Alert archive / Ohio / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 64, NWS Wilmington, OH

June 1, 20094 counties in Ohio

NWS Wilmington, OH issued this severe thunderstorm warning at Jun 1, 2009, 10:20 AM EDT for 4 counties in Ohio. It was in force for 25 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jun 1, 2009, 10:20 AM EDT (14:20 UTC)
Expired
Jun 1, 2009, 10:45 AM EDT
In force
25 min
Issued by
NWS Wilmington, OH
Area
Storm-based polygon

Counties Clark County, OH, Fayette County, OH, Greene County, OH, Madison County, OH

The radar

The Cincinnati radar (KILN), 42 km from the middle of the area, began a volume at 14:20 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.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 2.3 hours before the alert went out and 40 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 12:00Z on 2009-06-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2009-06-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 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
1714 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
172 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 Jun 1, 8:09 AM EDT, 2 hours 11 minutes earlier.

Area forecast discussion, Jun 1, 8:09 AM EDT, 2 hours 11 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
809 AM EDT MON JUN 1 2009

.SYNOPSIS...
LOW PRESSURE WILL MOVE ACROSS THE LOWER GREAT LAKES TODAY...WHICH
WILL DRAG A COLD FRONT INTO THE AREA THIS EVENING. THE FRONT WILL
LIFT BACK NORTH ON TUESDAY AS A WAVE OF LOW PRESSURE TRACKS ALONG
IT. THE FRONT WILL THEN PUSH SOUTH THROUGH THE AREA ON WEDNESDAY.

&&

.NEAR TERM /THROUGH TONIGHT/...
UPDATING FORECAST TO ACCOUNT FOR A QUICKER LINE OF STORMS MOVING
THROUGH NRN CWA EARLY THIS MORNING. THIS IS ABOUT 6 HOURS FASTER
THAN THE MODELS WERE SAYING...AND APPEARS TO BE THE ONLY SHOT FOR
THE MORNING HOURS. SOME ISOLATED SHOWERS MAY BE FOUND BEHIND
IT EARLY THIS AFTERNOON. THIS LINE OF SHOWERS SHOULD LAY OUT A
FRONTAL BOUNDARY THAT WILL BECOME A FOCUS FOR MORE SHOWERS AND
STORMS LATER THIS AFTERNOON AND INTO THE EVENING.

&&

.SHORT TERM /TUESDAY THROUGH WEDNESDAY NIGHT/...
FRONT WILL LIFT BACK NORTH ON TUESDAY AS LOW PRESSURE RIDES ALONG
THE BOUNDARY. SO MOST IF NOT ALL OF THE FORECAST AREA WILL BE IN
THE WARM SECTOR. BOTH TEMPERATURES AND DEW POINTS ARE FORECAST TO
BE HIGHER TOMORROW. SO EXPECT A BIT MORE INSTABILITY COMPARED TO
TODAY. THUS EVEN THOUGH THE PRIMARY FOCUS WILL BE ON THE NORTHERN
FRINGES...IT APPEARS THAT ISOLATED TO SCATTERED STORMS MAY DEVELOP
ANYWHERE ACROSS THE REGION.

ANY ACTIVITY THAT DOES DEVELOP WILL CONTINUE INTO THE EVENING
BEFORE DIMINISHING. MAY GET ANOTHER INCREASE IN SHOWERS AND
THUNDERSTORMS LATE TUESDAY NIGHT IN THE NORTHWEST ZONES AS A SHORT
WAVE APPROACHES AND THE FRONT BEGINS TO MOVE BACK INTO THE AREA.

A SHORT WAVE WILL MOVE ACROSS THE REGION ON WEDNESDAY WHICH WILL
PUSH THE FRONT THROUGH THE ENTIRE AREA. SHOWERS AND THUNDERSTORMS
SHOULD BECOME NUMEROUS AND HAVE RAISED POPS TO LIKELY. ADDITIONAL
SHORT WAVE ENERGY MOVING THROUGH NEARLY ZONAL FLOW WILL KEEP THE
CHANCE OF SHOWERS INTO WEDNESDAY NIGHT.

USED A MOS BLEND FOR TEMPERATURES THROUGHOUT.

&&

.LONG TERM /THURSDAY THROUGH SUNDAY/...
SOME SHOWERS MAY LINGER INTO THURSDAY IN THE SOUTHERN ZONES BEFORE
FINALLY MOVING OFF TO THE SOUTH AND EAST AS HIGH PRESSURE BUILDS
IN. A WEAK DISTURBANCE WILL MOVE THROUGH ON FRIDAY ALTHOUGH IT
APPEARS TO BE MOISTURE STARVED. THEN THE HIGH WILL BECOME
REESTABLISHED FOR SATURDAY. A DEVELOPING WARM FRONT WILL BRING THE
NEXT CHANCE OF SHOWERS AND THUNDERSTORMS ON SUNDAY.

&&

.AVIATION /12Z MONDAY THROUGH FRIDAY/...
CONVECTIVE COMPLEX SLIDING JUST NORTH OF TAF SITES. EXPECT SOME
MID AND HIGH CLOUDS BUT BELIEVE PRECIP WILL STAY NORTH BUT WILL BE
CLOSE AT DAT. SOME THINING DURING AFTERNOON BUT SOME CU SHOULD
DEVELOP. ANOTHER ROUND OF SHRA/TSRA SHOULD AGAIN BE MAINLY NORTH
OF TAF SITES THIS EVENING. WILL MENTION POSSIBILITY IN DAY/CMH
AREA. EXPECT FOG WILL DEVELOP LATE TONIGHT TO SUNRISE TUESDAY WITH
INCREASING DEW POINTS AND LIGHT WINDS.

OUTLOOK...THERE WILL BE A CHANCE OF THUNDERSTORMS TUESDAY NIGHT
THROUGH THURSDAY.

&&

.ILN WATCHES/WARNINGS/ADVISORIES...
OH...NONE.
KY...NONE.
IN...NONE.

&&

SYNOPSIS...
NEAR TERM...FRANKS
SHORT TERM...
LONG TERM...
AVIATION...
Hazardous weather outlook, Jun 1, 5:00 AM EDT, 5 hours 20 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON OH
500 AM EDT MON JUN 1 2009

INZ050-058-059-OHZ026-034-035-042>046-051>056-060>062-020900-
WAYNE-FAYETTE IN-UNION IN-HARDIN-MERCER-AUGLAIZE-DARKE-SHELBY-LOGAN-
UNION OH-DELAWARE-MIAMI-CHAMPAIGN-CLARK-MADISON-FRANKLIN OH-LICKING-
PREBLE-MONTGOMERY-GREENE-
500 AM EDT MON JUN 1 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL
INDIANA...CENTRAL OHIO...MIAMI VALLEY OF OHIO AND WEST CENTRAL OHIO.

.DAY ONE...TODAY AND TONIGHT.

A FEW SEVERE THUNDERSTORMS ARE POSSIBLE LATE THIS AFTERNOON AND
EVENING.

THE ATMOSPHERE WILL BECOME MODERATELY UNSTABLE THIS AFTERNOON. AS
A COLD FRONT APPROACHES LATE IN THE DAY...SHOWERS AND
THUNDERSTORMS MAY DEVELOP INTO THE AREA. STORMS ARE EXPECTED TO
INCREASE IN COVERAGE INTO THE EVENING AS THE FRONT SLOWLY SAGS
SOUTHWARD. THERE MAY BE ENOUGH INSTABILITY INTO THE EVENING FOR A
FEW OF THE STORMS TO REACH SEVERE LIMITS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED LATE THIS AFTERNOON AND EVENING.

INZ066-073>075-080-KYZ089>100-OHZ063>065-070>074-077>082-088-020900-
FRANKLIN IN-RIPLEY-DEARBORN-OHIO-SWITZERLAND-CARROLL-GALLATIN-BOONE-
KENTON-CAMPBELL-OWEN-GRANT-PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-
FAYETTE OH-PICKAWAY-FAIRFIELD-BUTLER-WARREN-CLINTON-ROSS-HOCKING-
HAMILTON-CLERMONT-BROWN-HIGHLAND-ADAMS-PIKE-SCIOTO-
500 AM EDT MON JUN 1 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHEAST INDIANA...NORTHEAST
KENTUCKY...NORTHERN KENTUCKY...CENTRAL OHIO...SOUTH CENTRAL OHIO
AND SOUTHWEST OHIO.

.DAY ONE...TODAY AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Jun 1, 8:23 AM EDT, 1 hour 57 minutes before
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Local storm report, Jun 1, 8:45 AM EDT, 1 hour 35 minutes before
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Local storm report, Jun 1, 8:54 AM EDT, 1 hour 26 minutes before
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Local storm report, Jun 1, 9:06 AM EDT, 1 hour 14 minutes before
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

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

IssuedProductOfficeCountiesLasted
Jun 1, 8:08 AM EDTSevere Thunderstorm WarningILNMercer39 min
Jun 1, 8:20 AM EDTSevere Thunderstorm WarningILNMercer40 min
Jun 1, 8:29 AM EDTSevere Thunderstorm WarningILNAuglaize, Darke, Shelby46 min
Jun 1, 9:07 AM EDTSevere Thunderstorm WarningILNChampaign, Logan, Miami, Shelby38 min
Jun 1, 7:39 PM EDTSevere Thunderstorm WarningILNHardin51 min

Nearby

Severe Thunderstorm Warnings in Ohio, 2009Every severe thunderstorm warning in 2009

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.