELOPS IN THE ROCKIES. THE LOW MOVES OUT INTO THE CENTRAL PLAINS ON SUN NIGHT...BRINGING THE NEXT CHANCE FOR -SN TO THE AREA FOR MON AND TUE. && .AVIATION... MVFR/IFR CIGS AND VSBYS WILL SLOWLY IMPROVE TO VFR THIS MORNING. NW WINDS 10 TO 15 KTS WILL REMAIN NW THROUGH MUCH OF THE DAY AND DIMINISH TO LIGHT AS THE HIGH PRESSURE RIDGE BUILDS IN. && .FGF WATCHES/WARNINGS/ADVISORIES... ND...NONE. MN...NONE. && NG
Hazardous weather outlook, Mar 27, 6:58 AM CDT, 1 hour 47 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE GRAND FORKS ND 658 AM CDT FRI MAR 27 2009 MNZ001>009-013>017-022>024-027>032-040-NDZ006>008-014>016-024- 026>030-038-039-049-052>054-281200- WEST POLK-NORMAN-CLAY-KITTSON-ROSEAU-LAKE OF THE WOODS- WEST MARSHALL-EAST MARSHALL-NORTH BELTRAMI-PENNINGTON-RED LAKE- EAST POLK-NORTH CLEARWATER-SOUTH BELTRAMI-MAHNOMEN- SOUTH CLEARWATER-HUBBARD-WEST BECKER-EAST BECKER-WILKIN- WEST OTTER TAIL-EAST OTTER TAIL-WADENA-GRANT-TOWNER-CAVALIER- PEMBINA-BENSON-RAMSEY-EASTERN WALSH COUNTY-EDDY-NELSON- GRAND FORKS-GRIGGS-STEELE-TRAILL-BARNES-CASS-RANSOM-SARGENT- RICHLAND-WESTERN WALSH COUNTY- 658 AM CDT FRI MAR 27 2009 ...RIVER AND AERIAL FLOODING CONTINUE IN EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA... THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EASTERN NORTH DAKOTA...WEST CENTRAL AND NORTHWEST MINNESOTA. .DAY ONE...TODAY AND TONIGHT OVERLAND AND RIVER FLOODING REMAIN A SIGNIFICANT THREAT. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THE NEXT CHANCE FOR SNOW ACROSS PARTS OF EASTERN NORTH DAKOTA...NORTHWEST AND WEST CENTRAL MINNESOTA IS ON MONDAY AND TUESDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. NG
The office that day
Everything else NWS Grand Forks, ND issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 27, 2:33 AM CDT | Flash Flood Warning | FGF | Cass | 6 hr |
| Mar 27, 8:28 AM CDT | Flash Flood Warning | FGF | Eddy, Griggs, Nelson | 26 min |
| Mar 27, 1:54 PM CDT | Flash Flood Warning | FGF | Ransom | 7 hr |
Nearby
Flash Flood Warnings in North Dakota, 2009Every flash flood warning in 2009
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.