Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 32, NWS Grand Forks, ND

August 3, 1989Lake of the Woods County, Roseau County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 3, 1989, 5:50 PM CDT for Lake of the Woods County, Roseau County, Minnesota. It was in force for 30 min. 2 reports came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Aug 3, 1989, 5:50 PM CDT (22:50 UTC)
Expired
Aug 3, 1989, 6:20 PM CDT
In force
30 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Lake of the Woods County, MN, Roseau County, MN

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Aug 3, 5:50 PM CDTHail 1Roseau, MN
Aug 3, 6:30 PM CDTThunderstorm Wind 65Roseau, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Bismarck Municip, ND (KBIS), launched 12:00Z, 10.8 hours before the alert went out and 457 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 1989-08-03Temperature 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 1989-08-03The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.19395878Sfc1 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
2369 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
75 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 3, 3:24 PM CDTSevere Thunderstorm WarningFGFKittson, Marshall66 min
Aug 3, 4:19 PM CDTSevere Thunderstorm WarningFGFKittson, Marshall56 min
Aug 3, 4:45 PM CDTSevere Thunderstorm WarningFGFRoseau30 min
Aug 3, 5:15 PM CDTSevere Thunderstorm WarningFGFRoseau30 min
Aug 3, 6:39 PM CDTSevere Thunderstorm WarningFGFMarshall, Pennington66 min
Aug 2, 7:21 PM CDTSevere Thunderstorm WarningFGFRansom, Sargent39 min
Aug 2, 8:53 PM CDTSevere Thunderstorm WarningFGFGrand Forks, Nelson, Walsh67 min
Aug 2, 9:56 PM CDTSevere Thunderstorm WarningFGFGrand Forks, Nelson, Walsh64 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1989Every severe thunderstorm warning in 1989

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.