Alert archive / Ohio / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 280, NWS Wilmington, OH

September 20, 2000Brown County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Sep 20, 2000, 8:55 PM EDT for Brown County, Ohio. It was in force for 50 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: Sep 20, 2000, 8:55 PM EDT (00:55 UTC)
Expired: Sep 20, 2000, 9:45 PM EDT
In force: 50 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Brown County, OH

The radar

The Cincinnati radar (KILN), 54 km from the middle of the area, began a volume at 00:55 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
Sep 20, 9:10 PM EDT	Thunderstorm Wind 50 E	Higginsport, OH	Trees knocked down along US 52.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Sep 20, 5:00 PM EDT	Severe Thunderstorm Watch	SPC	6 hr
Sep 20, 8:30 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 00:00Z, 0.9 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: 579 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 1294 m above ground
0-6 km bulk shear: 73 kt
0-1 km storm-relative helicity: 628 m²/s²
0-3 km storm-relative helicity: 807 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 15.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KILN 210056
SVRILN
OHC015-210145-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
855 PM EDT WED SEP 20 2000

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BROWN COUNTY IN SOUTHWEST OHIO...

* UNTIL 945 PM EDT...

* AT 855 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 6 MILES WEST OF RIPLEY...OR ABOUT 7 MILES SOUTH
  OF GEORGETOWN...MOVING EAST AT 40 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  RIPLEY...
  GEORGETOWN...

IF SEVERE WEATHER APPROACHES YOUR AREA...GO INSIDE A STURDY SHELTER
AWAY FROM CREEK BEDS AND OTHER FLOOD PRONE AREAS. REMEMBER...A SEVERE
THUNDERSTORM CAN PRODUCE LARGE DAMAGING HAIL...DAMAGING WINDS IN
EXCESS OF 55 MPH...DEADLY LIGHTNING...AND VERY HEAVY RAIN.

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 Sep 20, 8:38 PM EDT, 17 minutes earlier.

Area forecast discussion, Sep 20, 8:38 PM EDT, 17 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
838 PM EDT WED SEP 20 2000

00Z SFC ANALYSIS SHOWS A COLD FRONT FROM NEAR CMH...EXTENDING TO ILN
AND EAST OF CVG.  SVR WEATHER ACTIV4ITY IS CEASING JUST BEHIND THE
FRONT.  WILL BE ISSUING AN UPDATE SOON TO CUT AWAY WATCH 744 FROM
THE WESTERN AREAS.  WATCH 744 WILL CONTINUE FOR EASTERN AREAS UNTIL
11 PM EDT.

.ILN...NONE.

HICKMAN

In the hours before

Local storm report, Sep 20, 5:01 PM EDT, 3 hours 54 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, OH
501 PM EDT WED SEP 20 2000

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

0345 PM    LOGAN                     OH   WIND DAMAGE
09/20/00   HOCKING                        TREE DOWN IN LOGAN

0350 PM    ROCKBRIDGE                OH   WIND DAMAGE
09/20/00   HOCKING                        TWO LARGE TREES DOWN JUST
                                          OUTSIDE OF
                                          ROCKBRIDGE

JDR

Local storm report, Sep 20, 6:24 PM EDT, 2 hours 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, OH
506 PM EDT WED SEP 20 2000

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

600 PM    RICHMOND                  IN   WIND DAMAGE
09/20/00   WAYNE                          TREES DOWN COUNTYWIDE

600 PM    CONNERSVILLE              IN   WIND DAMAGE
09/20/00   FAYETTE                        TREES DOWN COUNTYWIDE

MJDR

Local storm report, Sep 20, 7:22 PM EDT, 1 hour 33 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WILMINGTON, OH
506 PM EDT WED SEP 20 2000

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

630 PM    3 S EATON                 OH   65 MPH TSTM WIND GUST
09/20/00   PREBLE

630 PM    DAYTON                    OH   63 MPH TSTM WIND GUST
09/20/00   MONTGOMERY

0720 PM    TROY                      OH   WIND DAMAGE
09/20/00   MIAMI                          TREES DOWN COUNTYWIDE

JDR

Special weather statement, Sep 20, 8:50 PM EDT, 5 minutes before

INZ050-058-059-066-073>075-080-KYZ089>093-OHZ026-034-035-042>044-
051>053-060>062-070-071-077-210145-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
850 PM EDT WED SEP 20 2000

...SEVERE THUNDERSTORM WATCH NUMBER 744 CANCELLED FOR SOUTHEAST
INDIANA...PARTS OF SOUTHWEST AND WESTERN OHIO AND NORTH CENTRAL
KENTUCKY...

...THIS INCLUDES THE CITIES OF RICHMOND...DAYTON...CINCINNATI AND
CARROLLTON...

...SEVERE THUNDERSTORM WATCH NUMBER 744 CONTINUES FOR CENTRAL OHIO...
SOUTH CENTRAL OHIO AND PARTS OF NORTHERN KENTUCKY UNTIL 11 PM EDT...

AT 845 PM EDT...DOPPLER WEATHER RADAR INDICATED THAT THE LINE OF
THUNDERSTORMS RESPONSIBLE FOR SEVERE WEATHER EARLIER THIS EVENING
HAS MOVED INTO CENTRAL AND SOUTH CENTRAL OHIO AND PARTS OF
NORTHERN KENTUCKY.  THE THUNDERSTORMS WERE ALONG AND AHEAD OF A COLD
FRONT.  THE ATMOSPHERE HAS RAPIDLY STABILIZED BEHIND THE FRONT.
THUS...THE THREAT OF SEVERE WEATHER HAS ENDED ACROSS SOUTHEAST
INDIANA...PARTS OF SOUTHWEST AND WESTERN OHIO AND NORTH CENTRAL
KENTUCKY.

HICKMAN

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 20, 8:12 PM EDT	Severe Thunderstorm Warning	ILN	Brown	43 min
Sep 20, 8:23 PM EDT	Severe Thunderstorm Warning	ILN	Fayette	32 min
Sep 20, 8:34 PM EDT	Severe Thunderstorm Warning	ILN	Clermont	41 min
Sep 20, 8:39 PM EDT	Severe Thunderstorm Warning	ILN	Pickaway, Ross	66 min
Sep 20, 8:47 PM EDT	Severe Thunderstorm Warning	ILN	Highland	43 min
Sep 20, 8:50 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield, Licking	40 min
Sep 20, 9:14 PM EDT	Severe Thunderstorm Warning	ILN	Adams	61 min
Sep 20, 9:14 PM EDT	Severe Thunderstorm Warning	ILN	Pike	61 min
Sep 20, 9:24 PM EDT	Severe Thunderstorm Warning	ILN	Scioto	81 min
Sep 20, 9:25 PM EDT	Severe Thunderstorm Warning	ILN	Hocking	65 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2000 Every severe thunderstorm warning in 2000

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.