Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 49, NWS Des Moines, IA

June 7, 1995Winneshiek County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 7, 1995, 4:09 PM CDT for Winneshiek County, Iowa. It was in force for 51 min.

The area

The counties it named.

The facts

Issued: Jun 7, 1995, 4:09 PM CDT (21:09 UTC)
Expired: Jun 7, 1995, 5:00 PM CDT
In force: 51 min
Issued by: NWS Des Moines, IA
Area: Whole counties

County Winneshiek County, IA

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 9.2 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1880 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 625 m above ground
0-6 km bulk shear: 24 kt
0-1 km storm-relative helicity: 128 m²/s²
0-3 km storm-relative helicity: 127 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.3

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KALO 072110 RRA
SVRALO
IAC191-072200-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WATERLOO IA
409 PM CDT WED JUN 7 1995
 
THE NATIONAL WEATHER SERVICE IN WATERLOO HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST IOWA
 
   ...NORTHERN WINNESHIEK COUNTY
 
AT 409 PM CDT...NATIONAL WEATHER SERVICE RADAR IN WATERLOO INDICATED A
SEVERE THUNDERSTORM ALONG THE IOWA MINNESOTA BORDER 20 MILES NORTH OF
DECORAH. THIS STORM IS MOVING SOUTHEAST AT 25 MILES AN HOUR AND WILL
AFFECT THE COMMUNITIES OF BURR OAK...BLUFFTON...AND KENDALVILLE.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER IN A REINFORCED BUIpLDING.
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.
 
 
 
KAUFMAN

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 7, 12:00 PM CDT, 4 hours 9 minutes before

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
1200 PM CDT WED JUN 7 1995

    HAZARD...
    SEVERE THUNDERSTORM DEVELOPMENT PRODUCING LARGE HAIL AND DAMAGING
    WINDS IN EXCESS OF 60 MPH.

    AREA OF CONCERN...
    THE SOUTHERN TWO TIERS OF COUNTIES.

    TIMING DETAILS...
    SEVERE THUNDERSTORM DEVELOPMENT IS POSSIBLE OVER THE SOUTHWEST
    CORNER OF THE STATE BETWEEN 4 AND 7 PM. THESE STORMS WILL SPREAD
    EAST AND SOUTH THROUGH THE EVENING HOURS.

    METEOROLOGICAL COMMENTS...
    THE THUNDERSTORM ACTIVITY FROM THIS MORNING HAD EXITED EASTERN
    IOWA BY NOON. THIS SYSTEM HAS REDUCED THE THREAT OF THUNDERSTORM
    DEVELOPMENT THIS AFTERNOON.

    A COLD FRONT OVER NORTHWEST IOWA WILL DRIVE ACROSS THE STATE
    THROUGH 5 PM TRIGGERING THUNDERSTORM DEVELOPMENT FROM COUNCIL
    BLUFFS TO DES MOINES TO CHARLES CITY AFTER 6 PM. THE MOST FAVORED
    AREA OF SEVERE THUNDERSTORM FORMATION WILL BE IN THE SOUTHWEST
    CORNER OF THE STATE AFTER 6 PM.

    THERE IS ABUNDANT MOISTURE CREATING FAVORABLE CONDITIONS FOR THE
    DEVELOPMENT OF VERY HEAVY RAIN WITH THESE STORMS.

    PRECAUTIONS...
    EMERGENCY MANAGERS ACROSS SOUTHERN IOWA...ESPECIALLY SOUTHWEST AND
    SOUTH CENTRAL IOWA...SHOULD CONSIDER THE INITIATION OF
    PREPAREDNESS EFFORTS. THE THUNDERSTORMS THIS EVENING AND DURING
    THE OVERNIGHT HOURS WILL HAVE THE POTENTIAL TO PRODUCE PERIODS OF
    VERY HEAVY RAIN...IN EXCESS OF 2 INCHES...IN A VERY SHORT TIME
    PERIOD. SPOTTER ACTIVATION IS LIKELY DURING THE EARLY EVENING
    HOURS.

    LEWIS

Special weather statement, Jun 7, 12:03 PM CDT, 4 hours 6 minutes before

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
1200 PM CDT WED JUN 7 1995

    HAZARD...
    SEVERE THUNDERSTORM DEVELOPMENT PRODUCING LARGE HAIL AND DAMAGING
    WINDS IN EXCESS OF 60 MPH.

    AREA OF CONCERN...
    THE SOUTHERN TWO TIERS OF COUNTIES.

    TIMING DETAILS...
    SEVERE THUNDERSTORM DEVELOPMENT IS POSSIBLE OVER THE SOUTHWEST
    CORNER OF THE STATE BETWEEN 4 AND 7 PM. THESE STORMS WILL SPREAD
    EAST AND SOUTH THROUGH THE EVENING HOURS.

    METEOROLOGICAL COMMENTS...
    THE THUNDERSTORM ACTIVITY FROM THIS MORNING HAD EXITED EASTERN
    IOWA BY NOON. THIS SYSTEM HAS REDUCED THE THREAT OF THUNDERSTORM
    DEVELOPMENT THIS AFTERNOON.

    A COLD FRONT OVER NORTHWEST IOWA WILL DRIVE ACROSS THE STATE
    THROUGH 5 PM TRIGGERING THUNDERSTORM DEVELOPMENT FROM COUNCIL
    BLUFFS TO DES MOINES TO CHARLES CITY AFTER 6 PM. THE MOST FAVORED
    AREA OF SEVERE THUNDERSTORM FORMATION WILL BE IN THE SOUTHWEST
    CORNER OF THE STATE AFTER 6 PM.

    THERE IS ABUNDANT MOISTURE CREATING FAVORABLE CONDITIONS FOR THE
    DEVELOPMENT OF VERY HEAVY RAIN WITH THESE STORMS.

    PRECAUTIONS...
    EMERGENCY MANAGERS ACROSS SOUTHERN IOWA...ESPECIALLY SOUTHWEST AND
    SOUTH CENTRAL IOWA...SHOULD CONSIDER THE INITIATION OF
    PREPAREDNESS EFFORTS. THE THUNDERSTORMS THIS EVENING AND DURING
    THE OVERNIGHT HOURS WILL HAVE THE POTENTIAL TO PRODUCE PERIODS OF
    VERY HEAVY RAIN...IN EXCESS OF 2 INCHES...IN A VERY SHORT TIME
    PERIOD. SPOTTER ACTIVATION IS LIKELY DURING THE EARLY EVENING
    HOURS.

    LEWIS

Special weather statement, Jun 7, 2:45 PM CDT, 1 hour 24 minutes before

IAZALL-072200-

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
245 PM CDT WED JUN 7 1995

HAZARD...
WIDELY SCATTERED SEVERE THUNDERSTORMS PRODUCING LARGE HAIL AND
DAMAGING WINDS IN EXCESS OF 60 MPH.

AREA OF CONCERN...
THE SOUTHWEST QUARTER OF IOWA...SOUTHWEST OF A COUNCIL BLUFFS TO
CENTERVILLE LINE.

TIMING DETAILS...
SEVERE THUNDERSTORM DEVELOPMENT IS POSSIBLE OVER THE SOUTHWEST CORNER
OF THE STATE BETWEEN 4 AND 7 PM. THESE STORMS WILL SPREAD EAST AND
SOUTH AS THE EVENING PROGRESSES.

METEOROLOGICAL COMMENTS...
A COLD FRONT EXTENDS FROM ALGONA TO NEAR ONAWA AT 200 PM. THE
ATMOSPHERE HAS RECOVERED SOMEWHAT AFTER THUNDERSTORMS MOVED THROUGH
THE STATE OVERNIGHT. THE BEST INSTABILITY RESIDES OVER FAR SOUTHWEST
IOWA...WHERE THE HIGHEST RISK OF SEVERE WEATHER EXISTS. HIGH
HUMIDITIES MEANS THE THREAT OF HEAVY RAIN IS HIGH WITH ANY
THUNDERSTORMS THAT OCCUR.

PRECAUTIONS...
EMERGENCY MANAGERS ACROSS SOUTHERN IOWA...ESPECIALLY SOUTHWEST AND
SOUTH CENTRAL IOWA...SHOULD CONTINUE TO MONITOR THIS SITUATION
CLOSELY. THE THUNDERSTORMS THIS EVENING AND DURING THE OVERNIGHT HOURS
WILL HAVE THE POTENTIAL TO PRODUCE PERIODS OF HEAVY RAIN...IN EXCESS
OF 1 INCH...IN A SHORT TIME PERIOD. SPOTTER ACTIVATION MAY BE REQUIRED
DURING THE EARLY EVENING HOURS.

PYTLAK

Special weather statement, Jun 7, 2:46 PM CDT, 1 hour 23 minutes before

IAZALL-072200-

IOWA SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE DES MOINES IOWA
245 PM CDT WED JUN 7 1995

HAZARD...
WIDELY SCATTERED SEVERE THUNDERSTORMS PRODUCING LARGE HAIL AND
DAMAGING WINDS IN EXCESS OF 60 MPH.

AREA OF CONCERN...
THE SOUTHWEST QUARTER OF IOWA...SOUTHWEST OF A COUNCIL BLUFFS TO
CENTERVILLE LINE.

TIMING DETAILS...
SEVERE THUNDERSTORM DEVELOPMENT IS POSSIBLE OVER THE SOUTHWEST CORNER
OF THE STATE BETWEEN 4 AND 7 PM. THESE STORMS WILL SPREAD EAST AND
SOUTH AS THE EVENING PROGRESSES.

METEOROLOGICAL COMMENTS...
A COLD FRONT EXTENDS FROM ALGONA TO NEAR ONAWA AT 200 PM. THE
ATMOSPHERE HAS RECOVERED SOMEWHAT AFTER THUNDERSTORMS MOVED THROUGH
THE STATE OVERNIGHT. THE BEST INSTABILITY RESIDES OVER FAR SOUTHWEST
IOWA...WHERE THE HIGHEST RISK OF SEVERE WEATHER EXISTS. HIGH
HUMIDITIES MEANS THE THREAT OF HEAVY RAIN IS HIGH WITH ANY
THUNDERSTORMS THAT OCCUR.

PRECAUTIONS...
EMERGENCY MANAGERS ACROSS SOUTHERN IOWA...ESPECIALLY SOUTHWEST AND
SOUTH CENTRAL IOWA...SHOULD CONTINUE TO MONITOR THIS SITUATION
CLOSELY. THE THUNDERSTORMS THIS EVENING AND DURING THE OVERNIGHT HOURS
WILL HAVE THE POTENTIAL TO PRODUCE PERIODS OF HEAVY RAIN...IN EXCESS
OF 1 INCH...IN dA SHORT TIME PERIOD. SPOTTER ACTIVATION MAY BE REQUIRED
DURING THE EARLY EVENING HOURS.

PYTLAK

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 6, 7:00 PM CDT	Severe Thunderstorm Warning	DMX	Winnebago	30 min
Jun 6, 7:03 PM CDT	Severe Thunderstorm Warning	DMX	Cerro Gordo	32 min
Jun 6, 7:18 PM CDT	Tornado Warning	DMX	Cerro Gordo	32 min
Jun 6, 7:33 PM CDT	Tornado Warning	DMX	Franklin	32 min
Jun 6, 7:45 PM CDT	Severe Thunderstorm Warning	DMX	Floyd	35 min
Jun 6, 8:04 PM CDT	Tornado Warning	DMX	Franklin	31 min
Jun 6, 8:22 PM CDT	Severe Thunderstorm Warning	DMX	Wright	33 min
Jun 6, 8:35 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Hardin	30 min
Jun 6, 11:25 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton	35 min
Jun 7, 3:14 AM CDT	Severe Thunderstorm Warning	DMX	Emmet	46 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1995 Every 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.