Alert archive / Ohio / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 9, NWS Wilmington, OH

January 5, 1997Madison County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jan 5, 1997, 12:49 AM EST for Madison County, Ohio. It was in force for 41 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
Jan 5, 1997, 12:49 AM EST (05:49 UTC)
Expired
Jan 5, 1997, 1:30 AM EST
In force
41 min
Issued by
NWS Wilmington, OH
Area
Whole counties

County Madison County, OH

What was reported inside it

TimeReportWhereRemark
Jan 5, 1:10 AM ESTThunderstorm Wind 50Big Plain, OH

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, 5.8 hours before the alert went out and 62 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-pSkew-T log-p diagram, Cncnati-Daytn, OH at 00:00Z on 1997-01-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cncnati-Daytn, OH at 00:00Z on 1997-01-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 325 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
753 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
325 m²/s²
0-3 km storm-relative helicity
436 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.

518 
WUUS01 KILN 050552 RRA
SVRILN
OHC047-097-071-050630-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
1249 AM EST SUN JAN 5 1997
 
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  130 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN CENTRAL OHIO
 
   ...FAYETTE COUNTY...MADISON COUNTY
 
IN SOUTHWEST OHIO
 
   ...HIGHLAND COUNTY
 
AT 1250 AM EST DOPPLER RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS
EXTENDING FROM EAST OF SPRINGFIELD TO EAST OF URBANA. THE STORMS WERE
MOVING EAST NORTHEAST AROUND 40 MPH AND WILL PRODUCE DAMAGING WINDS. THE
STORMS WILL CROSS LONDON...WASHINGTON COURT HOUSE AND HILLSBORO THROUGH
130 AM EST.
 
IT IS DANGEROUS TO BE OUTDOORS WHILE A SEVERE THUNDERSTORM IS IN
PROGRESS. DAMAGING WINDS...LARGE HAIL...VERY HEAVY RAIN...AND
DEADLY LIGHTNING ARE ALL POSSIBLE. SEEK SHELTER IN A BUILDING OR
A VEHICLE. IF YOU ARE CAUGHT IN THE OPEN...STAY AWAY FROM TOWERS
AND TALL TREES. CROUCH NEAR THE GROUND AND COVER YOUR HEAD.
 
FARINA

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 Jan 4, 8:31 PM EST, 4 hours 18 minutes earlier.

Area forecast discussion, Jan 4, 8:31 PM EST, 4 hours 18 minutes before
FORECAST COORDINATION MESSAGE
NATIONAL WEATHER SERVICE WILMINGTON OH
830 PM EST SAT JAN 4 1997

00Z SFC ANALYSIS INDICATED LOW PRES OVR LMICH WITH A CDFNT TRAILING SWD
ACROSS ERN IL SWWD INTO TX.  AHEAD OF THE FNT A NARROW AXIS OF 60+ DEW
POINTS EXISTED ACROSS WRN KY AND WRN IN.  IN THIS AREA...NMRS TRW WERE
MOVG TOWARD FA.  KILN SOUNDING WAS SLIGHTLY STABLE.  MODIFYING FOR
WORST CASE SCENARIO OF 60F DEW POINTS (NRN KY) GIVES A LI OF -1 AND
CAPES AROUND 250. THUS CONTINUE CHC TRW ALONG WITH -SHRA.  FROM DAY-CMH
NWD...TRW WL BE WDLY SCT SINCE INSTABILITY WL HARDLY EXIST. HOWEVER...
SUGGEST CONT MENTION OF TRW ALL ZONES.  WITH PW'S OF 1.13 RAINFALL
COULD BE HEAVY IN SPOTS.

ONLY OTHER CHANGE NEEDED IS TO INCREASE WINDS ACROSS NRN KY AND
INDICATE SWLY DIRECTION THROUGH MUCH OF NIGHT.

WILKINSON

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 4, 11:54 PM ESTSevere Thunderstorm WarningILNButler, Hamilton36 min
Jan 5, 12:01 AM ESTSevere Thunderstorm WarningILNClermont, Montgomery, Warren44 min
Jan 5, 12:25 AM ESTSevere Thunderstorm WarningILNChampaign, Clark35 min
Jan 5, 12:25 AM ESTSevere Thunderstorm WarningILNBrown, Clinton, Greene35 min
Jan 5, 12:43 AM ESTSevere Thunderstorm WarningILNClermont17 min
Jan 5, 12:49 AM ESTSevere Thunderstorm WarningILNFayette, Highland41 min
Jan 5, 1:12 AM ESTSevere Thunderstorm WarningILNFranklin48 min
Jan 5, 1:21 AM ESTSevere Thunderstorm WarningILNDelaware69 min
Jan 5, 1:21 AM ESTSevere Thunderstorm WarningILNPickaway69 min
Jan 5, 1:24 AM ESTSevere Thunderstorm WarningILNAdams66 min
Jan 5, 1:29 AM ESTSevere Thunderstorm WarningILNPike, Ross61 min
Jan 5, 1:47 AM ESTSevere Thunderstorm WarningILNScioto58 min
Jan 5, 1:47 AM ESTSevere Thunderstorm WarningILNFairfield, Hocking58 min
Jan 5, 1:47 AM ESTSevere Thunderstorm WarningILNLicking58 min

Nearby

Severe Thunderstorm Warnings in Ohio, 1997Every 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.