Alert archive / Minnesota / Flash Flood Warnings in 2002

Flash Flood Warning 44, NWS Grand Forks, ND

August 27, 2002Marshall County, Minnesota

NWS Grand Forks, ND issued this flash flood warning at Aug 27, 2002, 11:18 PM CDT for Marshall County, Minnesota. It was in force for 6 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: Aug 27, 2002, 11:18 PM CDT (04:18 UTC)
Expired: Aug 28, 2002, 5:15 AM CDT
In force: 6 hr
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

County Marshall County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 105 km from the middle of the area, began a volume at 04:18 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

International Fa, MN (KINL), launched 00:00Z, 4.3 hours before the alert went out and 256 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 581 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 960 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 77 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
WGUS53 KFGF 280418
FFWFAR
MNC089-281015-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1110 PM CDT TUE AUG 27 2002

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  MARSHALL COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 515 AM CDT.

* AT 1108 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED      
  THUNDERSTORMS WITH VERY HEAVY RAIN CONTINUE TO MOVE VERY SLOWLY 
  TO THE EAST ACROSS WESTERN MARSHALL COUNTY.

* LATEST DOPPLER RADAR RAINFALL ESTIMATES INDICATED THAT OVER TWO    
  INCHES OF RAIN HAS FALLEN DURING THE PAST HOUR IN THE CITIES OF    
  STEPHEN...ARGYLE AND BIG WOODS. ADDITIONAL RAINFALL AMOUNTS OF ONE 
  TO THREE INCHES ARE POSSIBLE IN THE NEXT FEW HOURS RESULTING IN    
  LOCAL STREET AND OVERLAND FLOODING. 

  MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT DRIVE YOUR    
  VEHICLE INTO WATER OF UNKNOWN DEPTH. ONE OR TWO FEET OF WATER WILL 
  FLOAT MOST CARS DOWNSTREAM.

LAT...LON 4852 9709 4820 9709 4820 9627 4853 9628


BERG

NNNN

The office that day

Everything else NWS Grand Forks, ND issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 27, 7:47 PM CDT	Severe Thunderstorm Warning	FGF	Marshall	58 min
Aug 28, 1:15 PM CDT	Severe Thunderstorm Warning	FGF	Clearwater	45 min
Aug 28, 1:44 PM CDT	Severe Thunderstorm Warning	FGF	Becker	46 min
Aug 28, 2:00 PM CDT	Severe Thunderstorm Warning	FGF	Clearwater, Hubbard	45 min
Aug 28, 4:30 PM CDT	Severe Thunderstorm Warning	FGF	Wilkin	45 min
Aug 28, 4:44 PM CDT	Severe Thunderstorm Warning	FGF	Clay	46 min
Aug 28, 5:01 PM CDT	Tornado Warning	FGF	Wilkin	44 min
Aug 28, 5:09 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Mahnomen	51 min
Aug 28, 5:27 PM CDT	Severe Thunderstorm Warning	FGF	Otter Tail	48 min
Aug 28, 5:29 PM CDT	Severe Thunderstorm Warning	FGF	Clay	46 min
Aug 28, 5:47 PM CDT	Tornado Warning	FGF	Wilkin	43 min
Aug 28, 6:00 PM CDT	Severe Thunderstorm Warning	FGF	Becker, Mahnomen	60 min
Aug 28, 6:14 PM CDT	Flash Flood Warning	FGF	Wilkin	6 hr
Aug 28, 6:16 PM CDT	Flash Flood Warning	FGF	Wilkin	6 hr
Aug 28, 6:16 PM CDT	Severe Thunderstorm Warning	FGF	Clay	59 min
Aug 28, 6:57 PM CDT	Flash Flood Warning	FGF	Becker, Clay, Mahnomen	6 hr

Nearby

Flash Flood Warnings in Minnesota, 2002 Every flash flood warning in 2002

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.