Alert archive / Iowa / Severe Thunderstorm Warnings in 1994
Severe Thunderstorm Warning 13, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Apr 15, 1994, 12:49 AM CDT for Lee County, Iowa. It was in force for 41 min.
The area
The counties it named.
The facts
- Issued
- Apr 15, 1994, 12:49 AM CDT (05:49 UTC)
- Expired
- Apr 15, 1994, 1:30 AM CDT
- In force
- 41 min
- Issued by
- NWS Quad Cities, IA
- Area
- Whole counties
County Lee County, IA
The nearest sounding before it
Topeka, KS (KTOP), launched 00:00Z, 5.8 hours before the alert went out and 399 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
- 2441 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 1451 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 247 m²/s²
- Significant tornado parameter
- 1.4
- Supercell composite
- 13.4
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KMLI 150549
SVRMLI
IAC111-150630-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOLINE IL
1249 AM CDT FRI APR 15 1994
THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM
WARNING EFFECTIVE UNTIL 130 AM CDT FOR PEOPLE IN THE FOLLOWING
COUNTY
IN THE SOUTHEAST PART OF IOWA
LEE
AT 1240 AM CDT A SEVERE THUNDERSTORM WAS 15 MILES WEST OF
FT MADISON IOWA...OR 85 MILES SOUTHWEST OF THE QUAD CITIES...MOVING
EAST NOTHEAST AT 40 MPH. THIS STORM WILL REACH DONNELLSON IOWA BY
1250 AM CDT AND FT MADISON IOWA BY 100 AM CDT. IF YOU LIVE IN THE
PATH OF THIS STORM...TAKE SHELTER NOW!
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...
DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. STAY INSIDE AWAY FROM WINDOWS UNTIL THE
STORM HAS PASSED.
IF TIME PERMITS...ASK THE NEAREST LAW ENFORCEMENT AGENCY TO RELAY
YOUR REPORT OF SEVERE WEATHER TO THE NATIONAL WEATHER SERVICE.
T MEYER 0548ZWhat 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 14, 9:47 PM CDT, 3 hours 2 minutes before
ILZ009-015-016-024-IAZ065>068-078-088-089-099-150500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 945 PM CDT THU APR 14 1994 ...A TORNADO WATCH IS IN EFFECT FOR HENRY AND LEE COUNTIES IN IOWA... AT 945 PM...SCATTERED THUNDERSTORMS WERE DEVELOPING JUST SOUTH OF BURLINGTON AND OVER CEDAR COUNTY IN IOWA. THESE STORMS WERE MOVING NORTH AND NORTHEAST AT 40 MPH. THESE STORMS WILL BE INCREASING IN INTENSITY AND COVERAGE IN THE NEXT FEW HOURS. KEEP A WATCHFUL EYE TO THE SKY AND LISTEN TO LATER STATEMENTS ON NOAA WEATHER RADIO STATION WXJ-73 MOLINE...ILLINOIS OR YOUR FAVORITE RADIO OR TV STATION. J NOEL
Special weather statement, Apr 14, 10:14 PM CDT, 2 hours 35 minutes before
ILZ009-015-016-024-IAZ065>068-078-088-089-099-150400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 1010 PM CDT THU APR 14 1994 ...A TORNADO WATCH IS IN EFFECT FOR HENRY AND LEE COUNTIES IN IOWA... AT 1005 PM...A VERY STRONG THUNDERSTORM HAD DEVELOPED IN HENDERSON COUNTY ILLINOIS NEAR OQUAWKA. THIS STORM WAS MOVING NORTHEAST AT 50 MILES AN HOUR AND SHOULD MOVE INTO MERCER COUNTY IN THE NEXT 15 MINUTES. THIS STORM SHOULD REACH VIOLA ILLINOIS AROUND 1030 PM. THIS STORM WILL LIKELY CONTAIN STRONG WINDS TO 50 MPH...PEA-SIZED TO MARBLE-SIZED HAIL...AND HEAVY RAINS. NO STORMS WERE IN HENRY OR LEE COUNTIES IN IOWA YET BUT COULD DEVELOP AT ANY TIME. THE POTENTIAL FOR SEVERE WEfATHER REMAINS STRONG...SO STAY TUNED TO NOAA WEATHER RADIO...TV...OR OTHER RADIO STATIONS FOR FURTHER STATEMENTS OR WARNINGS. T MEYER
Special weather statement, Apr 14, 10:35 PM CDT, 2 hours 14 minutes before
ILZ009-015-016-024-IAZ065>068-078-088-089-099-150400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 1030 PM CDT THU APR 14 1994 ...A TORNADO WATCH IS IN EFFECT FOR HENRY AND LEE COUNTIES IN IOWA... ...THUNDERSTORMS DEVELOPING IN THE ILLINOIS BISTATE... AT 1025 PM CDT...THE VERY STRONG STORM THAT MOVED OUT OF HENDERSON COUNTY ILLINOIS TO NEAR VIOLA ILLINOIS...OR ABOUT 25 MILES SOUTH OF THE QUAD CITIES. OTHER THUNDERSTORMS HAD DEVELOPED NEAR PORT BYRON ILLINOIS...OR 15 MILES NORTHEAST OF THE QUAD CITIES. ALL STORMS WERE MOVING NORTHEAST AT 45 MILES AN HOUR AND LIKELY CONTAIN GUSTY WINDS...SMALL HAIL...AND ALTHOUGH A TORNADO WATCH REMAINS IN EFFECT FOR HENRY AND LEE COUNTIES IN IOWA...NO THUNDERSTORMS HAD DEVELOPED IN SOUTHEAST IOWA YET. HOWEVER... THE POTENTIAL FOR SEVERE WEATHER REMAINS HIGH. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE TV OR RADIO STATION FOR FURTHER STATEMENTS OR WARNINGS. T MEYE
Special weather statement, Apr 14, 10:41 PM CDT, 2 hours 8 minutes before
ILZ009-015-016-024-IAZ065>068-078-088-089-099-150400- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 1030 PM CDT THU APR 14 1994 ...A TORNADO WATCH IS IN EFFECT FOR HENRY AND LEE COUNTIES IN IOWA... ...THUNDERSTORMS DEVELOPING IN THE ILLINOIS BISTATE... AT 1025 PM CDT...THE VERY STRONG STORM IN HENDERSON COUNTY ILLINOIS HAD MOVED TO NEAR VIOLA ILLINOIS...OR ABOUT 25 MILES SOUTH OF THE QUAD CITIES. OTHER THUNDERSTORMS HAD DEVELOPED NEAR PORT BYRON ILLINOIS...OR 15 MILES NORTHEAST OF THE QUAD CITIES AND IN NORTHERN SCOTT COUNTY IOWA... ABOUT 15 MILES NORTH OF THE QUAD CITIES. THESE STORMS LIKELY CONTAIN GUSTY WINDS...PEA- TO MARBLE-SIZED HAIL...AND HEAVY RAINS. ALTHOUGH A TORNADO WATCH REMAINS IN EFFECT FOR HENRY AND LEE COUNTIES IN IOWA...NO THUNDERSTORMS HAD DEVELOPED IN SOUTHEAST IOWA YET. HOWEVER... THE POTENTIAL FOR SEVERE WEATHER REMAINS HIGH. STAY TUNED TO NOAA WEATHER RADIO OR YOUR FAVORITE TV OR RADIO STATION FOR FURTHER STATEMENTS OR WARNINGS. T MEYER...CORRECTED AND UPDATED STATEMENT
Special weather statement, Apr 14, 11:39 PM CDT, 1 hour 10 minutes before
ILZ009-015-016-024-IAZ065>068-078-088-089-099-150500- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MOLINE IL 1130 PM CDT THU APR 14 1994 ...SEVERE THUNDERSTORM WATCH FOR ALL OF THE BISTATE EXCEPT FOR HENRY AND LEE COUNTIES IN IOWA UNTIL 500 AM CDT... ...TORNADO WATCH REMAINS IN EFFECT FOR HENRY AND LEE COUNTIES IN IOWA UNTIL 3 AM CDT... ...SEVERE THUNDERSTORM WARNING FOR CLINTON IOWA HAS EXPIRED... THE SEVERE THUNDERSTORM WARNING FOR CLINTON COUNTY IOWA EXPIRED AT 1115 PM CDT. THE SEVERE THUNDERSTORM THAT PRODUCED MARBLE-SIZED HAIL NEAR DE WITT IOWA EARLIER THIS EVENING HAD MOVED NORTH INTO JACKSON COUNTY IOWA. A SEVERE THUNDERSTORM WATCH IS NOW IN EFFECT FOR THE ENTIRE BISTATE... EXCEPT FOR HENRY AND LEE COUNTIES IN IOWA...UNTIL 500 AM CDT. THE TORNADO WATCH FOR HENRY AND LEE COUNTIES IN IOWA REMAINS IN EFFECT UNTIL 300 AM. A LINE OF STRONG TO SEVERE THUNDERSTORMS STRETCHED FROM KIRKSVILLE MISSOURI...OR 150 MILES SOUTHWEST OF THE QUAD CITIES...TO OTTUMWA IOWA...OR ABOUT 100 MILES SOUTHWEST OF THE QUAD CITIES...TO NEAR THE ILLINOIS-IOWA-WISCONSIN STATE LINES INTERSECTION...OR 130 MILES NORTH OF THE QUAD CITIES. THIS LINE WAS MOVING NORTH NORTHEAST AT 40 MILES AN HOUR AND SHOULD REACH THE WESTERN BISTATE BY MIDNIGHT. PERSONS IN THE WESTERN BISTATE SHOULD WATCH FOR SEVERE WEATHER AND BE READY TO TAKE SHELTER IMMEDIATELY. STAY TUNED TO NOAA WEATHER OR YOUR FAVORITE TV OR RADIO STATION FOR FURTHER STATEMENTS OR WARNINGS. T MEYER
The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 14, 10:27 PM CDT | Severe Thunderstorm Warning | DVN | Delaware | 33 min |
| Apr 14, 10:45 PM CDT | Severe Thunderstorm Warning | DVN | Clayton | 45 min |
| Apr 14, 10:51 PM CDT | Severe Thunderstorm Warning | DVN | Clinton | 24 min |
| Apr 14, 11:10 PM CDT | Severe Thunderstorm Warning | DVN | Jackson | 35 min |
| Apr 15, 12:09 AM CDT | Severe Thunderstorm Warning | DVN | Henry | 36 min |
| Apr 15, 12:16 AM CDT | Severe Thunderstorm Warning | DVN | Jones | 29 min |
| Apr 15, 12:22 AM CDT | Severe Thunderstorm Warning | DVN | Delaware | 38 min |
| Apr 15, 12:33 AM CDT | Severe Thunderstorm Warning | DVN | Cedar | 42 min |
| Apr 15, 12:40 AM CDT | Severe Thunderstorm Warning | DVN | Louisa | 50 min |
| Apr 15, 1:00 AM CDT | Severe Thunderstorm Warning | DVN | Des Moines | 30 min |
| Apr 15, 1:00 AM CDT | Severe Thunderstorm Warning | DVN | Muscatine | 30 min |
| Apr 15, 1:29 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 46 min |
| Apr 15, 2:15 AM CDT | Severe Thunderstorm Warning | DVN | Clinton | 60 min |
| Apr 15, 2:46 AM CDT | Severe Thunderstorm Warning | DVN | Scott | 59 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.