Alert archive / Iowa / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 45, NWS Des Moines, IA

May 19, 1996Marshall County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at May 19, 1996, 6:03 PM CDT for Marshall County, Iowa. It was in force for 32 min. 2 reports 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 19, 1996, 6:03 PM CDT (23:03 UTC)
Expired
May 19, 1996, 6:35 PM CDT
In force
32 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Marshall County, IA

What was reported inside it

TimeReportWhereRemark
May 19, 6:16 PM CDTThunderstorm Wind 52State Center, IA
May 19, 6:30 PM CDTTornado F0Le Grand, 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.1 hours before the alert went out and 212 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 1996-05-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 385 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, Davenport, at 12:00Z on 1996-05-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 297 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
385 J/kg
Mixed-layer CIN
-532 J/kg
Mixed-layer LCL
913 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
297 m²/s²
0-3 km storm-relative helicity
259 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDSM 192304
SVRDSM
IAC127-192335-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
603 PM CDT SUN MAY 19 1996

* SEVERE THUNDERSTORM WARNING FOR
  NORTHWESTERN MARSHALL COUNTY - CENTRAL IOWA

* UNTIL 635 PM CDT
 
* SOME LOCATIONS AFFECTED
    ST. ANTHONY
    CLEMONS
    LISCOMB

* AT 601 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM ST. ANTHONY OR
  ABOUT 50 MILES NORTHEAST OF DES MOINES MOVING NORTHEApST AT 30 MPH.

* THE STORM WILL BE IN CLEMONS BY 605 PM CDT.

THIS IS A DANGEROUS STORM.  DO NOT GO OUTDOORS.

 A TORNADO WATCH IS ALSO IN EFFECT.  SEVERE THUNDERSTORMS CAN
PRODUCE TORNADOES.


FAB

The office that day

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

IssuedProductOfficeCountiesLasted
May 19, 1:23 AM CDTSevere Thunderstorm WarningDMXKossuth22 min
May 19, 2:40 AM CDTSevere Thunderstorm WarningDMXHoward35 min
May 19, 3:13 AM CDTSevere Thunderstorm WarningDMXWinneshiek32 min
May 19, 5:32 PM CDTSevere Thunderstorm WarningDMXBremer33 min
May 19, 5:54 PM CDTSevere Thunderstorm WarningDMXFayette51 min
May 19, 6:12 PM CDTSevere Thunderstorm WarningDMXBlack Hawk33 min
May 19, 6:24 PM CDTSevere Thunderstorm WarningDMXMarshall31 min
May 19, 6:58 PM CDTSevere Thunderstorm WarningDMXTama32 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.