Alert archive / Minnesota / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 15, NWS Duluth, MN

June 29, 1990Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin

NWS Duluth, MN issued this severe thunderstorm warning at Jun 29, 1990, 8:10 PM CDT for Carlton County, Saint Louis County, Minnesota; Douglas County, Wisconsin. It was in force for 50 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued
Jun 29, 1990, 8:10 PM CDT (01:10 UTC)
Expired
Jun 29, 1990, 9:00 PM CDT
In force
50 min
Issued by
NWS Duluth, MN
Area
Whole counties

Counties Carlton County, MN, Saint Louis County, MN, Douglas County, WI

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
Jun 29, 8:15 PM CDTHail 1St. Louis, MN

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

International Fa, MN (KINL), launched 00:00Z, 1.2 hours before the alert went out and 201 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 1990-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 306 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 1990-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 square meters per square second.1939587897Sfc1 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
306 J/kg
Mixed-layer CIN
-78 J/kg
Mixed-layer LCL
1870 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
101 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

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, Jun 29, 2:38 PM CDT, 5 hours 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
125 PM CDT FRI JUN 29 1987

AT 125 PM CDT A HEAVY THUNDERSTORM LOCATED 10 MILES SOUTH OF
INTERNATIONAL FALLS IS MOVING SOUTHEAST AT 20 TO 25 MPH. THIS STORM
WILL MOVE INTO NORTHWEST ST LOUIS COUNTY OF MINNISOTA BY 3 PM CDT.

THIS STORM MAY COTAIN SMALL HAIL..GUSTY WINDS AND DANGEROUS LIGHTNING

BOATERES AND PERSONS ENGAGED IN OUTDOOR ACTIVITIES SHOULF REMAIN
ALERT FOR RAPIDLY CHANGING CONDITIONS AND BE PREPARED TO SEEK SHELTER
IF THREATNING WEATHER APPROACHES.

FAIRHURST
Special weather statement, Jun 29, 3:33 PM CDT, 4 hours 37 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
330 PM CDT FRI JUN 29 1987

SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOPE ALONG THE CANADIAN
BORDER.

THUNDERSTORMS ARE DEVELOPING RAPIDLY FROM BAUDETTE TO INTERNATIONAL
FALLS MN. THESE STORMS ARE MOVING EAST AND ARE EXPECTED TO CONTINUE
UNTIL EARLY EVENING. GUSTY WINDS..SMALL HAIL AND DANGEROUS LIGHTNING
MAY BE OBSERVED WITH SOMQE OF THESE STORMS.

BOATERS THE RAINY LAKE CHAIN AND PERSONS ENGAGED IN OUTDOOR
ACTIVITIES SHOULD REMAIN ALERT FOR RAPIDLY CHANGING CONDITIONS AND BE
PREPARED TO SEEK SHELTER IF THREATNING WEATHER APPROACHES.

FAIRHURST
Special weather statement, Jun 29, 3:36 PM CDT, 4 hours 34 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
330 PM CDT FRI JUN 29 1987

SHOWERS AND THUNDERSTORMS CONTINUE TO DEVELOP ALONG THE CANADIAN
BORDER.

THUNDERSTORMS ARE DEVELOPING RAPIDLY FROM BAUDETTE TO INTERNATIONAL
FALLS MN. THESE STORMS ARE MOVING EAST AND ARE EXPECTED TO CONTINUE
UNTIL EARLY EVENING. GUSTY WINDS..SMALL HAIL AND DANGEROUS LIGHTNING
MAY BE OBSERVED WITH SOME OF THESE STORMS.

BOATERS THE RAINY LAKE CTHAIN AND PERSONS ENGAGED IN OUTDOOR
ACTIVITIES SHOULD REMAIN ALERT FOR RAPIDLY CHANGING CONDITIONS AND BE
PREPARED TO SEEK SHELTER IF THREATNING WEATHER APPROACHES.

FAIRHURST
Special weather statement, Jun 29, 5:14 PM CDT, 2 hours 56 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INTERNATIONAL FALLS MN
515 PM CDT FRI JUN 29 1987

...SHOWERS AND THUNDERSTORMS CONTINUE IN NORTHERN MINNESOTA ALONG THE
CANADIAN BORDER.

THUNDERSTORMS ARE CONTINUING TO DEVELOP OVER THE MINNESOTA COUNTIES
ALONG THE CANADIAN BORDER. THESE STORMS ARE MOVING EAST AND ARE
EXPECTED TO CONTINUE INTO THE EVENING. GUSTY WINDS...HAIL...BRIEF
HEAVY RAIN AND DANGEROUS LIGHTNING MAY BE OBSERVED WITH SOME OF THESE
STORMS.

BOATERS ON THE RAINY LAKE CHAIN AND PERSONS ENGAGED IN OUTDOOR
ACTIVITIES SHOULD REMAIN ALERT FOR RAPIDLY CHANGING CONDITIONS AND BE
PREPARED TO SEEK SHELTER IF THREATNING WEATHER APPROACHES.

PUBLIC REPORTS OF MARBLE SIZED HAIL WERE RECEIVED FROM GREENBUSH IN
ROSEAU COUNTY...AND TWO INCH HAIL ACROSS THE CANADIAN BORDER NORTH OF
FORT FRANCIS/INTERNATIONAL FALLS.

CARROLL
Special weather statement, Jun 29, 5:43 PM CDT, 2 hours 27 minutes before
MNZ004-292330-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DULUTH MN
540 PM CDT FRI JUN 29 1990

...STRONG THUNDERSTORMS DEVELOPING IN NORTHERN ST LOUIS COUNTY...

AT 5 40 PM DULUTH RADAR DETECTED RAPIDLY DEVELOPING THUDERSTORMS
IN NORTHERN ST LOUIS COUNTY BETWEEN INTERNATIONAL FALLS AND HIBBING
NEAR ORR...GHEEN...AND NETT LAKE.

THESE STORMS WILL PRODUCE BRIEF VERY HEAVY RAIN...
HAIL TO 1-INCH DIAMETER AND PEAK WIND GUSTS TO 50 MILES AN HOUR
AS THEY MOVE EAST SOUTHEAST AT 30 TO 40 MILES AN HOUR.

PLEASE STAY TUNED FOR LATER STATEMENTS AND POSSIBLE WARNINGS FOR THESE
STORMS FROM YOUR NATIONAL WEATHER SERVICE.

DFM
Special weather statement, Jun 29, 7:26 PM CDT, 44 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 7:15 PM CDTSevere Thunderstorm WarningDLHSaint Louis45 min
Jun 29, 7:55 PM CDTSevere Thunderstorm WarningDLHItasca35 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1990Severe 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.