Alert archive / North Dakota / Flash Flood Warnings in 2003

Flash Flood Warning 6, NWS Grand Forks, ND

June 23, 20034 counties in North Dakota

NWS Grand Forks, ND issued this flash flood warning at Jun 23, 2003, 5:39 PM CDT for 4 counties in North Dakota. 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: Jun 23, 2003, 5:39 PM CDT (22:39 UTC)
Expired: Jun 23, 2003, 11:45 PM CDT
In force: 6 hr
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

Counties Cass County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 113 km from the middle of the area, began a volume at 22:42 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

Aberdeen, SD (KABR), launched 12:00Z, 10.7 hours before the alert went out and 198 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: 2802 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 685 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 132 m²/s²
0-3 km storm-relative helicity: 173 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 10.9

Open this sounding in Storm Lab

The text

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

000 
WGUS53 KFGF 232249
FFWFGF
NDC017-073-077-081-240445-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
539 PM CDT MON JUN 23 2003

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  SOUTHERN CASS COUNTY IN SOUTHEAST NORTH DAKOTA...  
  RANSOM COUNTY IN SOUTHEAST NORTH DAKOTA...  
  RICHLAND COUNTY IN SOUTHEAST NORTH DAKOTA AND
  SARGENT COUNTY IN SOUTHEAST NORTH DAKOTA.

* UNTIL 1145 PM CDT.

* AT 533 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
  THUNDERSTORMS WITH HEAVY RAIN CONTINUE TO MOVE ALONG A LINE   
  EXTENDING FROM NEAR BUFFALO TO HAVANA ...OR ALONG A LINE 
  EXTENDING FROM 35 MILES WEST OF FARGO TO 46 MILES SOUTHWEST
  OF WAHPETON...MOVEMENT WAS TO THE EAST AT 15 MPH.

* GWINNER...FORMAN...ENDERLIN LEONARD AND ENDERLIN WILL BE 
  AFFECTED BY THE HEAVY RAIN. RAINFALL AMOUNTS OF 1 TO 3 INCHES 
  ARE POSSIBLE OVER THESE AREAS IN THE NEXT 1 TO 2 HOURS. 
  PORTIONS OF THESE FOUR COUNTIES HAVE ALSO RECEIVED 1 TO 3 
  INCHES OF RAIN IN THE PAST 24 HOURS. 

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 4686 9760 4596 9786 4599 9664 4690 9687


$$

GJG

2 follow-up statements

000 
WGUS73 KFGF 240212
FFSFGF
NDC017-073-077-081-240445-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
905 PM CDT MON JUN 23 2003

...A FLASH FLOOD WARNING CONTINUES FOR SOUTHERN CASS...RANSOM...
RICHLAND AND SARGENT COUNTIES UNTIL 1145 PM CDT...

AT 904 PM CDT... SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE TO 
RE-DEVELOP OVER EXTREME SOUTHEAST NORTH DAKOTA.  THE STRONGEST 
THUNDERSTORMS WITH THE HEAVIEST RAIN WILL AFFECT SOUTHERN RICHLAND 
COUNTY AS THEY MOVE NORTHEAST AT 20 MPH.  

LOOK FOR CONTINUED SHOWERS AND SCATTERED THUNDERSTORMS THROUGH 
MIDNIGHT WITH LOCALLY HEAVY RAINFALL POSSIBLE. 1 TO 3 INCHES OF RAIN 
FELL EARLIER TODAY OVER PARTS OF THE WARNING AREA AND WITH A 
SATURATED GROUND AND ADDITIONAL RAINFALL IN THE FORECAST LOCALIZED 
FLOODING IS LIKELY. 

LIDGERWOOD...HANKINSON...COLFAX...AND MILNOR WILL BE MOST AFFECTED 
BY THE HEAVY RAIN. 

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL 
TELEVISION...CABLE TELEVISION OR RADIO FOR THE LATEST WEATHER 
INFORMATION. CHECK OUT OUR WEB SITE AT 
WWW.CRH.NOAA.GOV/FGF/INDEX.HTML USING LOWER CASE.

$$
RIDDLE

000 
WGUS73 KFGF 240451
FFSFGF
NDC017-073-077-081-240515-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1144 PM CDT MON JUN 23 2003

...THE FLASH FLOOD WARNING FOR SOUTHERN CASS...RANSOM...RICHLAND AND 
SARGENT COUNTIES EXPIRED AT 1145 PM CDT...

THE THREAT FOR HEAVY RAINFALL ACROSS THE REGION HAS DIMINISHED 
THUS THE FLASH FLOOD WARNING WAS ALLOWED TO EXPIRE AT 1145 PM 
CDT. HOWEVER...A FLOOD WATCH REMAINS IN EFFECT FOR THE REGION 
UNTIL 4AM CDT WITH THE POTENTIAL FOR ADDITIONAL THUNDERSTORMS
WITH LOCALIZED HEAVY RAINS. 

STAY TUNED TO NOAA WEATHER RADIO OR YOUR LOCAL TELEVISION...CABLE
TELEVISION OR RADIO FOR THE LATEST WEATHER INFORMATION. CHECK OUT OUR
WEB SITE AT WWW.CRH.NOAA.GOV/FGF/INDEX.HTML USING LOWER CASE.

$$
BERG

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 23, 6:50 AM CDT	Severe Thunderstorm Warning	FGF	Barnes	40 min
Jun 23, 8:54 AM CDT	Severe Thunderstorm Warning	FGF	Sargent	51 min
Jun 23, 4:59 PM CDT	Tornado Warning	FGF	Sargent	31 min
Jun 23, 6:17 PM CDT	Tornado Warning	FGF	Cass	43 min

Nearby

Flash Flood Warnings in North Dakota, 2003 Every flash flood warning in 2003

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.