Alert archive / Iowa / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 82, NWS Des Moines, IA

May 24, 1989Johnson County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at May 24, 1989, 10:28 PM CDT for Johnson County, Iowa. It was in force for 32 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 24, 1989, 10:28 PM CDT (03:28 UTC)
Expired
May 24, 1989, 11:00 PM CDT
In force
32 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Johnson County, IA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

TimeReportWhereRemark
May 24, 10:30 PM CDTThunderstorm Wind 52Johnson, IA

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

Peoria Regional, IL (KPIA), launched 00:00Z, 3.5 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, Peoria Regional, IL at 00:00Z on 1989-05-25Temperature 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, Peoria Regional, IL at 00:00Z on 1989-05-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 230 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
48 kt
0-1 km storm-relative helicity
230 m²/s²
0-3 km storm-relative helicity
347 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.9

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, 8:21 PM CDT, 2 hours 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
750 PM CDT WED MAY 24 1989

      ...PORTIONS OF TORNADO WATCH DISCONTINUED...

THE FOLLOWING COUNTIES ARE NO LONGER IN THE TORNADO WATCH...
CARROLL...GREENE...AUDUBON...GUTHRIE...CASS...ADAIR.

CORBETT
Special weather statement, May 24, 8:27 PM CDT, 2 hours 1 minute before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
825 PM CDT WED MAY 24 1989

      ...PORTIONS OF TORNADO WATCH DISCONTINUED...

THE FOLLOWING COUNTIES ARE NO LONGER IN THE TORNADO WATCH...
MONTGOMERY...ADAMS...FREMONT...PAGE...TAYLOR.

CORBETT
Special weather statement, May 24, 8:48 PM CDT, 1 hour 40 minutes before
SPECIAL WEATHER STATEMENT AND RADAR SUMMARY
NATIONAL WEATHER SERVICE DES MOINES IA
847 PM CDT WED MAY 24 1989

...TORNADO WATCH IS IN EFFECT FOR MOST OF IOWA UNTIL 10 PM...

AT 835 PM...INTENSE THUNDERSTORMS WERE LOCATED IN TWO GENERAL
AREA. THE FIRST AREA WAS AN ELONGATED COMPLEX OF STORMS OVER
SOUTH CENTRAL IOWA...FROM ABOUT 30 MILES SOUTH SOUTHEAST OF
DES MOINES NEAR CHARITON SOUTHWEST TO JUST EAST OF LAMONI. THE
SECOND AREA EXTENDED FROM CENTRAL INTO NORTHEAST IOWA...FROM 30
MILES EAST OF DES MOINES NEAR NEWTON NORTHEAST TO 5 MILES SOUTH
OF WATERLOO. ANOTHER INTENSE STORM WAS LOCATED 15 MILES WEST OF
WATERLOO.

THESE STORMS WERE PART OF A LARGE BAND OF STORMS THAT WAS ABOUT 60
MILES WIDE AND EXTENDED FROM LAMONI...IN SOUTH CENTRAL IOWA TO THE
NORTHEAST CORNER OF THE STATE...NORTH OF DECORAH. THIS AREA EXTENDED
INTO ADJACENT AREAS OF SOUTHEAST MINNESOTA AND NORTH CENTRAL MISSOURI.

THE SHOWERS AND STORMS WERE MOVING EAST AT 40 M"ILES AN HOUR OVER THE
NORTHEAST COUNTIES AND OVER THE CENTRAL AND SOUTH CENTRAL COUNTIES
MOVEMENT WAS EAST AT 35 MILES AN HOUR.

BARLOW/GOODSON
Special weather statement, May 24, 9:09 PM CDT, 1 hour 19 minutes before
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Special weather statement, May 24, 9:40 PM CDT, 48 minutes before
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Local storm report, May 24, 9:50 PM CDT, 38 minutes before
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  <link rel="stylesheet" href="index.css">
</head>
<body>
  <main class="wrap">
    <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>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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The office that day

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

IssuedProductOfficeCountiesLasted
May 24, 7:06 PM CDTTornado WarningDMXHardin, Story39 min
May 24, 7:38 PM CDTTornado WarningDMXDecatur67 min
May 24, 7:47 PM CDTSevere Thunderstorm WarningDMXClarke58 min
May 24, 7:49 PM CDTSevere Thunderstorm WarningDMXMarshall26 min
May 24, 7:55 PM CDTSevere Thunderstorm WarningDMXMitchell50 min
May 24, 7:58 PM CDTTornado WarningDMXMarshall45 min
May 24, 8:10 PM CDTTornado WarningDMXPoweshiek, Tama50 min
May 24, 8:30 PM CDTSevere Thunderstorm WarningDMXFloyd, Howard60 min
May 24, 8:31 PM CDTSevere Thunderstorm WarningDMXAppanoose, Lucas, Monroe, Wayne59 min
May 24, 8:46 PM CDTTornado WarningDMXChickasaw, Fayette, Winneshiek29 min
May 24, 8:49 PM CDTTornado WarningDMXBenton, Iowa56 min
May 24, 9:07 PM CDTSevere Thunderstorm WarningDMXDavis68 min
May 24, 9:12 PM CDTSevere Thunderstorm WarningDMXPoweshiek23 min
May 24, 9:24 PM CDTSevere Thunderstorm WarningDMXJohnson, Linn66 min
May 24, 9:48 PM CDTSevere Thunderstorm WarningDMXIowa27 min
May 24, 10:14 PM CDTSevere Thunderstorm WarningDMXWashington46 min
May 24, 10:41 PM CDTTornado WarningDMXJohnson, Washington23 min

Nearby

Severe Thunderstorm Warnings in Iowa, 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.