Alert archive / North Dakota / Tornado Watches in 1997

Tornado Watch 675

August 5, 19978 counties in Minnesota; 25 counties in North Dakota

The Storm Prediction Center issued this tornado watch at Aug 5, 1997, 4:00 PM CDT for 8 counties in Minnesota; 25 counties in North Dakota. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
Aug 5, 1997, 4:00 PM CDT (21:00 UTC)
Expired
Aug 5, 1997, 10:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
All 33 counties

Clay County, MN, Kittson County, MN, Marshall County, MN, Norman County, MN, Pennington County, MN, Polk County, MN, Red Lake County, MN, Wilkin County, MN, Barnes County, ND, Benson County, ND, Cass County, ND, Cavalier County, ND, Dickey County, ND, Eddy County, ND, Foster County, ND, Grand Forks County, ND, Griggs County, ND, Kidder County, ND, LaMoure County, ND, Logan County, ND, McIntosh County, ND, Nelson County, ND, Pembina County, ND, Ramsey County, ND, Ransom County, ND, Richland County, ND, Sargent County, ND, Steele County, ND, Stutsman County, ND, Towner County, ND, Traill County, ND, Walsh County, ND, Wells County, ND

The radar

The Fargo/Grand Forks radar (KMVX), 89 km from the middle of the area, began a volume at 21:01 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.

Warnings issued inside it

10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Aug 5, 4:07 PM CDTSevere Thunderstorm WarningFGFWalsh38 min
Aug 5, 4:33 PM CDTSevere Thunderstorm WarningFGFGrand Forks27 min
Aug 5, 4:58 PM CDTSevere Thunderstorm WarningFGFGrand Forks32 min
Aug 5, 5:27 PM CDTSevere Thunderstorm WarningFGFPolk33 min
Aug 5, 6:51 PM CDTTornado WarningFGFCass29 min
Aug 5, 7:00 PM CDTTornado WarningBISStutsman45 min
Aug 5, 7:18 PM CDTTornado WarningFGFCass42 min
Aug 5, 7:41 PM CDTTornado WarningFGFRansom, Richland34 min
Aug 5, 8:10 PM CDTSevere Thunderstorm WarningFGFWilkin35 min
Aug 5, 8:44 PM CDTSevere Thunderstorm WarningFGFRichland16 min

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 9.0 hours before the alert went out and 185 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 1997-08-05Temperature 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 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 1997-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 40 square meters per square second.1939587897Sfc1 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
1463 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
40 m²/s²
0-3 km storm-relative helicity
73 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

Nearby

Tornado Watches in North Dakota, 1997Tornado Watches in Minnesota, 1997Every tornado watch 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.