Alert archive / North Dakota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 36, NWS Grand Forks, ND

August 3, 1989Ransom County, Sargent County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Aug 3, 1989, 9:28 PM CDT for Ransom County, Sargent County, North Dakota. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Aug 3, 1989, 9:28 PM CDT (02:28 UTC)
Expired
Aug 3, 1989, 10:30 PM CDT
In force
62 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Ransom County, ND, Sargent County, ND

The radar

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

The nearest sounding before it

Minneapolis, MN (KSTC), launched 00:00Z, 2.5 hours before the alert went out and 353 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, Minneapolis, MN at 00:00Z on 1989-08-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2642 joules per kilogram.LCLEL10008507005003002001001 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, Minneapolis, MN at 00:00Z on 1989-08-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
2642 J/kg
Mixed-layer CIN
-2 J/kg
Mixed-layer LCL
1158 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
104 m²/s²
Significant tornado parameter
0.0
Supercell composite
4.2

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, 7:25 PM CDTSevere Thunderstorm WarningFGFBeltrami, Koochiching35 min
Aug 3, 8:00 PM CDTSevere Thunderstorm WarningFGFBeltrami, Koochiching60 min

Nearby

Severe Thunderstorm Warnings in North Dakota, 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; the sounding from the Mesonet's radiosonde archive.