Alert archive / Minnesota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 15, NWS Sioux Falls, SD

May 23, 1989Nobles County, Minnesota

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 23, 1989, 7:06 PM CDT for Nobles County, Minnesota. It was in force for 39 min.

The area

The counties it named.

The facts

Issued
May 23, 1989, 7:06 PM CDT (00:06 UTC)
Expired
May 23, 1989, 7:45 PM CDT
In force
39 min
Issued by
NWS Sioux Falls, SD
Area
Whole counties

County Nobles 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, 0.1 hours before the alert went out and 216 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 1989-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1041 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 1989-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 88 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
1041 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
1374 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
88 m²/s²
0-3 km storm-relative helicity
267 m²/s²
Significant tornado parameter
0.4
Supercell composite
6.8

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, May 23, 5:24 PM CDT, 1 hour 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
520 PM CDT TUE MAY 23 1989

INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN...DANGEROUS LIGHTNING...
AND SMALL HAIL WERE MOVING ACROSS MOVING ACROSS MOODY COUNTY IN
SOUTHEAST SOUTH DAKOTA AND ALONG THE SOUTHWEST BORDER OF PIPESTONE
COUNTY IN SOUTHWEST MINNESOTA AT 515 PM CDT.

THE VERY HEAVY RAIN WILL BE A HAZARD FOR MOTORISTS AND ANYONE OUTDOORS
SHOULD SEEK SHELTER WHEN LIGHTNING MOVES INTO THEIR IMMEDIATE AREA.

THE INTENSE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. PERSONS IN
FLANDREAU...EGAN...AND LONE TREE IN SOUTHEAST SOUTH DAKOTA...AND PERSONS
IN PIPESTONE AND TROSKY IN PIPESTONE COUNTY AND HARDWICK IN ROCK COUNTY
OF SOUTHWEST IOWA SHOULD BE ALERT FOR THE POSSIBLITLY OF THESE STORMS
INTENSIFYING AND CAUSING SEVERE WEATHER THROUGH 630 PM CDT.

UMLAND
Special weather statement, May 23, 5:28 PM CDT, 1 hour 38 minutes before
SPECIAL WEATHER STATEMENT  ...CORRECTED..
NATIONAL WEATHER SERVICE SIOUX FALLS SD
520 PM CDT TUE MAY 23 1989

INTENSE THUNDERSTORMS WITH VERY HEAVY RAIN...DANGEROUS LIGHTNING...
AND SMALL HAIL WERE MOVING ACROSS MOODY COUNTY IN
SOUTHEAST SOUTH DAKOTA AND ALONG THE SOUTHWEST BORDER OF PIPESTONE
COUNTY IN SOUTHWEST MINNESOTA AT 515 PM CDT.

THE VERY HEAVY RAIN WILL BE A HAZARD FOR MOTORISTS AND ANYONE OUTDOORS
SHOULD SEEK SHELTER WHEN LIGHTNING MOVES INTO THEIR IMMEDIATE AREA.

THE INTENSE THUNDERSTORMS WERE MOVING EAST AT 30 MPH. PERSONS IN
FLANDREAU...EGAN...AND LONE TREE IN SOUTHEAST SOUTH DAKOTA...AND PERSONS
IN PIPESTONE AND TROSKY IN PIPESTONE COUNTY AND HARDWICK IN ROCK COUNTY
OF SOUTHWEST MINNESOTA SHOULD BE ALERT FOR THE POSSIBLITLY OF THESE
STORMS INTENSIFYING AND CAUSING SEVERE WEATHER THROUGH 630 PM CDT.

UMLAND

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 7:52 PM CDTSevere Thunderstorm WarningFSDGregory, Tripp53 min
May 23, 9:51 PM CDTSevere Thunderstorm WarningFSDBon Homme39 min
May 23, 7:27 PM CDTSevere Thunderstorm WarningFSDLyon48 min
May 23, 7:27 PM CDTSevere Thunderstorm WarningFSDOsceola48 min
May 23, 8:07 PM CDTTornado WarningFSDLyon, Osceola38 min
May 23, 8:21 PM CDTSevere Thunderstorm WarningFSDO'Brien69 min
May 23, 8:22 PM CDTSevere Thunderstorm WarningFSDOsceola38 min
May 23, 8:37 PM CDTSevere Thunderstorm WarningFSDSioux38 min
May 23, 9:29 PM CDTSevere Thunderstorm WarningFSDCherokee61 min
May 23, 11:34 PM CDTSevere Thunderstorm WarningFSDCherokee, Ida56 min
May 24, 12:32 AM CDTSevere Thunderstorm WarningFSDIda28 min
May 23, 7:53 PM CDTSevere Thunderstorm WarningFSDNobles37 min

Nearby

Severe Thunderstorm Warnings in Minnesota, 1989Every severe thunderstorm warning in 1989

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.