Alert archive / Indiana / Severe Thunderstorm Warnings in 1991
Severe Thunderstorm Warning 39, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Apr 9, 1991, 12:26 PM EST for Perry County, Indiana. It was in force for 34 min. 1 report came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Apr 9, 1991, 12:26 PM EST (17:26 UTC)
- Expired
- Apr 9, 1991, 1:00 PM EST
- In force
- 34 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
County Perry County, IN
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Apr 9, 12:55 PM EST | Thunderstorm Wind 0 | Perry, IN |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.
The nearest sounding before it
Paducah/Barkley, KY (KPAH), launched 12:00Z, 5.4 hours before the alert went out and 214 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
- 2407 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 710 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- 271 m²/s²
- 0-3 km storm-relative helicity
- 237 m²/s²
- Significant tornado parameter
- 3.5
- Supercell composite
- 13.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KEVV 091729 SVREVV INC123-KYC059-091800- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE EVANSVILLE IN 1226 PM CDT (1226 PM EST) TUE APR 9 1991 THE NATIONAL WEATHER SERVICE IN EVANSVILLE HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 100 PM CDT (100 PM EST) FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN SOUTH CENTRAL INDIANA ...PERRY COUNTY IN NORTHWEST KENTUCKY ...DAVIESS COUNTY AT 1226 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM WAS NEAR OWENSBORO KENTUCKY. THE STORM WAS MOVING NORTHEAST AT 50 MPH...AND WILL CROSS THE OHIO RIVER INTO SOUTHERN PERRY COUNTY BY 1235 PM CDT. RESIDENTS IN THE PATH OF THIS STORM TAKE COVER IMMEDIATELY. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO RAPIDLY CHANGING WEATHER CONDITIONS. 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. RUNNELS
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, Apr 9, 11:37 AM EST, 49 minutes before
INZ015-092300- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE INDIANAPOLIS IN 1135 AM EST TUE APR 9 1991 IN INDIANA THIS TORNADO WATCH IS IN EFFECT UNTIL 6 PM EST AND INCLUDES THE FOLLOWING COUNTIES IN SOUTHEAST INDIANA... SCOTT...WASHINGTON...CLARK...FLOYD AND HARRISON. SOME CITIES INCLUDED ARE NEW ALBANY...CHARLESTOWN...SALEM AND CORYDON. REMEMBER...A WATCH MEANS THAT CONDITIONS ARE FAVORABLE FOR SEVERE WEATHER IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. STEIGERWALDT
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 9, 1:52 PM EST | Severe Thunderstorm Warning | IND | Decatur, Jennings | 38 min |
| Apr 9, 2:39 PM EST | Severe Thunderstorm Warning | IND | Rush | 25 min |
| Apr 9, 2:51 PM EST | Severe Thunderstorm Warning | IND | Fayette | 24 min |
| Apr 9, 3:05 PM EST | Severe Thunderstorm Warning | IND | Union | 15 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 1991Every severe thunderstorm warning in 1991
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.