Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 167, NWS Wilmington, OH

August 4, 1997Franklin County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Aug 4, 1997, 4:16 AM EDT for Franklin County, Ohio. It was in force for 39 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: Aug 4, 1997, 4:16 AM EDT (08:16 UTC)
Expired: Aug 4, 1997, 4:55 AM EDT
In force: 39 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Franklin County, OH

The radar

The Cincinnati radar (KILN), 93 km from the middle of the area, began a volume at 08:18 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.

What was reported inside it

Time	Report	Where	Remark
Aug 4, 4:50 AM EDT	Thunderstorm Wind 50	Grove City, OH	Several trees downed.

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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 8.3 hours before the alert went out and 90 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

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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, 2 hours 18 minutes earlier.

Area forecast discussion, Aug 4, 1:58 AM EDT, 2 hours 18 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, 3:56 AM EDT	Severe Thunderstorm Warning	ILN	Madison, Union	44 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.