Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 195, NWS Wilmington, OH

August 27, 1997Clermont County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Aug 27, 1997, 4:43 PM EDT for Clermont County, Ohio. It was in force for 27 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 27, 1997, 4:43 PM EDT (20:43 UTC)
Expired: Aug 27, 1997, 5:10 PM EDT
In force: 27 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Clermont County, OH

The radar

The Cincinnati radar (KILN), 50 km from the middle of the area, began a volume at 20:44 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 27, 5:00 PM EDT	Thunderstorm Wind 50	Lindale, OH	Several large limbs and power lines 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 12:00Z, 8.7 hours before the alert went out and 52 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: 17 J/kg
Mixed-layer CIN: -227 J/kg
Mixed-layer LCL: 1187 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 93 m²/s²
0-3 km storm-relative helicity: 93 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

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 27, 2:53 PM EDT, 1 hour 50 minutes earlier.

Area forecast discussion, Aug 27, 2:53 PM EDT, 1 hour 50 minutes before

FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
252 PM EDT WED AUG 27 1997

MID LVL S/WV TO PIVOT THRU GRTLKS TDA WITH WK CDFNT ENTERING NW IN
TO SLIP INTO NW OH THIS EVE AND INTO S CNTRL OH BY 06Z. DYNAMICS ARE
NOT IMPRESSIVE WITH THIS SYS AND CNVRGC IS WK WITH FNTL BOUNDARY. BEST
THETA-E ADVCTN AT H8 ACRS CNTRL AND S CNTRL OH THIS EVE. BEST INSTBY ACRS
SRN OH WERE ADAP LI/S ARE -8 TO -10. GIVEN THIS SCENARIO CHC OF WDLY SCTD
TSTMS NOT OUT OF THE QUESTION UNTIL FROPA. XPCT BEST CHC OF TSTMS IN S
CNTRL OH WHERE 40-50 POPS LOOK REASONABLE THIS EVE. OVR FAR WRN OH
(LIMA...DAY AND CVG) THREAT FOR TSTMS ONLY THRU ERLY EVE. LO LVL MSTR
WHICH LAGS BHD FNT WL LKLY CAUSE SOME PATCHY VLY F TO DVLP ACRS SRN OH
AND NRN KY. PREFER WRMR READINGS CLOSER TO FWC GUID FOR TNGTS LOWS.

SLGTLY COOLER AND DRIER AIR FILTERS INTO OH VLY ON THU. CU RULE INDICATING
BKN CU ESPECIALLY OVR SRN OH/NRN KY AREA. SUGG PARTLY SUNNY ACRS SRN OH
AND NRN KY AND MSTLY SUNNY ELSEWHERE. PREFER READINGS CLOSER TO WRMR
FWC NUMBERS.

SFC HI PRES AND SUBSIDENCE TO DOMINATE AREA THU NGT AND FRI. TEMPS
SHUD BE A LTL COOLER ON FRI. GUID APPEARS CLOSE.

CVG 066/084 060/082 061 320
DAY 062/082 058/080 060 210
CMH 063/082 058/081 059 310

RANDALL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 27, 5:37 PM EDT	Severe Thunderstorm Warning	ILN	Scioto	48 min
Aug 27, 6:23 PM EDT	Flash Flood Warning	ILN	Scioto	2 hr
Aug 27, 6:34 PM EDT	Severe Thunderstorm Warning	ILN	Scioto	46 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.