Alert archive / North Dakota / Flash Flood Warnings in 1997

Flash Flood Warning 6, NWS Grand Forks, ND

April 17, 1997Grand Forks County, North Dakota

NWS Grand Forks, ND issued this flash flood warning at Apr 17, 1997, 1:00 PM CDT for Grand Forks County, 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 counties it named.

The facts

Issued
Apr 17, 1997, 1:00 PM CDT (18:00 UTC)
Expired
Apr 17, 1997, 7:00 PM CDT
In force
6 hr
Issued by
NWS Grand Forks, ND
Area
Whole counties

County Grand Forks County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 45 km from the middle of the area, began a volume at 18:03 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 12:00Z, 6.0 hours before the alert went out and 276 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 12:00Z on 1997-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 1997-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 385 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1585 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
385 m²/s²
0-3 km storm-relative helicity
450 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 
TTAA00 KFAR 171801
FFWFAR
NDC035-180000-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE EASTERN ND/GRAND FORKS ND
100 PM CDT THU APR 17 1997
 
THE NATIONAL WEATHER SERVICE IN EASTERN ND/GRAND FORKS HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL  700 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST NORTH DAKOTA
 
   ...EASTERN GRAND FORKS COUNTY
 
...AT 100 PM CDT THE POLICE DEPARTMENT IN GRAND FORKS CONFIRMED THAT THE
LINCOLN PARK DIKE HAS BEEN BREACHED. EVACUATIONS ARE UNDERWAY.
 
PLEASE REMAIN CALM AND MONITOR THIS SITUATION ON LOCAL MEDIA CHANNELS.
 
 
A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.  MOST FLASH FLOOD DEATHS OCCUR IN AhUTOMOBILES.  DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS OR LOW SPOTS IF WATER COVERS
THE ROADWAY.  TO ESCAPE RISING WATER...MOVE TO HIGHER GROUND.
 
 
&

Nearby

Flash Flood Warnings in North Dakota, 1997Every flash flood warning in 1997

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.