Alert archive / Minnesota / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 26, NWS Grand Forks, ND

July 4, 1994Traverse County, Wilkin County, Minnesota; Richland County, North Dakota

NWS Grand Forks, ND issued this severe thunderstorm warning at Jul 4, 1994, 8:58 PM CDT for Traverse County, Wilkin County, Minnesota; Richland County, North Dakota. It was in force for 62 min.

The area

The counties it named.

The facts

Issued
Jul 4, 1994, 8:58 PM CDT (01:58 UTC)
Expired
Jul 4, 1994, 10:00 PM CDT
In force
62 min
Issued by
NWS Grand Forks, ND
Area
Whole counties

Counties Traverse County, MN, Wilkin County, MN, Richland County, ND

The nearest sounding before it

Aberdeen, SD (KHON), launched 00:00Z, 2.0 hours before the alert went out and 194 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, Aberdeen, SD at 00:00Z on 1994-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2414 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, Aberdeen, SD at 00:00Z on 1994-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 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
2414 J/kg
Mixed-layer CIN
-67 J/kg
Mixed-layer LCL
1614 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
120 m²/s²
Significant tornado parameter
0.4
Supercell composite
6.9

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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Jul 4, 8:28 PM CDT, 30 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE FARGO ND
825 PM CDT MON JULY 4 1994

TIME      EVENT
758 PM    1/2 TO 3/4 INCH HAIL REPORTED AT LIDGERWOOD NORTH DAKOTA
          ...RICHLAND COUNTY BY WAHPETON ND WARNING POINT.
Local storm report, Jul 4, 8:28 PM CDT, 30 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE FARGO ND
825 PM CDT MON JULY 4 1994

TIME      EVENT
758 PM    1/2 TO 3/4 INCH HAIL REPORTED AT LIDGERWOOD NORTH DAKOTA
          ...RICHLAND COUNTY BY WAHPETON ND WARNING POINT.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 4, 9:56 PM CDTSevere Thunderstorm WarningFGFGrant, Traverse, Wilkin64 min
Jul 4, 10:21 PM CDTSevere Thunderstorm WarningFGFStevens39 min
Jul 4, 10:57 PM CDTSevere Thunderstorm WarningFGFStevens33 min
Jul 4, 8:00 PM CDTSevere Thunderstorm WarningFGFRichland60 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1994Severe Thunderstorm Warnings in North Dakota, 1994Every severe thunderstorm warning in 1994

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.