Alert archive / Indiana / Tornado Warnings in 1998
Tornado Warning 1, NWS Wilmington, OH
NWS Wilmington, OH issued this tornado warning at Apr 8, 1998, 12:21 AM EST for Switzerland County, Indiana. It was in force for 49 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Apr 8, 1998, 12:21 AM EST (05:21 UTC)
- Expired
- Apr 8, 1998, 1:10 AM EST
- In force
- 49 min
- Issued by
- NWS Wilmington, OH
- Area
- Whole counties
County Switzerland County, IN
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 5.4 hours before the alert went out and 126 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
- 1470 m above ground
- 0-6 km bulk shear
- 68 kt
- 0-1 km storm-relative helicity
- 385 m²/s²
- 0-3 km storm-relative helicity
- 517 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 KILN 080523 RRA TORILN INC155-080610- BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE WILMINGTON OH 121 AM EDT (1221 AM EST) WED APR 8 1998 THE NATIONAL WEATHER SERVICE IN WILMINGTON OH HAS ISSUED A TORNADO WARNING EFFECTIVE UNTIL 110 AM EST (210 AM EDT) FOR PEOPLE IN THE FOLLOWING LOCATION... IN SOUTHEASTERN INDIANA ...SWITZERLAND COUNTY AT 1220 AM EST (120 AM EDT) WEATHER SERVICE DOPPLER RADAR WAS INDICATING A DEVELOPING TORNADO IN EASTERN JEFFERSON COUNTY. THE STORM PRODUCING THE TORNADO WAS MOVING TO THE EAST-NORTHEAST AT 35 MPH AND WILL PASS OVER BENNINGTON...PLEASANT AND FAIRVIEW. THIS IS A DANGEROUS STORM. YOUR QUICK REACTION TO THIS TORNADO WARNING MAY SAVE YOUR LIFE. GO TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR POSSIBLE. ABANDON CARS AND MOBILE HOMES FOR A STRONGER SHELTER. REMEMBER...MOST TORNADO DEATHS OCCUR IN MOBILE HOMES. RANDALL
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Wilmington, OH wrote its last area forecast discussion before this tornado warning went out at Apr 7, 8:00 PM EST, 4 hours 21 minutes earlier.
Area forecast discussion, Apr 7, 8:00 PM EST, 4 hours 21 minutes before
FORECAST COORDINATION MESSAGE NATIONAL WEATHER SERVICE WILMINGTON OH 900 PM EDT TUE APR 7 1998 FCST CHALLENGES THRU PD ARE CHC/S FOR TSTMS. LTST SFC ANLYS SHWS LO PRES OVR SRN IA WITH WRMFNT XTNDG ESE ACRS CNTRL IL SRN IN AND ACRS XTRM NRN KY. TSTMS HV DVLPD ALONG WRMFNT IN AREA OF GOOD MOIST FLUX CNVRGC. WHERE INSTBY IS GREATEST ACRS CNTRL IL AND CNTRL IN...WHERE STMS HV EXCEEDED SVR LIMITS. INSTBY HS BEEN LIMITING FACTOR OVR NRN KY AND SRN OH. DWPT AXIS SHIFTS E INTO SRN OH BY 06Z WITH AREA IN LEFT FRONT QUAD OF UPR JET. XPCT TSVMS TO CONT TO DVLP ESE ALONG AND N OF WRMFNT INTO ERN IN AND WRN OH. WITH LOSS OF DAYTIME HEATG AND WITH STMS MOVG INTO MORE STABLE AIR OVR OH WE EXPCT SOME WEAKENING TO OCCUR. SLO MOVG WRMFNT MOVG NWD WL DIMINISH THREAT FOR TSTMS ACRS NRN KY AND SRN OH TNGT...WHILE GREATER THREAT WL CONT ALONG AND N OF BNDRY. SUGG TRENDING TSTM POPS THIS WAY. XPCT A LULL IN ACTION LTR TNGT THRU FIRST PART OF WED. AMS RELOADS ON WED EVE WITH APPRCH OF UPR LO. GREATEST THREAT FOR SVR-WX APPEARS TO BE OVR FAR SRN OH AND NRN KY WHERE BEST DIFF. POSITIVE VORTICITY IS EXPECTED. CVG 054/075 338 DAY 050/073 548 CMH 051/074 447 PRT 055/075 337 AVX 050/070 646 RANDALL
In the hours before
Special weather statement, Apr 7, 7:00 PM EST, 5 hours 21 minutes before
INZ050-058-059-066-073>075-080600- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 800 PM EDT (700 PM EST) TUE APR 7 1998 ...TORNADO WATCH IN EFFECT FOR EAST CENTRAL AND SOUTHEAST INDIANA UNTIL 2 AM EDT (1 AM EST)... A WARM FRONT WHICH EXTENDS FROM CENTRAL ILLINOIS THROUGH CENTRAL INDIANA INTO SOUTHEAST INDIANA HAS BEEN THE FOCUS FOR THUNDERSTORM DEVELOPMENT TO OUR WEST. SEVERE THUNDERSTORMS WITH A HISTORY OF TORNADOES HAVE DEVELOPED ALONG AND NORTH OF THIS WARM FRONT ACROSS CENTRAL ILLINOIS AND SEVERE THUNDERSTORMS WERE BEGINNING TO DEVELOP OVER CENTRAL INDIANA. THE THREAT FOR SEVERE THUNDERSTORMS WHICH MAY PRODUCE TORNADOES IS EXPECTED TO SPREAD EAST ALONG AND JUST NORTH OF THE WARM FRONT INTO EASTERN CENTRAL AND SOUTHEAST INDIANA THIS EVENING. THE FOLLOWING COUNTIES ARE IN A TORNADO WATCH UNTIL 2 AM EDT (1 AM EST): WAYNE...FAYETTE...UNION...FRANKLIN...RIPLEY...DEARBORN AND OHIO. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS 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. RANDALL
Special weather statement, Apr 7, 9:53 PM EST, 2 hours 28 minutes before
INZ073>075-080-080900- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE WILMINGTON OH 1053 PM EDT (953 PM EST) TUE APR 7 1998 ...TORNADO WATCH IN EFFECT FOR SOUTHEAST INDIANA UNTIL 5 AM EDT (4 AM EST)... A WARM FRONT WHICH EXTENDS FROM CENTRAL ILLINOIS THROUGH SOUTHEAST INDIANA HAS BEEN THE FOCUS FOR THUNDERSTORM DEVELOPMENT TO OUR WEST. SEVERE THUNDERSTORMS WITH A HISTORY OF TORNADOES HAVE DEVELOPED ALONG AND NORTH OF THIS WARM FRONT ACROSS CENTRAL ILLINOIS AND WEST CENTRAL INDIANA. ADDITIONAL THUNDERSTORMS HAVE DEVELOPED ACROSS SOUTHWEST INDIANA AND SOUTHERN ILLINOIS IN THE WARM AIR SECTOR. THE THREAT FOR SEVERE THUNDERSTORMS WHICH MAY PRODUCE TORNADOES IS EXPECTED TO SPREAD EAST ACROSS SOUTHERN INDIANA OVERNIGHT. THE FOLLOWING COUNTIES ARE IN A TORNADO WATCH UNTIL 5 AM EDT (4 AM EST): FRANKLIN...RIPLEY...DEARBORN...OHIO AND SWITZERLAND. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS 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. RANDALL
The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 8, 12:01 AM EST | Severe Thunderstorm Warning | ILN | Ripley | 49 min |
| Apr 8, 12:39 AM EST | Severe Thunderstorm Warning | ILN | Dearborn, Ohio | 61 min |
| Apr 8, 1:11 AM EST | Severe Thunderstorm Warning | ILN | Switzerland | 44 min |
| Apr 8, 1:32 AM EST | Flash Flood Warning | ILN | Dearborn | 118 min |
| Apr 8, 1:36 AM EST | Flash Flood Warning | ILN | Ohio | 3 hr |
Nearby
Tornado Warnings in Indiana, 1998Every tornado warning in 1998Tornadoes in 1998
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.