Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 19, NWS Duluth, MN

July 8, 1990Aitkin County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Jul 8, 1990, 2:17 AM CDT for Aitkin County, Minnesota. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Jul 8, 1990, 2:17 AM CDT (07:17 UTC)
Expired
Jul 8, 1990, 2:45 AM CDT
In force
28 min
Issued by
NWS Duluth, MN
Area
Whole counties

County Aitkin County, MN

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, 7.3 hours before the alert went out and 196 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 1990-07-08Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1386 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, Minneapolis, MN at 00:00Z on 1990-07-08The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 164 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
1386 J/kg
Mixed-layer CIN
-245 J/kg
Mixed-layer LCL
726 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
164 m²/s²
0-3 km storm-relative helicity
268 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

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 Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 7, 7:11 PM CDTSevere Thunderstorm WarningDLHCass, Crow Wing54 min
Jul 7, 11:23 PM CDTSevere Thunderstorm WarningDLHCass67 min
Jul 8, 1:27 AM CDTSevere Thunderstorm WarningDLHCass, Itasca63 min
Jul 8, 3:20 AM CDTSevere Thunderstorm WarningDLHPine25 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990Every severe thunderstorm warning in 1990

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.