Alert archive / Minnesota / Flash Flood Warnings in 2001

Flash Flood Warning 24, NWS Grand Forks, ND

July 31, 2001Marshall County, Minnesota

NWS Grand Forks, ND issued this flash flood warning at Jul 31, 2001, 4:35 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 counties it named.

The facts

Issued
Jul 31, 2001, 4:35 PM CDT (21:35 UTC)
Expired
Jul 31, 2001, 10:30 PM CDT
In force
6 hr
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Marshall County, MN

The radar

The Fargo/Grand Forks radar (KMVX), 117 km from the middle of the area, began a volume at 21:35 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

International Fa, MN (KINL), launched 12:00Z, 9.6 hours before the alert went out and 227 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-pSkew-T log-p diagram, International Fa, MN at 12:00Z on 2001-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2851 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, International Fa, MN at 12:00Z on 2001-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
2851 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
485 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
179 m²/s²
Significant tornado parameter
0.0
Supercell composite
7.8

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KFGF 312143
FFWFGF
MNC089-010330-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
435 PM CDT TUE JUL 31 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  WESTERN MARSHALL COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 1030 PM CDT

* AT 430 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
THUNDERSTORMS WITH HEAVY RAIN WILL CONTINUE TO MOVE ACROSS WESTERN
MARSHALL COUNTY FOR THE NEXT SEVERAL HOURS.

* RADAR INDICATES THAT 1.00 INCH TO 2.00 INCHES OF RAIN HAS ALREADY
FALLEN ACROSS THE AREA. ADDITIONAL RAINFALL AMOUNTS OF 1.00 INCH TO
1.50 INCHES POSSIBLE THROUGH 1030 PM...ESPECIALLY IN THE
WARREN...ALVARADO...ARGYLE AND NEWFOLDEN AREAS.

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 482|5 9702 4818 9648 4849 9606 4854 9688


$$
RD

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 4:11 AM CDTSevere Thunderstorm WarningFGFNorman, Polk34 min
Jul 31, 4:11 AM CDTSevere Thunderstorm WarningFGFPennington, Red Lake34 min
Jul 31, 4:11 AM CDTSevere Thunderstorm WarningFGFMarshall34 min
Jul 31, 4:47 AM CDTSevere Thunderstorm WarningFGFPennington, Polk, Red Lake28 min
Jul 31, 4:47 AM CDTSevere Thunderstorm WarningFGFBeltrami, Kittson, Marshall, Roseau28 min
Jul 31, 4:47 AM CDTSevere Thunderstorm WarningFGFClearwater28 min
Jul 31, 5:37 AM CDTSevere Thunderstorm WarningFGFBeltrami, Lake of the Woods38 min
Jul 31, 11:21 AM CDTSevere Thunderstorm WarningFGFPolk39 min
Jul 31, 11:57 AM CDTSevere Thunderstorm WarningFGFPennington, Polk, Red Lake48 min
Jul 31, 12:11 PM CDTSevere Thunderstorm WarningFGFMarshall64 min
Jul 31, 12:43 PM CDTSevere Thunderstorm WarningFGFPennington32 min
Jul 31, 12:46 PM CDTSevere Thunderstorm WarningFGFBeltrami, Lake of the Woods59 min
Jul 31, 1:20 PM CDTSevere Thunderstorm WarningFGFPennington, Polk25 min
Jul 31, 1:35 PM CDTSevere Thunderstorm WarningFGFMarshall40 min
Jul 31, 1:44 PM CDTSevere Thunderstorm WarningFGFLake of the Woods31 min
Jul 31, 2:15 PM CDTSevere Thunderstorm WarningFGFBeltrami, Marshall30 min
Jul 31, 4:39 PM CDTFlash Flood WarningFGFPolk4 hr
Jul 31, 4:54 PM CDTSevere Thunderstorm WarningFGFPolk51 min
Jul 31, 5:16 PM CDTSevere Thunderstorm WarningFGFLake of the Woods, Roseau44 min
Jul 31, 5:39 PM CDTTornado WarningFGFBeltrami, Lake of the Woods36 min
Jul 31, 6:05 PM CDTFlash Flood WarningFGFBeltrami, Lake of the Woods, Marshall, Roseau6 hr
Jul 31, 6:13 PM CDTSevere Thunderstorm WarningFGFClay32 min
Jul 31, 6:15 PM CDTTornado WarningFGFLake of the Woods30 min
Jul 31, 6:23 PM CDTFlash Flood WarningFGFPennington, Polk, Red Lake6 hr
Jul 31, 6:24 PM CDTSevere Thunderstorm WarningFGFNorman36 min
Jul 31, 6:54 PM CDTSevere Thunderstorm WarningFGFPolk, Red Lake36 min
Jul 31, 6:58 PM CDTSevere Thunderstorm WarningFGFNorman32 min

Nearby

Flash Flood Warnings in Minnesota, 2001Every flash flood warning in 2001

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.