Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 94, NWS Des Moines, IA

July 31, 1995Greene County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 31, 1995, 1:01 PM CDT for Greene County, Iowa. It was in force for 34 min.

The area

The counties it named.

The facts

Issued
Jul 31, 1995, 1:01 PM CDT (18:01 UTC)
Expired
Jul 31, 1995, 1:35 PM CDT
In force
34 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Greene County, IA

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 6.0 hours before the alert went out and 182 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, Omaha, NE at 12:00Z on 1995-07-31Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 905 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, Omaha, NE at 12:00Z on 1995-07-31The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 92 square meters per square second.1939Sfc1 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
905 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
1421 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
92 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.6

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDSM 311759 RRA
SVRDSM
IAC073-311835-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
101 PM CDT MON JUL 31 1995

* SEVERE THUNDERSTORM WARNING FOR
  GREENE COUNTY - WEST CENTRAL IOWA

* UNTIL 135 PM CDT
 
* SOME TOWNS AFFECTED
    JEFFERSON
    FARLIN
    GRAND JUNCTION

* AT 1256 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM 60 MILES
  NORTHWEST OF DES MOINES OR 5 MILES EAST OF COON RAPIDS MOVING
  NORTHEAST AT 25 MPH.

* THE STORM WILL BE IN JEFFERSON BY 115 PM.

THIS IS A DANGEROUS STORM.  DO NOT GO OUTDOORS.




KUBINA

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 1:55 PM CDTSevere Thunderstorm WarningDMXBoone20 min
Jul 31, 2:10 PM CDTSevere Thunderstorm WarningDMXBoone30 min
Jul 31, 3:52 PM CDTSevere Thunderstorm WarningDMXGrundy53 min
Jul 31, 4:10 PM CDTSevere Thunderstorm WarningDMXUnion50 min
Jul 31, 4:11 PM CDTSevere Thunderstorm WarningDMXUnion19 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.