Alert archive / Wisconsin / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 43, NWS Duluth, MN

September 11, 1990Sawyer County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Sep 11, 1990, 6:25 PM CDT for Sawyer County, Wisconsin. It was in force for 65 min.

The area

The counties it named.

The facts

Issued
Sep 11, 1990, 6:25 PM CDT (23:25 UTC)
Expired
Sep 11, 1990, 7:30 PM CDT
In force
65 min
Issued by
NWS Duluth, MN
Area
Whole counties

County Sawyer County, WI

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

International Fa, MN (KINL), launched 12:00Z, 11.4 hours before the alert went out and 340 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 12:00Z on 1990-09-11Temperature 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, International Fa, MN at 12:00Z on 1990-09-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 162 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1705 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
162 m²/s²
0-3 km storm-relative helicity
204 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.

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

Special weather statement, Sep 11, 1:38 PM CDT, 4 hours 47 minutes before
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Special weather statement, Sep 11, 1:39 PM CDT, 4 hours 46 minutes before
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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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Special weather statement, Sep 11, 5:48 PM CDT, 37 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
545 PM CDT TUE SEP 11 1990

AT 530 PM CDT...RADAR INDICATED SEVERAL HEAVY THUNDERSTORMS ALONG THE
MINNESOTA/CANADIAN BORDER NEAR INTERNATIONAL FALLS AND EXTENDING
SOUTHWEST TOWARD FARGO. THESE STORMS ARE MOVING TO THE EAST AT 30 MPH
AND WILL MOVE OVER RAINY LAKE AREA...CLEAR WATER AND SOUTHWEST
BELTRAMI COUNTIES BY 630 PM CDT.

THESE STORMS MAY CONTAIN HEAVY RAIN...STRONG GUSTY WINDS...SMALL
HAIL... AND DANGEROUS LIGHTENING.

BOATERS AND OTHER OUTDOOR ENTHUSIASTS...SHOULD SEEK SHELTER IF
THUNDERSTORMS APPROACH. KEEP TUNED TO NOAA WEATHER RADIO...YOUR
FAVORITE AM/FM RADIO OR TV STATION IN THE EVENT FURTHER STAT9EMENTS
ARE REQUIRED.

CARROLL
Special weather statement, Sep 11, 5:50 PM CDT, 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
545 PM CDT TUE SEP 11 1990

...SEVERE THUNDERSTORM WATCH IN EFFECT FOR A LARGE PORTION OF CENTRAL
AND NORTHERN MINNESOTA UNTIL 1100 PM CDT...

AT 530 PM CDT...RADAR INDICATED SEVERAL HEAVY THUNDERSTORMS ALONG THE
MINNESOTA/CANADIAN BORDER NEAR INTERNATIONAL FALLS AND EXTENDING
SOUTHWEST TOWARD FARGO. THESE STORMS ARE MOVING TO THE EAST AT 30 MPH
AND WILL MOVE OVER RAINY LAKE AREA...CLEAR WATER AND SOUTHWEST
BELTRAMI COUNTIES BY 630 PM CDT.

THESE STORMS MAY CONTAIN HEAVY RAIN...STRONG GUSTY WINDS...SMALL
HAIL... AND DANGEROUS LIGHTENING.

BOATERS AND OTHER OUTDOOR ENTHUSIASTS...SHOULD SEEK SHELTER IF
THUNDERSTO<RMS APPROACH. KEEP TUNED TO NOAA WEATHER RADIO...YOUR
FAVORITE AM/FM RADIO OR TV STATION IN THE EVENT FURTHER STATEMENTS
ARE REQUIRED.

CARROLL

Nearby

Severe Thunderstorm Warnings in Wisconsin, 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.