Alert archive / Iowa / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 54, NWS Des Moines, IA

May 24, 1996Mahaska County, Marion County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at May 24, 1996, 11:08 AM CDT for Mahaska County, Marion County, Iowa. It was in force for 47 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 24, 1996, 11:08 AM CDT (16:08 UTC)
Expired
May 24, 1996, 11:55 AM CDT
In force
47 min
Issued by
NWS Des Moines, IA
Area
Whole counties

Counties Mahaska County, IA, Marion County, IA

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 4.1 hours before the alert went out and 200 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, Davenport, at 12:00Z on 1996-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Davenport, at 12:00Z on 1996-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 352 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
710 m above ground
0-6 km bulk shear
57 kt
0-1 km storm-relative helicity
352 m²/s²
0-3 km storm-relative helicity
374 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.4

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 24, 9:03 AM CDT, 2 hours 5 minutes before
IAZ074-075-241440-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
903 AM CDT FRI MAY 24 1996

THE SEVERE THUNDERSTORM WARNING FOR NORTHEAST MARION AND NORTHERN
MAHASKA COUNTIES HAS BEEN CANCELLED.  THE STORM HAS WEAKEN.
NUMEROUS REPORTS WERE RECEIVED FROM NORTHEAST MARION COUNTY.

THREE MILES SOUTHWEST OF PELLA 3/4 TO 1 INCH HAIL...5 MILES NORTH OF
KNOXVILLE GOLFBALL SIZED HAIL...KNIA RADIO IN PELLA REPORTED ONE
INCH HAIL...AND 3.5 MILES NORTHEAST OF KNOXVILLE REPORTED ONE INCH
HAIL.

FORSTER
Special weather statement, May 24, 9:26 AM CDT, 1 hour 42 minutes before
IAZALL-241400-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
925 AM CDT FRI MAY 24 1996

STRONG WINDS WERE BEING REPORTED IN PARTS OF NORTHWEST AND NORTH
CENTRAL IOWA.  IT APPEARS THAT STRONG WINDS ALOFT ARE BEING
TRANSPORTED DOWN TO THE SURFACE.

REPORTS OF 55 TO 60 MPH WINDS WERE REPORTED IN POCAHONTAS...CLAY
AND PALO ALTO COUNTIES.

PEOPLE IN SOUTHERN KOSSUTH...HUMBOLDT...NORTHEN WEBSTER CAN EXPECT
THESE STRONG SURFACE WINDS BETWEEN 930 AND 1030 AM CDT.

FORSTER
Special weather statement, May 24, 10:23 AM CDT, 45 minutes before
IAZ074-241600-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
1024 AM CDT FRI MAY 24 1996

THE SEVERE THUNDERSTORM WARNING FOR SOUTHEAST MARION COUNTY HAS
EXPIRED.  THE STORM HAS MOVED INTO MAHASKA WHERE NUMEROUS REPORTS OF
LARGE HAIL UP TO TENNIS BALL SIZE.  HOWEVER THE STORM WAS OUT OF
MARION COUNTY.

FORSTER
Special weather statement, May 24, 11:00 AM CDT, 8 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 8:31 AM CDTSevere Thunderstorm WarningDMXMahaska, Marion34 min
May 24, 9:17 AM CDTSevere Thunderstorm WarningDMXMahaska48 min
May 24, 9:45 AM CDTSevere Thunderstorm WarningDMXMarion35 min
May 24, 9:54 AM CDTSevere Thunderstorm WarningDMXMahaska31 min
May 24, 10:28 AM CDTSevere Thunderstorm WarningDMXMahaska32 min

Nearby

Severe Thunderstorm Warnings in Iowa, 1996Every severe thunderstorm warning in 1996

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.