Alert archive / Iowa / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 56, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jul 4, 1995, 5:08 PM CDT for Union County, Iowa. It was in force for 12 min.
The area
The counties it named.
The facts
- Issued
- Jul 4, 1995, 5:08 PM CDT (22:08 UTC)
- Expired
- Jul 4, 1995, 5:20 PM CDT
- In force
- 12 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Union County, IA
The radar
The Des Moines radar (KDMX), 89 km from the middle of the area, began a volume at 22:12 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
Omaha, NE (KOAX), launched 12:00Z, 10.1 hours before the alert went out and 181 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 651 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 65 m²/s²
- 0-3 km storm-relative helicity
- 53 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KDSM 042204 RRA
SVRDSM
IAC175-042220-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
508 PM CDT TUE JUL 4 1995
* SEVERE THUNDERSTORM WARNING FOR
EASTERN UNION COUNTY - SOUTH CENTRAL IOWA
* UNTIL 520 PM CDT
* SOME TOWNS AFFECTED
THAYER
* AT 500 PM CDT RADAR INDICATED A SEVERE THUNDERSTORM THAYER...OR 45
SOUTHWEST OF DES MOINES MOVING NORTHEAST AT 40 MILES AN HOUR.
* THE STORM WILL BE AT THAYER BY 510 PM CDT.
THIS IS A DANGEROUS STORM. DO NOT GO OUTDOORS.
BELLES/MSWhat 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, Jul 4, 1:30 PM CDT, 3 hours 38 minutes before
IAZALL-050000- IOWA SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 130 PM CDT TUE JUL 4 1995 HAZARD...SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. LARGE HAIL AND AN ISOLATED TORNADO IS ALSO POSSIBLE. AREA OF CONCERN...ABOUT THE SOUTHEAST TWO-THIRDS OF IOWA...SOUTHEAST OF A LINE FROM MASON CITY TO OMAHA-COUNCIL BLUFFS. TIMING DETAILS...WIDELY SCATTERED THUNDERSTORMS WERE MOVING RAPIDLY NORTHEAST ACROSS EAST CENTRAL IOWA EARLY THIS AFTERNOON...BUT THESE ARE NOT EXPECTED TO BECOME SEVERE. SEVERE THUNDERSTORMS DEVELOPING OVER NORTHEAST KANSAS WILL RACE INTO SOUTHERN IOWA AFTER 600 PM AND INTO NORTHERN IOWA AFTER 1000 PM. METEOROLOGICAL COMMENTS...A FAST-MOVING SITUATION WAS SETTING AS AN UNUSUALLY STRONG STORM SYSTEM FOR THIS TIME OF YEAR ROTATES OVER SOUTHEAST SOUTH DAKOTA. EXTREMELY UNSTABLE AIR WAS LIFTING NORTH INTO IOWA FROM MISSOURI AND KANSAS...WHERE LIFTED INDICES WERE BELOW MINUS 10. VERY STRONG SOUTH WINDS OVER 60 MPH WERE INDICATED ABOUT 3000 FEET UP IN THE ATMOSPHERE...WHICH MAKES DAMAGING DOWNBURST WINDS THE MAIN THREAT. IF SOUTHEAST WINDS CONTINUE AT THE SURFACE OVER IOWA...THE THREAT OF TORNADOES MAY INCREASE. PRECAUTIONS...PEOPLE WHO HAVE OUTDOOR PLANS THIS EVENING...ALONG WITH COMMUNITIES HAVING FIREWORKS DISPLAYS...SHOULD MONITOR THIS SITUATION VERY CLOSELY THIS EVENING. SPOTTER ACTIVATION MAY BE REQUIRED AS WELL. PYTLAK
Special weather statement, Jul 4, 1:31 PM CDT, 3 hours 37 minutes before
IAZALL-050000- IOWA SEVERE WEATHER OUTLOOK NATIONAL WEATHER SERVICE DES MOINES IA 130 PM CDT TUE JUL 4 1995 HAZARD...SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. LARGE HAIL AND AN ISOLATED TORNADO IS ALSO POSSIBLE. AREA OF CONCERN...ABOUT THE SOUTHEAST TWO-THIRDS OF IOWA...SOUTHEAST OF A LINE FROM MASON CITY TO OMAHA-COUNCIL BLUFFS. TIMING DETAILS...WIDELY SCATTERED THUNDERSTORMS WERE MOVING RAPIDLY NORTHEAST ACROSS EAST CENTRAL IOWA EARLY THIS AFTERNOON...BUT THESE ARE NOT EXPECTED TO BECOME SEVERE. SEVERE THUNDERSTORMS DEVELOPING OVER NORTHEAST KANSAS WILL RACE INTO SOUTHERN IOWA AFTER 600 PM AND INTO NORTHERN IOWA AFTER 1000 PM. METEOROLOGICAL COMMENTS...A FAST-MOVING SITUATION WAS SETTING AS AN UNUSUALLY STRONG STORM SYSTEM FOR THIS TIME OF YEAR ROTATES OVER SOUTHEAST SOUTH DAKOTA. EXTREMELY UNSTABLE AIR WAS LIFTING NORTH INTO IOWA FROM MISSOURI AND KANSAS...WHERE LIFTED INDICES WERE BELOW MINUS 10. VERY STRONG SOUTH WINDS OVER 60 MPH WERE INDICATED ABOUT 3000 FEET UP IN THE ATMOSPHERE...WHICH MAKES DAMAGING DOWNBURST WINDS THE MAIN THREAT. IF SOUTHEAST WINDS CONTINUE AT THE SURFACE OVER IOWA...THE THREAT OF TORNADOES MAY INCREASE. PRECAUTIONS...PEOPLE WHO HAVE OUTDOOR PLANS THIS EVENING...ALONG WITH COMMUNITIES HAVING FIREWORKS DISPLAYS...SHOULD MONITOR THIS SITUATION VERY CLOSELY THIS EVENING. SPOTTER ACTIVATION MAY BE REQUIRED AS WELL. PYTLAK
Special weather statement, Jul 4, 1:38 PM CDT, 3 hours 30 minutes before
IAZALL-050000- IOWA SEVERE WEATHER OUTLOOK...CORRECTION NATIONAL WEATHER SERVICE DES MOINES IA 138 PM CDT TUE JUL 4 1995 HAZARD...SEVERE THUNDERSTORMS PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. LARGE HAIL AND AN ISOLATED TORNADO IS ALSO POSSIBLE. AREA OF CONCERN...ABOUT THE SOUTHEAST TWO-THIRDS OF IOWA...SOUTHEAST OF A LINE FROM MASON CITY TO OMAHA-COUNCIL BLUFFS. TIMING DETAILS...WIDELY SCATTERED THUNDERSTORMS WERE MOVING RAPIDLY NORTHEAST ACROSS EAST CENTRAL IOWA EARLY THIS AFTERNOON...BUT THESE ARE NOT EXPECTED TO BECOME SEVERE. SEVERE THUNDERSTORMS DEVELOPING OVER NORTHEAST KANSAS WILL RACE INTO SOUTHERN IOWA AFTER 600 PM AND INTO NORTHERN IOWA AFTER 1000 PM. METEOROLOGICAL COMMENTS...A FAST-MOVING SITUATION WAS DEVEOPING AS AN UNUSUALLY STRONG STORM SYSTEM FOR THIS TIME OF YEAR ROTATES OVER SOUTHEAST SOUTH DAKOTA. EXTREMELY UNSTABLE AIR WAS LIFTING NORTH INTO IOWA FROM MISSOURI AND KANSAS...WHERE LIFTED INDICES WERE BELOW MINUS 10. VERY STRONG SOUTH WINDS OVER 60 MPH WERE INDICATED ABOUT 3000 FEET UP IN THE ATMOSPHERE...WHICH MAKES DAMAGING DOWNBURST WINDS THE MAIN THREAT. IF SOUTHEAST WINDS CONTINUE AT THE SURFACE OVER IOWA...THE THREAT OF TORNADOES MAY INCREASE. PRECAUTIONS...PEOPLE WHO HAVE OUTDOOR PLANS THIS EVENING...ALONG WITH COMMUNITIES HAVING FIREWORKS DISPLAYS...SHOULD MONITOR THIS SITUATION VERY CLOSELY THIS EVENING. SPOTTER ACTIVATION MAY BE REQUIRED AS WELL. PYTLAK CORRECTION FOR WORDING IN 3RD PARAGRAPH
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 4:18 PM CDT | Severe Thunderstorm Warning | DMX | Taylor | 32 min |
| Jul 4, 4:39 PM CDT | Severe Thunderstorm Warning | DMX | Union | 31 min |
| Jul 4, 5:34 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 16 min |
| Jul 4, 5:56 PM CDT | Severe Thunderstorm Warning | DMX | Polk | 14 min |
| Jul 4, 6:37 PM CDT | Severe Thunderstorm Warning | DMX | Jasper, Marshall | 13 min |
| Jul 4, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Mahaska, Wapello | 23 min |
| Jul 4, 6:52 PM CDT | Severe Thunderstorm Warning | DMX | Poweshiek | 23 min |
| Jul 4, 6:58 PM CDT | Severe Thunderstorm Warning | DMX | Marshall, Tama | 32 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.