Alert archive / Michigan / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 74, NWS Indianapolis, IN

May 30, 1991Berrien County, Michigan

NWS Indianapolis, IN issued this severe thunderstorm warning at May 30, 1991, 9:08 PM EDT for Berrien County, Michigan. It was in force for 37 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
May 30, 1991, 9:08 PM EDT (01:08 UTC)
Expired
May 30, 1991, 9:45 PM EDT
In force
37 min
Issued by
NWS Indianapolis, IN
Area
Whole counties

County Berrien County, MI

What was reported inside it

TimeReportWhereRemark
May 30, 9:25 PM EDTThunderstorm Wind 0Berrien, MI

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

Detroit, MI (KFNT), launched 00:00Z, 1.1 hours before the alert went out and 262 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, Detroit, MI at 00:00Z on 1991-05-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1002 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, Detroit, MI at 00:00Z on 1991-05-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 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
1002 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
1381 m above ground
0-6 km bulk shear
28 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
106 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.0

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, May 30, 4:16 PM EDT, 4 hours 52 minutes before
INZALL-310200-

AREAL OUTLINE FOR SEVERE THUNDERSTORM WATCH NUMBER 437
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
310  PM EST THU MAY 30 1991

IN INDIANA SEVERE THUNDERSTORM WATCH NUMBER 437 IS IN EFFECT
UNTIL 900  PM EST AND INCLUDES ALL OF INDIANA NORTH OF A LINE
FROM 35 MILES NORTHWEST OF TERRE HAUTE TO 15 MILES NORTH OF RICHMOND.

SOME CITIES INCLUDED ARE... SOUTH BEND...FORT WAYNE...KOKOMO...
LAFAYETTE...MUNCIE...PLYMONTH AND LOGANSPORT.

REMEMBER...A WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR SEVERE
WEATHER IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD
BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR
LATER STATEMENTS AND POSSIBLE WARNINGS.
@
...CORRECTION TO ADD NORTH OF A LINE....
Special weather statement, May 30, 5:52 PM EDT, 3 hours 16 minutes before
INZALL-302250-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
450 PM EST WED MAY 29 1991

A SEVERE THUNDERSTORM WARNING IS IN EFFECT FOR ELKHART AND ST. JOSEPH
COUNTIES IN NORTH CENTRAL INDIANA UNTIL 530 PM EST.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM EST FOR THAT PART
OF INDIANA NORTH OF A LINE FROM 35 MILES NORTHWEST OF TERRE HAUTE TO
15 MILES NORTH OF RICHMOND.

SOME CITIES INCLUDED IN THE WATCH ARE SOUTH BEND...FORT WAYNE...KOKOMO
...LAFAYETTE...MUNCIE...PLYMOUTH AND LOGANSPORT.

AT 450 PM EST NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF
THUNDERSTORMS IN FAR NORTHERN INDIANA. THE THUNDERSTORMS EXTENDED
FROM 30 MILES NORTH OF FORT WAYNE TO SOUTH BEND...AND THEN SOUTHWEST
TO MORROCO...WHICH IS 45 MILES NORTHWEST OF LAFAYETTE.
.
THERE WAS ALSO AN ISOLATED THUNDERSTORM IN EAST CENTRAL ILLINOIS
ABOUT 20 MILES SOUTHWEST OF DANVILLE ILLINOIS.

THE STRONGEST THUNDERSTORMS WERE IN THE SOUTH BEND IN%DIANA AREA.
ALL OF THE THUNDERSTORMS WERE MOVING EAST AT 20 MPH.

PEOPLE IN NORTHERN INDIANA SHOULD BE ALERT FOR RAPIDLY CHANGING
WEATHER CONDTIONS...AND BE PREPARED TO TAKE SHELTER IF THREATENING
WEATHER APPROACHES.

HARLEY
Special weather statement, May 30, 6:45 PM EDT, 2 hours 23 minutes before
INZALL-302345-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
542 PM EST THU MAY 30 1991

SEVERE THUNDERSTORM WARNINGS ARE IN EFFECT FOR SOUTHERN STARKE COUNTY
INDIDNA UNTIL 6 PM EST...AND KOSCUISKO COUNTY INDIANA UNTIL 545 PM EST.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM EST FOR THAT PART
OF INDIANA NORTH OF A LINE FROM 35 MILES NORTHWEST OF TERRE HAUTE TO
15 MILES NORTH OF RICHMOND.

SOME CITIES INCLUDED IN THE WATCH ARE SOUTH BEND...FORT WAYNE...KOKOMO
...LAFAYETTE...MUNCIE...PLYMOUTH AND LOGANSPORT.

AT 540 PM EST NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF
THUNDERSTORMS IN FAR NORTHERN INDIANA. THE THUNDERSTORMS EXTENDED
FROM 20 MILES NORTHEAST OF FORT WAYNE...TO 20 MILES SOUTH OF SOUTH BEND
...TO FRANCESVILLE...WHICH IS 40 MILES NORTH OF LAFAYETTE.
.
AN ISOLATED THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED JUST
WEST OF LAFAYTTE. THIS THUNDERSTORM WILL MOVE TO NEAR NEAR ROSSVILLE
BY 615 PM EST. THIS STORM MAY PRODUCE SOME SMALL HAIL...ALONG WITH
GUSTY WINDS...AND FREQUENT LIGHTNING.

OTHER ISOLATED THUNDERSTORMS WERE NEAR CRAWFORDSVILLE INDIANA...AND
NEAR DANVILLE ILLINOIS.

ALL OF THE THUNDERSTORMS WERE MOVING EAST AT 30 MPH.
c
PEOPLE IN NORTHERN INDIANA SHOULD BE ALERT FOR RAPIDLY CHANGING
WEATHER CONDTIONS...AND BE PREPARED TO TAKE SHELTER IF THREATENING
WEATHER APPROACHES.

HARLEY
Special weather statement, May 30, 6:50 PM EDT, 2 hours 18 minutes before
INZALL-302345-

SPECIAL WEATHER STATEMENT...CORRECTED
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
542 PM EST THU MAY 30 1991

SEVERE THUNDERSTORM WARNINGS ARE IN EFFECT FOR SOUTHERN STARKE COUNTY
INDIDNA UNTIL 6 PM EST...AND KOSCUISKO COUNTY INDIANA UNTIL 545 PM EST.

A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 9 PM EST FOR THAT PART
OF INDIANA NORTH OF A LINE FROM 35 MILES NORTHWEST OF TERRE HAUTE TO
15 MILES NORTH OF RICHMOND.

SOME CITIES INCLUDED IN THE WATCH ARE SOUTH BEND...FORT WAYNE...KOKOMO
...LAFAYETTE...MUNCIE...PLYMOUTH AND LOGANSPORT.

AT 540 PM EST NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF
THUNDERSTORMS IN FAR NORTHERN INDIANA. THE THUNDERSTORMS EXTENDED
FROM 20 MILES NORTHEAST OF FORT WAYNE...TO 20 MILES SOUTH OF SOUTH BEND
...TO FRANCESVILLE...WHICH IS 40 MILES NORTH OF LAFAYETTE.
.
AN ISOLATED THUNDERSTORM WITH VERY HEAVY RAIN WAS LOCATED JUST
WEST OF LAFAYETTE. THIS THUNDERSTORM WILL MOVE TO NEAR ROSSVILLE
BY 615 PM EST. THIS STORM MAY PRODUCE SOME SMALL HAIL...ALONG WITH
GUSTY WINDS...AND FREQUENT LIGHTNING.

OTHER ISOLATED THUNDERSTORMS WERE NEAR CRAWFORDSVILLE INDIANA...AND
NEAR DANVILLE ILLINOIS.

ALL OF THE THUNDERSTORMS WERE MOVING EAST AiT 30 MPH.

PEOPLE IN NORTHERN INDIANA SHOULD BE ALERT FOR RAPIDLY CHANGING
WEATHER CONDTIONS...AND BE PREPARED TO TAKE SHELTER IF THREATENING
WEATHER APPROACHES.

HARLEY
...CORRECTED TYPOS...
Special weather statement, May 30, 7:29 PM EDT, 1 hour 39 minutes before
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Special weather statement, May 30, 8:40 PM EDT, 28 minutes before
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
      </p>
      <p id="message2">
        Please try again in a few minutes.
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The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 31, 5:16 PM EDTSevere Thunderstorm WarningINDLaPorte44 min
May 31, 6:16 PM EDTTornado WarningINDSaint Joseph29 min
May 31, 6:59 PM EDTSevere Thunderstorm WarningINDLaPorte31 min
May 31, 7:40 PM EDTSevere Thunderstorm WarningINDLaPorte, Starke50 min
May 31, 7:42 PM EDTFlash Flood WarningINDSaint Joseph2 hr
May 31, 5:21 PM EDTSevere Thunderstorm WarningINDBerrien54 min

Nearby

Severe Thunderstorm Warnings in Michigan, 1991Every severe thunderstorm warning in 1991

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.