Alert archive / North Dakota / Flash Flood Warnings in 2001

Flash Flood Warning 21, NWS Grand Forks, ND

July 27, 2001Grand Forks County, North Dakota; Polk County, Minnesota

NWS Grand Forks, ND issued this flash flood warning at Jul 27, 2001, 10:08 AM CDT for Grand Forks County, North Dakota; Polk 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.

The facts

Issued: Jul 27, 2001, 10:08 AM CDT (15:08 UTC)
Expired: Jul 27, 2001, 4:00 PM CDT
In force: 6 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), 49 km from the middle of the area, began a volume at 15:08 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, 3.1 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-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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1255 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KFGF 271513
FFWFGF
MNC119-NDC035-272100-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND-GRAND FORKS
1008 AM CDT FRI JUL 27 2001

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  EASTERN GRAND FORKS COUNTY AND NORTHWEST TRAILL IN NORTHEAST NORTH
  DAKOTA AND WESTERN POLK COUNTY IN NORTHWEST MINNESOTA.

* UNTIL 400 PM CDT

* AT 1002 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH HEAVY RAIN CONTINUE TO MOVE ALONG A LINE
  EXTENDING FROM HATTON TO THOMPSON TO GRAND FORKS TO TABOR.
  MOVEMENT WAS TO THE NORTHEAST AT 15 MPH.

* SPOTTERS HAVE ALREADY REPORTED 1.77 INCHES OF RAIN IN SOUTH GRAND
FORKS COUNTY...WITH RADAR ESTIMATES OF AROUND 1.50 INCHES IN
NORTHWEST TRAILL AND WESTERN POLK COUNTIES.

THUNDERSTORMS WILL CONTINUE TO MOVE OVER THE SAME AREAS TODAY...AND
PRODUCE RAPID RISES ON SMALL STREAMS AND RIVERS. THERE MAY BE A FEW
BREAKS IN THE PRECIPITATION TODAY...BUT EXPECT HEAVY RAIN DURING
TIMES OF PRECIPITATION. AN ADDITIONAL 1 TO 2 INCHES ARE EXPECTED IN
THE WARNING AREA...WITH LOCALLY HIGHER AMOUNTS POSSIBLE.

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 4804 9686 4750 9759 4772 9724 4827 9650


$$
DJK

NNNN

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 27, 10:30 AM CDT	Flash Flood Warning	FGF	Eddy, Nelson	6 hr

Nearby

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