Alert archive / North Dakota / Flash Flood Warnings in 2000

Flash Flood Warning 10, NWS Grand Forks, ND

June 20, 2000Grand Forks County, North Dakota; Polk County, Minnesota

NWS Grand Forks, ND issued this flash flood warning at Jun 20, 2000, 1:28 AM CDT for Grand Forks County, North Dakota; Polk County, Minnesota. It was in force for 3 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
Jun 20, 2000, 1:28 AM CDT (06:28 UTC)
Expired
Jun 20, 2000, 4:00 AM CDT
In force
3 hr
Issued by
NWS Grand Forks, ND
Area
Whole counties; the outline is the Mesonet’s reconstruction

Counties Polk County, MN, Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 37 km from the middle of the area, began a volume at 06:27 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

Bismarck Municip, ND (KBIS), launched 00:00Z, 6.5 hours before the alert went out and 284 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, Bismarck Municip, ND at 00:00Z on 2000-06-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1069 joules per kilogram.LCLLFCEL10008507005003002001001 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, Bismarck Municip, ND at 00:00Z on 2000-06-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 149 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
1069 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
833 m above ground
0-6 km bulk shear
37 kt
0-1 km storm-relative helicity
149 m²/s²
0-3 km storm-relative helicity
221 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.1

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KFGF 200627
FFWFGF
MNC119-NDC035-200900-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
128 AM CDT TUE JUN 20 2000

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GRAND FORKS COUNTY IN NORTHEAST NORTH DAKOTA
  NORTHWESTERN POLK COUNTY IN NORTHWEST MINNESOTA

* UNTIL 400 AM CDT

* AT 125 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH HEAVY RAIN CONTINUE MOVING NORTHEAST AT 20 MPH
  ACROSS THE GRAND FORKS COUNTY AND WERE MOVING INTO WESTERN POLK
  COUNTY.

* GRAND FORKS/EAST GRAND FORKS...GILBY...KEMPTON...
  LARIMORE...ARVILLA...AND TABOR WILL BE AFFECTED BY THE HEAVY
  RAIN. RAINFALL AMOUNTS OF 1 TO 3 INCHES SINCE 1100 PM HAVE BEEN
  INDICATED BY DOPPLER RADAR IN THE NORTHWOOD AND KEMPTON AREAS.
   THESE THUNDERSTORMS WILL BE OVER THE ABOVE MENTIONED AREAS
   THROUGH THE EARLY MORNING THIS TUESDAY.

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 4773 9785 4773 9701 4766 9639 4813 9676
          4816 9786

NNNN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 19, 7:17 PM CDTTornado WarningFGFCass28 min
Jun 19, 7:54 PM CDTFlash Flood WarningFGFSteele, Traill3 hr
Jun 19, 7:58 PM CDTFlash Flood WarningFGFCass3 hr
Jun 19, 10:02 PM CDTFlash Flood WarningFGFRansom, Richland4 hr
Jun 19, 10:21 PM CDTSevere Thunderstorm WarningFGFCass29 min
Jun 19, 10:57 PM CDTFlash Flood WarningFGFCass, Traill5 hr
Jun 20, 1:59 AM CDTFlash Flood WarningFGFRansom, Richland2 hr
Jun 19, 7:36 PM CDTTornado WarningFGFClay29 min
Jun 19, 8:03 PM CDTTornado WarningFGFClay32 min
Jun 20, 12:16 AM CDTFlash Flood WarningFGFNorman4 hr
Jun 20, 1:44 AM CDTFlash Flood WarningFGFMahnomen, Pennington, Polk, Red Lake2 hr

Nearby

Flash Flood Warnings in North Dakota, 2000Flash Flood Warnings in Minnesota, 2000Every flash flood warning in 2000

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.