Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 177, NWS Wilmington, OH

August 17, 1997Brown County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Aug 17, 1997, 11:13 AM EDT for Brown County, Ohio. It was in force for 42 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 17, 1997, 11:13 AM EDT (15:13 UTC)
Expired: Aug 17, 1997, 11:55 AM EDT
In force: 42 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Brown County, OH

What was reported inside it

Time	Report	Where	Remark
Aug 17, 11:30 AM EDT	Thunderstorm Wind 50	Georgetown, OH	Numerous 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 12:00Z, 3.2 hours before the alert went out and 55 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: 39 J/kg
Mixed-layer CIN: -211 J/kg
Mixed-layer LCL: 934 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 131 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 17, 9:23 AM EDT, 1 hour 50 minutes earlier.

Area forecast discussion, Aug 17, 9:23 AM EDT, 1 hour 50 minutes before

FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
920 AM EDT SUN AUG 17 1997

OUTFLOW BOUNDARY FROM LAST NIGHT HAS TEMPORARILY STABILIZED AREAS
ALONG/N OF OH RVR. AT THIS TIME...ONLY AREAS OF -RA ACRS CNTL/N
SECTIONS OF CWA. HOWEVER...WX WL DETERIORATE FROM W TO E THIS AM/EARLY
THIS AFTN. SFC WV HAS DEVELOPED ON OUFLOW BOUNDARY INVOF SE IL...AND
NUMEROUS TSRA HAVE DEVELOPED ACRS S IND WHERE SFC DWPTS IN MID 70S ARE
OVERUNNING OUTFLW BNDRY. THESE TSRA WL PUSH INTO CNTL/S SECTIONS OF CWA
THIS AM/EARLY PM WITH AT HEAVY DOWNPOURS...AND ISOLD SEVERE PSBL ACRS S
AS SS HELPS DESTABILIZE ATMOSPHERE.

MEANWHILE...MAIN SFC FRNT STILL LOCATED N OF CWA...PROGGED TO
SETTLE TWD S AND INTO N SECTIONS OF CWA THIS AFTN AS SFC LO IN E IA
TRACKS TWD REGION. SHRA/TSRA SHUD BECOME HEAVIER/MORE NUMEROUS ACRS
N HLF OF CWA DUE TO THIS FEATURE.

POTENTIAL FOR HVR RAFL EXISTS ACRS ENTIRE CWA THIS AFTN INTO TONITE...
AND ADDL FLASH FLOOD WATCHES (ALREADY IN PLACE FOR WAYNE/FAYETTE/UNION
COS IN E CNTL IN) APPR TO BE IN ORDER FOR REST OF CWA COUNTIES ALONG/N
OF OH RVR PER CURRNT TRENDS.

CATEGORICAL POPS IN ORDER ALL AREAS.

DUE TO RELATIVELY COOL START BEHIND OUTFLOW BOUNDARY AND INPENDING
ONSET OF ADDL PCPN...CURRNT FCST HI TMPS MAY BE A BIT TOO HI FOR MANY
LOCATIONS ALNG/N OF OH RVR...ESP RICH-DAY-LIMA. ACRS S CNTL OH/N KY...
STILL MAY CLIMB INTO UPR 80S...AND THREAT FOR PM SVR GREATEST THERE
PER LTST SPC DY1 OUTLOOK.

dROWLEY

In the hours before

Special weather statement, Aug 17, 5:25 AM EDT, 5 hours 48 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 16, 8:01 PM EDT	Flash Flood Warning	ILN	Putnam	3 hr
Aug 16, 10:53 PM EDT	Flash Flood Warning	ILN	Paulding, Putnam	3 hr
Aug 16, 11:47 PM EDT	Severe Thunderstorm Warning	ILN	Allen, Auglaize	48 min
Aug 17, 11:29 AM EDT	Severe Thunderstorm Warning	ILN	Adams	41 min
Aug 17, 11:47 AM EDT	Severe Thunderstorm Warning	ILN	Pike, Scioto	38 min
Aug 17, 12:25 PM EDT	Severe Thunderstorm Warning	ILN	Pike, Scioto	45 min
Aug 17, 2:17 PM EDT	Severe Thunderstorm Warning	ILN	Hamilton	58 min
Aug 17, 2:23 PM EDT	Tornado Warning	ILN	Licking	47 min
Aug 17, 2:41 PM EDT	Severe Thunderstorm Warning	ILN	Brown, Clermont	64 min
Aug 17, 3:03 PM EDT	Severe Thunderstorm Warning	ILN	Adams	62 min
Aug 17, 3:14 PM EDT	Tornado Warning	ILN	Adams	61 min
Aug 17, 3:29 PM EDT	Severe Thunderstorm Warning	ILN	Pike, Scioto	61 min
Aug 17, 7:17 PM EDT	Severe Thunderstorm Warning	ILN	Hamilton	48 min
Aug 17, 7:31 PM EDT	Severe Thunderstorm Warning	ILN	Butler	64 min
Aug 17, 7:31 PM EDT	Tornado Warning	ILN	Hamilton	64 min
Aug 17, 7:49 PM EDT	Severe Thunderstorm Warning	ILN	Clermont, Warren	66 min
Aug 17, 2:26 PM EDT	Severe Thunderstorm Warning	ILN	Pendleton	49 min
Aug 17, 2:54 PM EDT	Severe Thunderstorm Warning	ILN	Mason	46 min
Aug 17, 3:20 PM EDT	Severe Thunderstorm Warning	ILN	Lewis	60 min
Aug 17, 5:44 PM EDT	Severe Thunderstorm Warning	ILN	Owen	31 min
Aug 17, 1:35 PM EDT	Severe Thunderstorm Warning	ILN	Ripley	60 min
Aug 17, 6:52 PM EDT	Tornado Warning	ILN	Dearborn	33 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.