Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 86, NWS Des Moines, IA

July 27, 1995Mitchell County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 27, 1995, 11:35 AM CDT for Mitchell County, Iowa. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Jul 27, 1995, 11:35 AM CDT (16:35 UTC)
Expired
Jul 27, 1995, 12:00 PM CDT
In force
25 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Mitchell County, IA

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 4.6 hours before the alert went out and 178 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 1995-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 467 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 12:00Z on 1995-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 163 square meters per square second.1939587897117Sfc1 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
467 J/kg
Mixed-layer CIN
-305 J/kg
Mixed-layer LCL
1285 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
163 m²/s²
0-3 km storm-relative helicity
239 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KALO 271637 RRA
SVRALO
IAC131-271700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WATERLOO IA
1135 AM CDT THU JUL 27 1995
 
THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL NOON CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTH CENTRAL IOWA
 
   ...NORTHERN MITCHELL COUNTY
 
AT 1135AM...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM 5 MILES NORTH OF ST. ANSGAR OR 25 MILES NORTHEAST OF MASON
CITY. THIS STORM IS MOVING EAST AT 30 MPH AND WILL AFFECT THE
COMMUNITIES OF ST. ANSGAR...OTRANTO...TOETERVILLE AND STACYVILLE.
 
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A REINFORCED BUILDING.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.
DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY
LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
 
 
COGIL

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, Jul 27, 10:10 AM CDT, 1 hour 25 minutes before
IAZALL-271800-

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
1010 AM CDT THU JUL 27 1995

HAZARD...SEVERE THUNDERSTORMS PRODUCING HAIL AND HIGH WINDS.

AREAS OF CONCERN...NORTHEAST IOWA...NORTH OF A LINE FROM FROM MASON CITY
TO OLEWEIN...TO DUBUQUE.

TIMING DETAILS...DURING THE NEXT 2 HOURS THUNDERSTORMS OVER SOUTHERN
MINNESOTA WILL BUILD SOUTH INTO IOWA.

METEOROLOGICAL COMMENTS...A STRONG STORM SYSTEM...FOR JULY...IS MOVING
THROUGH THE UPPER MIDWEST.  THUNDERSTORMS IN SOUTH CENTRAL MINNESOTA
WILL MOVE SOUTH ALONG A WARM FRONT INTO NORTHEAST IOWA DURING THE NEXT
2 HOURS.  THUNDERSTORMS ARE ALSO EXPECTED TO DEVELOP IN WESTERN IOWA
AROUND MIDDAY AHEAD OF A COLD FRONT MOVING INTO THE STATE.
PRECAUTIONS...PEOPLE IN NORTHEAST IOWA...ESPECIALLY THOSE BORDERING
MINNESOTA SHOULD BE ON THE LOOKOUT FOR SEVERE WEATHER DURING THE LATE
MORNING HOURS.

TIMING OF THUDERSTORMS OVER WESTERN IOWA IS MORE UNCERTAIN.  RIGHT NOW
THE BEST CHANCE APPEARS TO BE AROUND MIDDAY.  PEOPLE IN THIS AREA
SHOULD CONTINUE TO MONITOR LATER STATEMENTS.

THE NEXT OUTLOOK WILL BE ISSUED AROUND NOON...UNLESS A WATCH OR WARNING
IS ISSUED.

 BELLES
Special weather statement, Jul 27, 10:11 AM CDT, 1 hour 24 minutes before
IAZALL-271800-

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
1010 AM CDT THU JUL 27 1995

HAZARD...SEVERE THUNDERSTORMS PRODUCING HAIL AND HIGH WINDS.

AREAS OF CONCERN...NORTHEAST IOWA...NORTH OF A LINE FROM FROM MASON CITY
TO OLEWEIN...TO DUBUQUE.

TIMING DETAILS...DURING THE NEXT 2 HOURS THUNDERSTORMS OVER SOUTHERN
MINNESOTA WILL BUILD SOUTH INTO IOWA.

METEOROLOGICAL COMMENTS...A STRONG STORM SYSTEM...FOR JULY...IS MOVING
THROUGH THE UPPER MIDWEST.  THUNDERSTORMS IN SOUTH CENTRAL MINNESOTA
WILL MOVE SOUTH ALONG A WARM INTO NORTHEAST IOWA DURING THE NEXT
2 HOURS.  THUNDERSTORMS ARE ALSO EXPECTED TO DEVELOP IN WESTERN IOWA
AROUND MIDDAY AHEAD OF A COLD FRONT MOVING INTO THE STATE.
PRECAUTIONS...PEOPLE IN NORTHEAST IOWA...ESPECIALLY THOSE BORDERING
MINNESOTA SHOULD BE ON THE LOOKOUT FOR SEVERE WEATHER DURING THE LATE
MORNING HOURS.

TIMING OF THUDERSTORMS OVER WESTERN IOWA IS MORE UNCERTAIN.  RIGHT NOW
THE BEST CHANCE APPEARS TO BE AROUND MIDDAY.  PEOPLE IN THIS AREA
SHOULD CONTINUE TO MONITOR LATER STATEMENTS.

THE NEXT OUTLOOK WILL BE ISSUED AROUND NOON...UNLESS A WATCH OR WARNING
IS ISSUED.

 BELLES
Special weather statement, Jul 27, 10:18 AM CDT, 1 hour 17 minutes before
IAZALL-271800-

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
1010 AM CDT THU JUL 27 1995

HAZARD...SEVERE THUNDERSTORMS PRODUCING HAIL AND HIGH WINDS.

AREAS OF CONCERN...NORTHEAST IOWA...NORTH OF A LINE FROM FROM MASON CITY
TO OLEWEIN...TO DUBUQUE.

TIMING DETAILS...DURING THE NEXT 2 HOURS THUNDERSTORMS OVER SOUTHERN
MINNESOTA WILL BUILD SOUTH INTO IOWA.

METEOROLOGICAL COMMENTS...A STRONG STORM SYSTEM...FOR JULY...IS MOVING
THROUGH THE UPPER MIDWEST.  THUNDERSTORMS IN SOUTH CENTRAL MINNESOTA
WILL MOVE SOUTH ALONG A WARM FRONT INTO NORTHEAST IOWA DURING THE NEXT
2 HOURS.  THUNDERSTORMS ARE ALSO EXPECTED TO DEVELOP IN WESTERN IOWA
AROUND MIDDAY AHEAD OF A COLD FRONT MOVING INTO THE STATE.
PRECAUTIONS...PEOPLE IN NORTHEAST IOWA...ESPECIALLY THOSE BORDERING
MINNESOTA SHOULD BE ON THE LOOKOUT FOR SEVERE WEATHER DURING THE LATE
MORNING HOURS.

TIMING OF THUDERSTORMS OVER WESTERN IOWA IS MORE UNCERTAIN.  RIGHT NOW
THE BEST CHANCE APPEARS TO BE AROUND MIDDAY.  PEOPLE IN THIS AREA
SHOULD CONTINUE TO MONITOR LATER STATEMENTS.

THE NEXT OUTLOOK WILL BE ISSUED AROUND NOON...UNLESS A WATCH OR WARNING
IS ISSUED.

 BELLES

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 27, 11:49 AM CDTSevere Thunderstorm WarningDMXWorth26 min
Jul 27, 12:03 PM CDTSevere Thunderstorm WarningDMXMitchell27 min
Jul 27, 12:25 PM CDTSevere Thunderstorm WarningDMXMitchell50 min
Jul 27, 12:36 PM CDTSevere Thunderstorm WarningDMXHoward39 min
Jul 27, 1:52 PM CDTSevere Thunderstorm WarningDMXChickasaw, Fayette, Winneshiek38 min
Jul 27, 2:18 PM CDTSevere Thunderstorm WarningDMXAllamakee93 min
Jul 27, 2:44 PM CDTSevere Thunderstorm WarningDMXFayette46 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1995Every severe thunderstorm warning in 1995

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.