Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 55, NWS Duluth, MN

September 13, 1990Aitkin County, Minnesota

NWS Duluth, MN issued this severe thunderstorm warning at Sep 13, 1990, 6:32 PM CDT for Aitkin County, Minnesota. It was in force for 28 min.

The area

The counties it named.

The facts

Issued
Sep 13, 1990, 6:32 PM CDT (23:32 UTC)
Expired
Sep 13, 1990, 7:00 PM 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 12:00Z, 11.5 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 12:00Z on 1990-09-13Temperature 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, Minneapolis, MN at 12:00Z on 1990-09-13The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -48 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
1762 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
-48 m²/s²
0-3 km storm-relative helicity
-139 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

Local storm report, Sep 13, 1:28 PM CDT, 5 hours 4 minutes before
STORM REPORT
NATIONAL WEATHER SERVICE DULUTH MN
125 PM CDT THU SEP 13 1990

      ...ATTN SELS A DLH...
SEP 13 1990   TIMES CENTRAL DAYLIGHT

   STORM REPORT FOR SEP 12 1990

  9 20 PM.. PEA SIZE HAILh 2 WEST OF POPLAR DOUGLAS CTY WI
  9 30 PM..PEA SIZE HAIL JUST NORTH OF SOLON SPRINGS WI   DOUGLAS CTY WI
  9 35 PM..GOLF BALL SIZE HAIL AT LAKE NEBAGAMON OF NORTHEAST DOUGLAS
           COUNTY WI  (REPORTS FROM DNR RANGER)

 ..C.CHRISTENSON..
Special weather statement, Sep 13, 4:17 PM CDT, 2 hours 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
415 PM CDT THU SEP 13 1990

...A TORNADO WATCH IS IN EFFECT FOR SOUTHERN CLEARWATER COUNTY UNTIL
1100 PM CDT THIS THURSDAY AFTERNOON AND EVENING...

AT 355 PM CDT...RADAR INDICATED A LINE OF THUNDERSTORMS FROM NEAR
ELY SOUTHWEST TO 35 MILES SOUTHWEST OF GRAND RAPIDS. THESE
THUNDERSTORMS ARE MOVING NORTHEAST AT 45 MPH.

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

WITHIN THE TORNADO WATCH AREA...TORNADOES AND A FEW SEVERE
THUNDERSTORMS WITH HAIL TO 21/2 INCHES IN DIAMETER AND WIND GUSTS
TO 80 MPH ARE POSSIBLE.

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

CARROLL
Special weather statement, Sep 13, 5:03 PM CDT, 1 hour 29 minutes before
MNZ007>9-132200-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
500 PM CDT THU SEP 13 1990

...TORNADO WATCH MUCH OF MINNESOTA AND NORTHWEST WISCONSIN
   AND WESTERN LAKE SUPERIOR UNTIL 11 PM CDT...

AT 5 00 PM CDT THUNDERSTORMS WERE DEVELOPING RAPIDLY IN NORTH CENTRAL
MINNESOTA.  AT 4 45 PM ST LOUIS COUNTY SHERIFF IN VIRGINIA REPORTED
HEAVY RAIN AND PEA-SIZE HAIL IN HIBBING.  ANOTHER VERY STRONG
THUNDERSTORM CELL WAS LOCATED NEAR HOVLAND ON THE NORTH SHORE OF
LAKE SUPERIOR BETWEEN GRAND MARAIS AND PORTAGE.

PLEASE LISTEN FOR FURTHER STATEMENTS AND POSSIBLE WARNINGS FROM
YOUR NATIONAL WEATHER SERVICE.

DFM
Special weather statement, Sep 13, 5:19 PM CDT, 1 hour 13 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
518 PM CDT THU SEP 13 1990

...A TORNADO WATCH IS IN EFFECT FOR A LARGE PART OF CENTRAL AND
EASTERN MINNESOTA...PARTS OF WESTERN WISCONSIN...AND A SMALL PART OF
WESTERN LAKE SUPERIOR UNTIL 1100 PM CDT THIS THURSDAY AFTERNOON AND
EVENING...

AT 510 PM CDT...RADAR INDICATED A LINE OF THUNDERSTORMS FROM THE
SOUTHWEST TO 25 MILES NORTHEAST OF ALEXANDRIA. THESE THUNDERSTORMS
ARE MOVING EAST AT 45 MPH.

ANOTHER LINE OF THUNDERSTORMS EXTENDS FROM 30 MILES NORTHEAST OF
THIEF RIVER FALLS SOUTHWEST TO THE FARGO AREA.

THE STRONGER STORMS CONTAIN HEAVY RAIN...STRONG GUSTY WINDS...LARGE
HAIL...AND DANGEROUS LIGHTNING.

WITHIN THE TORNADO WATCH AREA...TORNADOES AND A FEW SEVERE
THUNDERSTORMS WITH HAIL TO 21/2 INCHES IN DIAMETER AND WIND GUSTS
TO 80 MPH ARE POSSIBLE.

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 STATEMENTS
ARE REQUIRED.

CARROLL
Special weather statement, Sep 13, 5:27 PM CDT, 1 hour 5 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
518 PM CDT THU SEP 13 1990

...A TORNADO WATCH IS IN EFFECT FOR A LARGE PART OF CENTRAL AND
EASTERN MINNESOTA...PARTS OF WESTERN WISCONSIN...AND A SMALL PART OF
WESTERN LAKE SUPERIOR UNTIL 1100 PM CDT THIS THURSDAY AFTERNOON AND
EVENING...

AT 510 PM CDT...RADAR INDICATED A LINE OF THUNDERSTORMS FROM THE
ARROWHEAD SOUTHWEST TO 25 MILES NORTHEAST OF ALEXANDRIA. THESE
THUNDERSTORMS ARE MOVING EAST AT 45 MPH.

ANOTHER LINE OF THUNDERSTORMS EXTENDS FROM 30 MILES NORTHEAST OF
THIEF RIVER FALLS SOUTHWEST TO THE FARGO AREA.

THE STRONGER STORMS CONTAIN HEAVY RAIN...STRONG GUSTY WINDS...LARGE
HAIL...AND DANGEROUS LIGHTNING.

WITHIN THE TORNADO WATCH AREA...TORNADOES AND A FEW SEVERE
THUNDERSTORMS WITH HAIL TO 21/2 INCHES IN DIAMETER AND WIND GUSTS
TO 80 MPH ARE POSSIBLE.

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 STATEMENTS
ARE REQUIRED.

CARROLL
Special weather statement, Sep 13, 5:46 PM CDT, 46 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
545 PM CDT THU SEP 13 1990

...A TORNADO WATCH IS IN EFFECT FOR A LARGE PART OF CENTRAL AND
EASTERN MINNESOTA...PARTS OF WESTERN WISCONSIN...AND A SMALL PART OF
WESTERN LAKE SUPERIOR UNTIL 1100 PM CDT THIS THURSDAY AFTERNOON AND
EVENING...

AT 540 PM CDT...RADAR INDICATED A LINE OF SHOWERS AND THUNDERSTORMS
MOVING OVER NORTHERN BELTRAMI AND CLEARWATER COUNTIES EXTENDING FROM
THE WESTERN SHORES OF UPPER AND LOWER RED LAKE SOUTHWEST TO NEAR
FARGO. THEY ARE MOVING EAST AT 40 MPH.

THESE SHOWERS AND THUNDERSTORMS HAVE A HISTORY OF PRODUCING WIND
GUSTS TO 45 MPH AS THEY MOVED OVER THIEF RIVER FALLS.

ANOTHER LINE OF THUNDERSTORMS EXTENDS FROM THE ARROWHEAD SOUTHWEST
TO 40 MILES NORTHEAST OF ALEXANDRIA.

THE STRONGER STORMS CONTAIN HEAVY RAIN...STRONG GUSTY WINDS...LARGE
HAIL...AND DANGEROUS LIGHTNING.

WITHIN THE TORNADO WATCH AREA...TORNADOES AND A FEW SEVERE
THUNDERSTORMS WITH HAIL TO 21/2 INCHES IN DIAMETER AND WIND GUSTS
TO 80 MPH ARE POSSIBLE.

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 STATEMENTS
ARE REQUIRED.

CARROLL

The office that day

Everything else NWS Duluth, MN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 13, 5:10 PM CDTSevere Thunderstorm WarningDLHCass35 min
Sep 13, 5:29 PM CDTSevere Thunderstorm WarningDLHSaint Louis31 min
Sep 13, 5:37 PM CDTSevere Thunderstorm WarningDLHCrow Wing38 min
Sep 13, 5:52 PM CDTTornado WarningDLHAitkin38 min
Sep 13, 6:10 PM CDTTornado WarningDLHCrow Wing20 min
Sep 13, 6:39 PM CDTSevere Thunderstorm WarningDLHCarlton36 min
Sep 12, 8:59 PM CDTSevere Thunderstorm WarningDLHDouglas61 min
Sep 12, 9:51 PM CDTSevere Thunderstorm WarningDLHBayfield, Douglas69 min
Sep 12, 11:01 PM CDTSevere Thunderstorm WarningDLHBayfield, Douglas59 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.