Alert archive / Iowa / Severe Thunderstorm Warnings in 1995
Severe Thunderstorm Warning 20, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Apr 10, 1995, 9:54 AM CDT for Decatur County, Iowa. It was in force for 46 min.
The area
The counties it named.
The facts
- Issued
- Apr 10, 1995, 9:54 AM CDT (14:54 UTC)
- Expired
- Apr 10, 1995, 10:40 AM CDT
- In force
- 46 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Decatur County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 2.9 hours before the alert went out and 226 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
- 3 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 513 m above ground
- 0-6 km bulk shear
- 57 kt
- 0-1 km storm-relative helicity
- 69 m²/s²
- 0-3 km storm-relative helicity
- 259 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 101455 RRA
SVRDSM
IAC053-101540-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
954 AM CDT MON APR 10 1995
* SEVERE THUNDERSTORM WARNING FOR
DECATUR COUNTY - SOUTH CENTRAL IOWA
* UNTIL 1040 AM CDT
* SOME TOWNS AFFECTED
LAMONI
LEON
DAVIS CITY
GARDEN GROVE
* AT 955 AM RADAR INDICATED A SEVERE THUNDERSTORM 5 MILES SOUTHWEST OF
LAMONI OR 75 MILES SOUTHWEST OF DES MOINES MOVING` NORTHEAST AT 40
MPH.
* THE STORM WILL BE THROUGH LAMONI BY 1005 AM AND THEN THROUGH LEON BY
1020 AM.
THIS IS A DANGEROUS STORM AND IT WILL LIKELY CONTAIN LARGE HAIL. DO NOT
GO OUTDOORS.
JOHNSONWhat 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, Apr 10, 8:35 AM CDT, 1 hour 19 minutes before
IAZALL-SDZ071-NEZ013>015-101600- IOWA SEVERE WEATHER OUTLOOK AND STORM SUMMARY NATIONAL WEATHER SERVICE DES MOINES IA 834 AM CDT SUN APR 9 1995 ...A MAJOR SPRING STORM WILL CAUSE A VARIETY OF HAZARDOUS WEATHER ACROSS IOWA TODAY AND TONIGHT... HAZARDS AND AREAS OF CONCERN... WINTER WEATHER...WINTER WEATHER ADVISORY FOR ALL BUT FAR SOUTHEAST IOWA THIS MORNING FOR A MIX OF FREEZING RAIN AND HEAVY SLEET. WINTER STORM WATCH NORTHWEST OF A LINE FROM ALGONA TO SAC CITY TO SIOUX CITY FOR 4 TO 6 INCHES OF ADDITIONAL SNOW TONIGHT AND TUESDAY. FLOODING...FLASH FLOOD WATCH FOR 1 TO 3 INCHES OF RAIN TODAY AND TONIGHT SOUTHEAST OF A LINE FROM WEST UNION...TO PERRY...TO LAMONI. SEVERE WEATHER...SEVERE THUNDERSTORM WATCH FOR FAR SOUTHWEST IOWA UNTIL 300 PM CDT. THE MAIN THREAT IS FOR LARGE HAIL. . TIMING DETAILS... A THUNDERSTORM COMPLEX WAS MOVING NORTHEAST ACROSS IOWA...DUMPING HEAVY SLEET...RAIN AND FREEZING RAIN ACROSS THE ADVISORY AREA. MORE HEAVY RAIN WAS STREAMING NORTHEAST OUT OF EASTERN KANSAS WHERE MORE THUNDERSTORMS WERE DEVELOPING. THE SLEET-RAIN LINE WILL GRADUALLY MOVE NORTHWEST THIS MORNING AS TEMPERATURES SLOWLY CLIMB ABOVE FREEZING. METEOROLOGICAL COMMENTS... LOW PRESSURE CENTER WAS INTENSIFYING OVER SOUTHERN OKLAHOMA. LOW LEVEL INFLOW OF GREATER THAN 50 KNOTS IS BRINGING TROPICAL MOISTURE NORTH FROM THE GULF OF MEXICO INTO THE STATE...WHILE COLD AIR REMAINS TRAPPED AT THE SURFACE. THE UPPER LEVEL JET STREAM PATTERN FAVORS CONTINUED INTENSIFICATION OF THE LOW CENTER AS IT MOVES NORTHEAST TOWARD SOUTHEAST IOWA. ITS SLOW MOVEMENT FAVORS CONTINUED TRAINING OF THUNDERSTORMS ACROSS MUCH OF THE STATE. THE ATMOSPHERE WILL BECOME UNSTABLE ENOUGH BY LATE MORNING OVER FAR SOUTHWEST IOWA TO SUPPORT ISOLATED SEVERE THUNDERSTORMS WITH LARGE HAIL. PRECAUTIONS... DUE TO THE RAPIDLY CHANGING NATURE OF THIS STORM AND THE WIDE VARIETY OF HAZARDOUS WEATHER IT COULD CAUSE...MEDIA OUTLETS...EMERGENCY MANAGERS AND PUBLIC SAFETY DEPARTMENTS SHOULD MONITOR THE WEATHER SITUATION CLOSELY THROUGHOUT THE DAY. THE NEXT STORM SUMMARY WILL BE ISSUED BY 1000 AM. PYTLAK
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 10, 10:45 AM CDT | Severe Thunderstorm Warning | DMX | Decatur | 35 min |
| Apr 10, 12:21 PM CDT | Severe Thunderstorm Warning | DMX | Wayne | 29 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.