Alert archive / Ohio / Severe Thunderstorm Warnings in 2000

Severe Thunderstorm Warning 52, NWS Wilmington, OH

May 23, 2000Union County, Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at May 23, 2000, 4:11 PM EDT for Union County, Ohio. It was in force for 34 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: May 23, 2000, 4:11 PM EDT (20:11 UTC)
Expired: May 23, 2000, 4:45 PM EDT
In force: 34 min
Issued by: NWS Wilmington, OH
Area: Whole counties

County Union County, OH

The radar

The Cincinnati radar (KILN), 105 km from the middle of the area, began a volume at 20:15 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
May 23, 4:23 PM EDT	Hail 0.75	Raymond, 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 12:00Z, 8.2 hours before the alert went out and 103 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: 94 J/kg
Mixed-layer CIN: -72 J/kg
Mixed-layer LCL: 930 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 234 m²/s²
0-3 km storm-relative helicity: 327 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

The text

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

876 
WUUS51 KILN 232011
SVRILN
OHC159-232045-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
411 PM EDT TUE MAY 23 2000

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  UNION COUNTY IN CENTRAL OHIO...

* UNTIL 445 PM EDT...

* AT 411 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES NORTHWEST OF MARYSVILLE...MOVING EAST
  AT 35 MPH.

* SOME LOCATIONS NEAR THE PATH OF THIS STORM INCLUDE...
  MARYSVILLE...

THIS IS A DANGEROUS STORM...CAPABLE OF PRODUCING VERY LARGE HAIL AND
DAMAGING WINDS. IF YOU ARE IN THE STORMS PATH...TAKE COVER IN A
STURDY STRUCTURE UNTIL THE STORM PASSES.

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.

.END/TPJ

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 May 23, 2:40 PM EDT, 1 hour 31 minutes earlier.

Area forecast discussion, May 23, 2:40 PM EDT, 1 hour 31 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
240 PM EDT TUE MAY 23 2000

17Z SFC ANALYSIS INDICATED A WIND SHIFT LINE ALONG THE IN-IL BORDER
WITH DRIER AIR BEHIND IT. DECENT CONVERGENCE WAS INDICATED AHEAD OF
THE WIND SHIFT LINE RUNNING FROM NR AOH SW INTO SERN IL.  ANOTHER
CONVERGENCE AREA WAS APPARENT OVR NRN IN ON THE VIS IMAGERY.
TEMPS AND DEWPOINTS WERE CLIMBING ACROSS THE OH VLY CREATING
MODERATE TO STRONG INSTABILITY.  IF STORMS GET GOING ALONG ANY OF
THESE CONVERGENT LINES THEY MAY BECOME SVR DUE TO INSTABILITY AND
IMPRESSIVE H2 JET AND ASSOCIATED DIVERGENCE.

THE WIND SHIFT SHOULD MAKE IT INTO WRN FA TONIGHT BEFORE WASHING
OUT.  SOMEWHAT DRIER AIR WL PUSH INTO FA BUT DO NOT XPCT SFC
DEWPOINTS TO DROP TOO MUCH.  HOWEVER...VERY LOW K-INDICES ARE PROGD
ACROSS FA.  THUS...AFTER THIS EVENINGS ACTIVITY DO NOT XPCT ANY
SHRA/TSRA OVERNIGHT.

MODELS CONTINUE THEIR TREND OF DIVERGING ON WED.  WL GO WITH THE
MORE MOIST AND UNSTABLE SCENARIO (AVN/NGM) AND LEAVE THE CHC
SHRA/TSRA IN ALL GROUPS.

MOS GUIDANCE TEMPS LOOK REASONABLE THROUGH THE PERIOD XPCT FOR BEING
A LITTLE TOO HIGH ON WED.

DRY CONDITIONS WL RETURN TO FA FOR WED NIGHT THROUGH FRI NIGHT.
WARM FRONT PROGD TO RETURN INTO THE OH VLY ON FRI NIGHT.  THEN A
CDFNT SHOULD SWEEP THROUGH ON SAT BRINGING CHC SHRA/TSRA.

.ILN...NONE.

WILKINSON

In the hours before

Special weather statement, May 23, 11:02 AM EDT, 5 hours 9 minutes before

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-232000-

SEVERE WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON OH
1102 AM EDT TUE MAY 23 2000

...SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON AND TONIGHT...

THE STORM PREDICTION CENTER IN NORMAN OKLAHOMA HAS PLACED MUCH
OF OHIO...NORTHERN KENTUCKY...AND SOUTHEASTERN INDIANA IN A SLIGHT
RISK OF SEVERE THUNDERSTORMS FOR THIS AFTERNOON AND EVENING.

A WEAK COLD FRONT ACROSS ILLINOIS THIS MORNING WILL PUSH EASTWARD
INTO WESTERN OHIO AND SOUTHEAST INDIANA BY THIS AFTERNOON.  WARM AND
MOIST CONDITIONS TO THE SOUTH AND EAST OF THE FRONT WILL PROVIDE AN
UNSTABLE ENVIRONMENT ACROSS THE OHIO VALLEY. AN UPPER LEVEL
DISTURBANCE IS EXPECTED TO PUSH INTO THE AREA BY LATE AFTERNOON
AND IS EXPECTED TO ACTIVATE THE FRONTAL SYSTEM.

THUNDERSTORMS WILL SPREAD INTO THE RISK AREA THIS AFTERNOON AND
SHOULD BECOME MOST NUMEROUS BY LATE AFTERNOON.  THE MAIN THREAT
FROM THESE STORMS SHOULD BE LARGE HAIL AND STRONG DAMAGING WINDS.

EMERGENCY MANAGERS SHOULD TAKE PRECAUTIONS FOR POSSIBLE SEVERE
THUNDERSTORMS THIS AFTERNOON.  ALSO...STORM SPOTTERS MAY BE NEEDED
THIS AFTERNOON.

.END/WILKINSON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 23, 4:41 PM EDT	Severe Thunderstorm Warning	ILN	Delaware	49 min
May 23, 4:46 PM EDT	Severe Thunderstorm Warning	ILN	Franklin	44 min
May 23, 5:28 PM EDT	Severe Thunderstorm Warning	ILN	Franklin	32 min
May 23, 5:32 PM EDT	Severe Thunderstorm Warning	ILN	Licking	58 min
May 23, 5:45 PM EDT	Severe Thunderstorm Warning	ILN	Greene, Montgomery	60 min
May 23, 6:15 PM EDT	Severe Thunderstorm Warning	ILN	Fairfield	45 min
May 23, 6:23 PM EDT	Severe Thunderstorm Warning	ILN	Madison	52 min
May 23, 6:45 PM EDT	Severe Thunderstorm Warning	ILN	Fayette	45 min
May 23, 7:14 PM EDT	Severe Thunderstorm Warning	ILN	Ross	46 min
May 23, 7:58 PM EDT	Tornado Warning	ILN	Ross	32 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.