Alert archive / North Dakota / Flash Flood Warnings in 2004

Flash Flood Warning 4, NWS Grand Forks, ND

July 10, 2004Cass County, North Dakota

NWS Grand Forks, ND issued this flash flood warning at Jul 10, 2004, 9:04 PM CDT for Cass County, North Dakota. It was in force for 12 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: Jul 10, 2004, 9:04 PM CDT (02:04 UTC)
Expired: Jul 11, 2004, 9:00 AM CDT
In force: 12 hr
Issued by: NWS Grand Forks, ND
Area: Counties, with a storm outline in the text

County Cass County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 72 km from the middle of the area, began a volume at 02:05 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 00:00Z, 2.1 hours before the alert went out and 235 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: 3042 J/kg
Mixed-layer CIN: -50 J/kg
Mixed-layer LCL: 1287 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: 31 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 110212
FFWFGF
NDC017-111400-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
904 PM CDT SAT JUL 10 2004

THE NATIONAL WEATHER SERVICE IN GRAND FORKS HAS ISSUED A

* FLASH FLOOD WARNING FOR...

  CASS COUNTY IN SOUTHEAST NORTH DAKOTA

* UNTIL 900 AM CDT.

* AT 900 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
THUNDERSTORMS WITH HEAVY RAIN CONTINUING MOST OF THE NIGHT. THE 
THUNDERSTORMS ARE GENERALLY MOVING NORTHEAST AT 15 MPH.

* PAGE...ARTHUR...CASSELTON...AND HUNTER WILL BE AFFECTED BY THE 
HEAVY RAIN. DOPPLER RADAR HAS ESTIMATED 2 TO 3 INCHES OF RAIN IN THE 
PAST HOUR. EXPECT AN ADDITIONAL 2 TO 3 INCHES OF RAIN THE REMAINDER 
OF THE NIGHT.  

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 4668 9763 4668 9683 4721 9693 4717 9766


$$

DK/JCA

2 follow-up statements

000 
WGUS73 KFGF 110419
FFSFGF
NDC017-111400-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
1117 PM CDT SAT JUL 10 2004

...A FLASH FLOOD WARNING CONTINUES FOR CASS COUNTY UNTIL 900 AM
CDT...

AT 1111 PM CDT...SHOWERS AND THUNDERSTORMS CONTINUE ACROSS CASS 
COUNTY. RADAR ESTIMATES OF UP TO 5 INCHES OF RAIN HAVE FALLEN OVER 
PORTIONS OF THE COUNTY. STREET FLOODING WAS ALSO OBSERVED IN FARGO 
TONIGHT FROM HEAVY RAIN.

SHOWERS ARE EXPECTED TO PRODUCE ADDITIONAL RAINFALL AMOUNTS OF UP TO 
ONE HALF INCH...WHICH WILL AGGRAVATE FLOODING PROBLEMS ACROSS MUCH 
OF THE COUNTY TONIGHT.

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.

$$
DK/JCA

000 
WGUS73 KFGF 111345
FFSFGF
NDC017-111415-

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS
844 AM CDT SUN JUL 11 2004

...THE FLASH FLOOD WARNING FOR CASS COUNTY HAS BEEN CANCELLED...

AT 844 AM CDT...THE HEAVY RAIN IN CASS COUNTY HAS MOVED OUT OF THE 
COUNTY. LOCAL LAW ENFORCEMENT REPORTS NO PROBLEMS WITH TRAVEL OR 
ROADWAYS AT THIS TIME. THEREFORE...THE WARNING HAS BEEN CANCELLED.

$$

7

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 10, 8:10 PM CDT	Severe Thunderstorm Warning	FGF	Barnes, Cass	65 min
Jul 10, 8:29 PM CDT	Tornado Warning	FGF	Cass	61 min
Jul 10, 10:27 PM CDT	Severe Thunderstorm Warning	FGF	Cass	48 min

Nearby

Flash Flood Warnings in North Dakota, 2004 Every flash flood warning in 2004

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.