Alert archive / Iowa / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 76, NWS Des Moines, IA
NWS Des Moines, IA issued this severe thunderstorm warning at Jun 10, 1994, 3:17 PM CDT for Crawford County, Iowa. It was in force for 28 min.
The area
The counties it named.
The facts
- Issued
- Jun 10, 1994, 3:17 PM CDT (20:17 UTC)
- Expired
- Jun 10, 1994, 3:45 PM CDT
- In force
- 28 min
- Issued by
- NWS Des Moines, IA
- Area
- Whole counties
County Crawford County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 8.3 hours before the alert went out and 114 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
- 333 J/kg
- Mixed-layer CIN
- -162 J/kg
- Mixed-layer LCL
- 1191 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- -54 m²/s²
- 0-3 km storm-relative helicity
- -10 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 102018 SVRDSM IAC047-102045- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE DES MOINES IA 317 PM CDT FRI JUN 10 1994 THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 345 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN WEST CENTRAL IOWA ...EASTERN CRAWFORD COUNTY A STRONG AND INTENSIFYING THUNDERSTORM WAS MOVING INTO EASTERN CRAWFORD COUNTY AT 316 PM CDT. IT HAD ALREADY PRODUCED 45 MPH WINDS IN DENISON AT 310 PM. WEATHER SERVICE DOPPLER RADAR INDICATED THIS STORM WAS BECOMING SEVERE AND WILL MOVE INTO VAIL...ASPENWALL AND WESTSIDE BY 325 PM. DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL UP TO ONE INCH IN DIAMATER IS LIKELY AS THIS STORM MOVES EAST AT 25 MPH. WHEN THUNDERSTORMS ARE OCCURRING...PEOPLE SHOULD MOVE INSIDE A STRONG BUILDING. DO NOT STAND BY WINDOWS. DON'T USE TELEPHONES OR ELECTRICAL APPLIANCES UNLESS IN AN EMERGENCY UNTIL THE STORM HAS PASSED. MOTORISTS SHOULD NOT DRIVE INTO LOW WATER CROSSINGS. PYTLAK
What 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, Jun 10, 2:53 PM CDT, 24 minutes before
IAZ044-102030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 253 PM CDT FRI JUN 10 1994 ...A STRONG THUNDERSTORM WAS BEARING DOWN ON CRAWFORD COUNTY IN WEST CENTRAL IOWA... AT 253 PM CDT...A STRONG THUNDERSTORM WAS ENTERING WESTERN CRAWFORD COUNTY. IT WAS LOCATED NEAR CHARTER OAK...WHICH IS 65 MILES NORTHEAST OF OMAHA-COUNCIL BLUFFS. IT WAS MOVING EAST AT 20 MILES AN HOUR AND WILL ARRIVE IN DENISON BY 300 PM CDT. HAIL UP TO ONE HALF INCH IN DIAMETER AND WIND GUSTS NEAR 40 MPH ARE LIKELY AS THIS STORM PASSES OVERHEAD. REMEMBER THAT ANY STORM... REGARDLESS OF ITS INTENSITY...PRODUCES DANGEROUS CLOUD-TO-GROUND LIGHTNING. PYTLAK
Special weather statement, Jun 10, 2:53 PM CDT, 24 minutes before
IAZ044-102030- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 253 PM CDT FRI JUN 10 1994 ...A STRONG THUNDERSTORM WAS BEARING DOWN ON CRAWFORD COUNTY IN WEST CENTRAL IOWA... AT 253 PM CDT...A STRONG THUNDERSTORM WAS ENTERING WESTERN CRAWFORD COUNTY. IT WAS LOCATED NEAR CHARTER OAK...WHICH IS 65 MILES NORTHEAST OF OMAHA-COUNCIL BLUFFS. IT WAS MOVING EAST AT 20 MILES AN HOUR AND WILL ARRIVE IN DENISON BY 300 PM CDT. HAIL UP TO ONE HALF INCH IN DIAMETER AND WIND GUSTS NEAR 40 MPH ARE LIKELY AS THIS STORM PASSES OVERHEAD. REMEMBER THAT ANY STORM... REGARDLESS OF ITS INTENSITY...PRODUCES DANGEROUS CLOUD-TO-GROUND LIGHTNING. PYTLAK
Special weather statement, Jun 10, 3:00 PM CDT, 17 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-102100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 300 PM CDT FRI JUN 10 1994 ...THUNDERSTORMS WILL AFFECT THE MASON CITY AREA... AT 3 PM THUNDERSTORMS PRODUCING HEAVY RAINS...PEA SIZE HAIL AND DEADLY LIGHTNING WERE LOCATED 15 MILES SOUTHWEST AND NORTHEAST OF MASON CITY. THROUGH 4 PM THE STRONGEST STORMS WILL AFFECT MASON CITY...ST. ANSGAR AND OSAGE. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTH CENTRAL IOWA UNTIL 7 PM THIS EVENING. SHOULD THREATENING WEATHER APPROACH MOVE INSIDE UNTIL THE STORMS HAVE PASSED. COLLAR
Special weather statement, Jun 10, 3:02 PM CDT, 15 minutes before
IAZ006-007-008-009-010-011-016-017-018-019-026-027-028-029-038- 039-040-102100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WATERLOO IA 300 PM CDT FRI JUN 10 1994 ...THUNDERSTORMS WILL AFFECT THE MASON CITY AREA... AT 3 PM THUNDERSTORMS PRODUCING HEAVY RAINS...PEA SIZE HAIL AND DEADLY LIGHTNING WERE LOCATED 15 MILES SOUTHWEST AND NORTHEAST OF MASON CITY. THROUGH 4 PM THE STRONGEST STORMS WILL AFFECT MASON CITY...ST. ANSGAR AND OSAGE. A SEVERE THUNDERSTORM WATCH IS IN EFFECT FOR NORTH CENTRAL IOWA UNTIL 7 PM THIS EVENING. SHOULD THREATENING WEATHER APPROACH MOVE INSIDE UNTIL THE STORMS HAVE PASSED. COLLAR
Special weather statement, Jun 10, 3:13 PM CDT, 4 minutes before
IAZ045-044-102100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 313 PM CDT FRI JUN 10 1994 ...WIND GUST TO 45 MPH HAS BEEN REPORTED IN DENISON... AT 310 PM CDT...THE AUTOMATED WEATHER OBSERVATION SYSTEM IN DENISON REPORTED A GUST TO 45 MPH. THE THUNDERSTORM CAUSING THESE STRONG WINDS WAS MOVING EAST AT 20 MILES AN HOUR ACROSS CRAWFORD COUNTY. IT WILL AFFECT THE TOWNS OF MANILA...ASPINWALL...AND WESTSIDE BY 315 PM...AND WILL MOVE INTO WESTERN CARROLL COUNTY BY 330 PM. PEOPLE ON THE PATH OF THIS STORM SHOULD MOVE INSIDE A STRONG BUILDING AS IT PASSES OVERHEAD. HAIL UP TO ONE HALF INCH INDIAMATER AND WIND GUSTS NEAR 50 MPH ARE LIKELY. PYTLAK
Special weather statement, Jun 10, 3:13 PM CDT, 4 minutes before
IAZ045-044-102100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE DES MOINES IA 313 PM CDT FRI JUN 10 1994 ...WIND GUST TO 45 MPH HAS BEEN REPORTED IN DENISON... AT 310 PM CDT...THE AUTOMATED WEATHER OBSERVATION SYSTEM IN DENISON REPORTED A GUST TO 45 MPH. THE THUNDERSTORM CAUSING THESE STRONG WINDS WAS MOVING EAST AT 20 MILES AN HOUR ACROSS CRAWFORD COUNTY. IT WILL AFFECT THE TOWNS OF MANILA...ASPINWALL...AND WESTSIDE BY 315 PM...AND WILL MOVE INTO WESTERN CARROLL COUNTY BY 330 PM. PEOPLE ON THE PATH OF THIS STORM SHOULD MOVE INSIDE A STRONG BUILDING AS IT PASSES OVERHEAD. HAIL UP TO ONE HALF INCH INDIAMATER AND WIND GUSTS NEAR 50 MPH ARE LIKELY. PYTLAK
The office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 2:30 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 30 min |
| Jun 10, 2:40 PM CDT | Severe Thunderstorm Warning | DMX | Buena Vista | 35 min |
| Jun 10, 4:17 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 43 min |
| Jun 10, 6:31 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 44 min |
| Jun 10, 6:45 PM CDT | Severe Thunderstorm Warning | DMX | Audubon | 30 min |
Nearby
Severe Thunderstorm Warnings in Iowa, 1994Every severe thunderstorm warning in 1994
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.