Alert archive / Iowa / Severe Thunderstorm Warnings in 1995

Severe Thunderstorm Warning 77, NWS Des Moines, IA

July 19, 1995Tama County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jul 19, 1995, 3:49 PM CDT for Tama County, Iowa. It was in force for 26 min.

The area

The counties it named.

The facts

Issued
Jul 19, 1995, 3:49 PM CDT (20:49 UTC)
Expired
Jul 19, 1995, 4:15 PM CDT
In force
26 min
Issued by
NWS Des Moines, IA
Area
Whole counties

County Tama County, IA

The radar

The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 20:51 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

Davenport, (KDVN), launched 12:00Z, 8.8 hours before the alert went out and 176 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 1995-07-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 17 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 1995-07-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 54 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
17 J/kg
Mixed-layer CIN
-93 J/kg
Mixed-layer LCL
1356 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
54 m²/s²
0-3 km storm-relative helicity
48 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 
WUUS1 KDSM 192049
SVRDSM
IAC171-192115-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
349 PM CDT WED JUL 19 1995

* SEVERE THUNDERSTORM WARNING FOR
  NORTHERN TAMA COUNTY - CENTRAL IOWA

* UNTIL 415 PM CDT
 
* SOME TOWNS AFFECTED
    DINSDALE
    BUCKINGHAM
    TRAER

* AT 345 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM NEAR
  DINSDALE...OR 15 MILES SOUTH OF WATERLOO MOVING EAST TO SOUTHEAST AT
  25 MILES AN HOUR.

* THE STORM WILL BE NEAR BUCKINGHAM BY 400 PM CDT.

THIS IS A DANGEROUS STORM.  DO NOT GO OUTDOORS.




BELLES/JOHNSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 19, 2:58 PM CDTSevere Thunderstorm WarningDMXGrundy32 min
Jul 19, 3:03 PM CDTTornado WarningDMXGrundy27 min
Jul 19, 3:22 PM CDTTornado WarningDMXTama23 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.