Alert archive / Minnesota / Flash Flood Warnings in 2001

Flash Flood Warning 18, NWS Grand Forks, ND

July 19, 2001Marshall County, Polk County, Minnesota; Grand Forks County, Traill County, North Dakota

NWS Grand Forks, ND issued this flash flood warning at Jul 19, 2001, 12:27 AM CDT for Marshall County, Polk County, Minnesota; Grand Forks County, Traill County, North Dakota. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued
Jul 19, 2001, 12:27 AM CDT (05:27 UTC)
Expired
Jul 19, 2001, 2:30 AM CDT
In force
2 hr
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Marshall County, MN, Polk County, MN, Grand Forks County, ND, Traill County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 52 km from the middle of the area, began a volume at 05:27 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, 5.5 hours before the alert went out and 283 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 00:00Z on 2001-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2275 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 00:00Z on 2001-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 68 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
2275 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
1506 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
68 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.6
Supercell composite
9.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KFGF 190529
FFWFGF
MNC089-119-NDC035-097-190730-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
1227 AM CDT THU JUL 19 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  EASTERN GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA...
  EXTREME SOUTHWESTERN MARSHALL COUNTY IN NORTHWEST MINNESOTA...
  WESTERN POLK COUNTY IN NORTHWEST MINNESOTA AND
  NORTHEASTERN TRAILL COUNTY IN SOUTHEAST NORTH DAKOTA.

* UNTIL 230 AM CDT

* AT 1222 AM CDT...LOCAL LAW ENFORCEMENT OFFICIALS REPORTED LOCAL
  STREET FLOODING WAS DEVELOPING IN THE GREATER GRAND FORKS AREA.
  DOPPLER RADAR INDICATED SLOW  MOVING THUNDERSTORMS WITH VERY HEAVY
  RAIN IN EASTERN GRAND FORKS COUNTY...MOVEMENT WAS TO THE EAST AT
  10 MPH.

* BYGLAND...GRAND FORKS...EAST GRAND FORKS AND MANVEL WILL BE
  AFFECTED BY THE HEAVY RAIN. RAINFALL AMOUNTS OF 1.5 TO 2.5 INCHES
  OF RAIN MAY FALL IN THE WARNING AREA. THIS WOULD CREATE SERIOUS
  FLOODING IN THE WARNING AREA.

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

LAT...LON 4817 9737 4761 9729 4760 9651 4816 9651 &

$$
EWENS
NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 18, 7:04 PM CDTSevere Thunderstorm WarningFGFKittson41 min
Jul 18, 7:08 PM CDTFlash Flood WarningFGFKittson3 hr
Jul 18, 7:23 PM CDTSevere Thunderstorm WarningFGFLake of the Woods52 min
Jul 18, 7:36 PM CDTTornado WarningFGFLake of the Woods39 min
Jul 18, 7:45 PM CDTSevere Thunderstorm WarningFGFKittson45 min
Jul 18, 7:54 PM CDTSevere Thunderstorm WarningFGFRoseau66 min
Jul 18, 8:09 PM CDTFlash Flood WarningFGFLake of the Woods, Roseau2 hr
Jul 18, 8:44 PM CDTTornado WarningFGFMarshall46 min
Jul 18, 8:50 PM CDTSevere Thunderstorm WarningFGFBeltrami, Lake of the Woods55 min
Jul 18, 9:01 PM CDTSevere Thunderstorm WarningFGFRoseau29 min
Jul 18, 9:43 PM CDTSevere Thunderstorm WarningFGFLake of the Woods47 min
Jul 18, 9:51 PM CDTSevere Thunderstorm WarningFGFPolk39 min
Jul 18, 10:00 PM CDTSevere Thunderstorm WarningFGFBeltrami45 min
Jul 18, 10:14 PM CDTFlash Flood WarningFGFLake of the Woods, Roseau3 hr
Jul 18, 10:32 PM CDTSevere Thunderstorm WarningFGFPolk28 min
Jul 18, 10:37 PM CDTSevere Thunderstorm WarningFGFMarshall38 min
Jul 18, 11:04 PM CDTSevere Thunderstorm WarningFGFBeltrami41 min
Jul 18, 11:11 PM CDTSevere Thunderstorm WarningFGFPennington49 min
Jul 18, 11:18 PM CDTTornado WarningFGFPennington, Red Lake27 min
Jul 18, 11:42 PM CDTTornado WarningFGFRed Lake33 min
Jul 19, 12:14 AM CDTTornado WarningFGFPolk31 min
Jul 19, 12:54 AM CDTSevere Thunderstorm WarningFGFNorman66 min
Jul 19, 1:09 AM CDTSevere Thunderstorm WarningFGFPolk66 min
Jul 19, 1:28 AM CDTSevere Thunderstorm WarningFGFClay47 min
Jul 19, 1:59 AM CDTSevere Thunderstorm WarningFGFMarshall46 min
Jul 19, 2:05 AM CDTSevere Thunderstorm WarningFGFMahnomen, Norman40 min
Jul 19, 2:15 AM CDTSevere Thunderstorm WarningFGFClay30 min
Jul 19, 2:28 AM CDTSevere Thunderstorm WarningFGFBecker47 min
Jul 19, 2:52 AM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater, Hubbard38 min
Jul 19, 3:12 AM CDTSevere Thunderstorm WarningFGFBecker63 min
Jul 18, 7:00 PM CDTTornado WarningFGFPembina45 min
Jul 18, 7:09 PM CDTSevere Thunderstorm WarningFGFGriggs51 min
Jul 18, 7:09 PM CDTTornado WarningFGFNelson51 min
Jul 18, 7:13 PM CDTTornado WarningFGFWalsh47 min
Jul 18, 7:15 PM CDTTornado WarningFGFGriggs, Steele45 min
Jul 18, 7:15 PM CDTTornado WarningFGFGrand Forks45 min
Jul 18, 7:17 PM CDTFlash Flood WarningFGFGrand Forks, Nelson3 hr
Jul 18, 7:42 PM CDTSevere Thunderstorm WarningFGFPembina48 min
Jul 18, 7:55 PM CDTSevere Thunderstorm WarningFGFWalsh50 min
Jul 18, 8:00 PM CDTTornado WarningFGFGriggs, Steele45 min
Jul 18, 8:46 PM CDTSevere Thunderstorm WarningFGFBarnes59 min
Jul 18, 10:47 PM CDTSevere Thunderstorm WarningFGFGrand Forks43 min
Jul 18, 11:28 PM CDTSevere Thunderstorm WarningFGFGrand Forks47 min
Jul 18, 11:47 PM CDTTornado WarningFGFGrand Forks28 min
Jul 19, 12:04 AM CDTSevere Thunderstorm WarningFGFTraill41 min
Jul 19, 12:27 AM CDTTornado WarningFGFTraill33 min
Jul 19, 5:07 AM CDTSevere Thunderstorm WarningFGFRansom23 min
Jul 19, 5:16 AM CDTSevere Thunderstorm WarningFGFRichland44 min
Jul 19, 6:02 AM CDTSevere Thunderstorm WarningFGFCass28 min

Nearby

Flash Flood Warnings in Minnesota, 2001Flash Flood Warnings in North Dakota, 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.