Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 166, NWS Wilmington, OH

August 4, 1997Madison County, Union County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Aug 4, 1997, 3:56 AM EDT for Madison County, Union County, Ohio. It was in force for 44 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: Aug 4, 1997, 3:56 AM EDT (07:56 UTC)
Expired: Aug 4, 1997, 4:40 AM EDT
In force: 44 min
Issued by: NWS Wilmington, OH
Area: Whole counties

Counties Madison County, OH, Union County, OH

The radar

The Cincinnati radar (KILN), 84 km from the middle of the area, began a volume at 07:58 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 7.9 hours before the alert went out and 82 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 52 J/kg
Mixed-layer CIN: -57 J/kg
Mixed-layer LCL: 2164 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 22 m²/s²
0-3 km storm-relative helicity: 88 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KILN 040756 RRA
SVRILN
OHC097-159-040840-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
356 AM EDT MON AUG 4 1997

THE NATIONAL WEATHER SERVICE IN WILMINGTON OH HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 440 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...

IN CENTRAL OHIO

   ...MADISON COUNTY
   ...UNION COUNTY
 
AT 350 AM WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE
THUNDERSTORM IN EASTERN CHAMPAIGN COUNTY ABOUT 8 MILES EAST OF
URBANA. THIS STORM WAS MOVING TO THE SOUTHEAST AT 25 MPH AND
WILL PASS OVER SOUTHERN UNION AND NORTHERN MADISON COUNTIES.
SOME TOWNS IN THE PATH OF THIS STORM INCLUDE...MILFORD CENTER...
AND ROSEDALE.
 
IF YOU ARE IN THE PATH OF THIS STORM...MOVE INSIDE A STRONG
BUILDING. STAY AWAY FROM WINDOWS SINCE THEY CAN EASILY SHATTER IN
SEVERE THUNDERSTORM WINDS. DO NOT USE TELEPHONES OR APPLIANCES
UNLESS ABSOLUTELY NECESSARY UNTIL THIS STORM HAS PASSED.

RANDALL

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.

NWS Wilmington, OH wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 4, 1:58 AM EDT, 1 hour 58 minutes earlier.

Area forecast discussion, Aug 4, 1:58 AM EDT, 1 hour 58 minutes before

FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
158 AM EDT MON AUG 04 1997

FCST PROBS TO CNSDR ARE CHC/S FOR TSTMS TDA AND EFFECTS ON TEMPS. UPR
TROF SHARPENS OVR ERN US THRU PD AS SERIES OF S/WVS DROP SE THRU GRTLKS
RGN. LTST SFC ANLYS SHWS CDFNT STALLED OUT IN E-W ORIENTATION ACRS SRN
GRTLKS. TSTMS HV DVLPD N OF BNDRY OVR MN INVOF BNDRY IN AREA OF LO LVL
CNVRGC FM NRN IL THRU NRN OH. GOOD H8 THETA-E ADVCTN AT NOSE OF 20-25KT
INTO CNTRL OH THIS MRNG AS FNT SAGS SWRD. THEREFORE TSTM THREAT ACRS NRN
OH SHUD BE MNLY DURG MRNG HRS. BEST H8 THETA-E ADVCTN AND PRECIP EFF.
INTO FAR SRN OH/NRN KY AHD OF FNT THIS AFTN SHUD PROVIDE CONTD CHC OF
TSTMS TDA. TEMP WISE PREFER COMP BTWN FAN AND FWC FOR TDA/S HI/S.

FNT SAGS S OF OH RVR TNGT WITH DRIER AIR INTO RGN ON NRLY WNDS. NXT
S/WV SETTING OFF TSTMS OVR MN TO DROP SE THRU OH TNGT. SHUD BE DRY
ENOUGH THAT PRECIP IS NOT A PROBLEM. EFFECTS WL BE SOME LINGERING
CLOUDINESS ESPECIALLY OVR CNTRL AND ERN OH OVRNGT. CLDS MAY KEEP
READINGS A LTL WRMR OVR CNTRL OH. OTHRWS...MID 50S LOOKS GOOD LIMA...
UPR 50S DAY AND NR 60 CVG.

SFC RDGG INTO AREA ON TUE WITH GOOD SUBSIDENCE EXPECTED TO LIMIT
CLD CVR. ALTHO WE SHUD SEE A FAIR AMT OF SS...GIVEN UNSEASONABLE
H8 TEMPS  WITH 10 DEG C INTO SRN OH BY 00Z TEMPS IN MID/UPR 70S
XPCTD.

CVG 083/060 076/052 077 420
DAY 080/057 074/050 075 410
CMH 082/060 075/050 076 621

RANDALL

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 4, 2:42 AM EDT	Severe Thunderstorm Warning	ILN	Mercer	48 min
Aug 4, 3:45 AM EDT	Severe Thunderstorm Warning	ILN	Champaign	35 min
Aug 4, 4:16 AM EDT	Severe Thunderstorm Warning	ILN	Franklin	39 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1997 Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.