Alert archive / Minnesota / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 38, NWS Grand Forks, ND

June 17, 1991Beltrami County, Koochiching County, Lake of the Woods County, Minnesota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jun 17, 1991, 10:03 PM CDT for Beltrami County, Koochiching County, Lake of the Woods County, Minnesota. It was in force for 57 min.

The area

The counties it named.

The facts

Issued
Jun 17, 1991, 10:03 PM CDT (03:03 UTC)
Expired
Jun 17, 1991, 11:00 PM CDT
In force
57 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Beltrami County, MN, Koochiching County, MN, Lake of the Woods County, MN

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 3.1 hours before the alert went out and 95 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, International Fa, MN at 00:00Z on 1991-06-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 793 joules per kilogram.LCLLFCEL10008507005003002001001 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, International Fa, MN at 00:00Z on 1991-06-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 12 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
793 J/kg
Mixed-layer CIN
-112 J/kg
Mixed-layer LCL
1857 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
12 m²/s²
0-3 km storm-relative helicity
95 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
Jun 17, 10:46 PM CDTSevere Thunderstorm WarningFGFBeltrami, Koochiching, Lake of the Woods44 min
Jun 17, 11:00 PM CDTSevere Thunderstorm WarningFGFMahnomen, Norman, Polk45 min
Jun 18, 12:07 AM CDTSevere Thunderstorm WarningFGFClearwater68 min
Jun 18, 12:49 AM CDTSevere Thunderstorm WarningFGFBeltrami, Clearwater56 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1991Every severe thunderstorm warning in 1991

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.