Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 104, NWS Des Moines, IA

August 28, 1995Worth County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Aug 28, 1995, 5:05 PM CDT for Worth County, Iowa. It was in force for 35 min.

The area

The counties it named.

The facts

Issued
Aug 28, 1995, 5:05 PM CDT (22:05 UTC)
Expired
Aug 28, 1995, 5:40 PM CDT
In force
35 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Worth County, IA

The radar

The Minneapolis radar (KMPX), 165 km from the middle of the area, began a volume at 22:09 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.1 hours before the alert went out and 166 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, Minneapolis, MN at 12:00Z on 1995-08-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1431 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, Minneapolis, MN at 12:00Z on 1995-08-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 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
1431 J/kg
Mixed-layer CIN
-242 J/kg
Mixed-layer LCL
1252 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
43 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KDSM 282205 RRA
SVRDSM
IAC195-282240-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
505 PM CDT MON AUG 28 1995

* SEVERE THUNDERSTORM WARNING FOR
  WORTH COUNTY - NORTH CENTRAL IOWA

* UNTIL 540 PM CDT
 
* SOME TOWNS AFFECTED
    KENSETT
    MANLY
    HANLONTOWN

* AT 503 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM BETWEEN KENSETT
  AND HANLONTOWN...20 MILES NORTHWEST OF MASON CITY MOVING EAST AT 25
$  MPH.

* THE STORM WILL BE NEAR MANLY AT 515 PM.

THIS IS A DANGEROUS STORM.  DO NOT GO OUTDOORS.

KULA

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 28, 5:19 PM CDTSevere Thunderstorm WarningDMXHancock31 min
Aug 28, 5:25 PM CDTSevere Thunderstorm WarningDMXKossuth31 min
Aug 28, 5:28 PM CDTSevere Thunderstorm WarningDMXAllamakee, Winneshiek30 min
Aug 28, 6:18 PM CDTSevere Thunderstorm WarningDMXCerro Gordo17 min
Aug 28, 6:52 PM CDTSevere Thunderstorm WarningDMXChickasaw33 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; radar from the NEXRAD Level II archive.