Alert archive / Ohio / Special Weather Statements in 2012

Special Weather Statement, NWS Wilmington, OH

August 5, 2012Butler County, Montgomery County, Preble County, Ohio; Franklin County, Indiana

NWS Wilmington, OH issued this special weather statement at Aug 5, 2012, 7:13 AM EDT for Butler County, Montgomery County, Preble County, Ohio; Franklin County, Indiana. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 5, 2012, 7:13 AM EDT (11:13 UTC)
Expired
Aug 5, 2012, 7:45 AM EDT
In force
32 min
Issued by
NWS Wilmington, OH

Counties Franklin County, IN, Butler County, OH, Montgomery County, OH, Preble County, OH

The radar

The Cincinnati radar (KILN), 58 km from the middle of the area, began a volume at 11:16 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 00:00Z, 11.2 hours before the alert went out and 59 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 2012-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3062 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 2012-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.1939Sfc1 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
3062 J/kg
Mixed-layer CIN
-5 J/kg
Mixed-layer LCL
842 m above ground
0-6 km bulk shear
18 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
135 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.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 5, 4:08 AM EDT, 3 hours 5 minutes earlier.

Area forecast discussion, Aug 5, 4:08 AM EDT, 3 hours 5 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE WILMINGTON OH
408 AM EDT SUN AUG 5 2012

.SYNOPSIS...
THUNDERSTORMS WILL MOVE THROUGH THE REGION AHEAD OF A VIGOROUS
COLD FRONT. THE FRONT WILL PUSH EAST OF THE AREA BY TONIGHT...USHERING
IN MORE SEASONABLE TEMPERATURES AND DRY CONDITIONS FOR THE FIRST
PART OF THE WORK WEEK.

&&

.NEAR TERM /UNTIL 6 PM THIS EVENING/...
PRE FRONTAL CONVECTION ADVANCING TOWARD FCST AREA...WITH EXPECTED
IMPACT PERIOD IN THE WEST BEFORE 10Z. BEST CHANCE FOR SEVERE
THUNDERSTORMS REMAINS GENERALLLY ALONG AND EAST OF INTERSTATE 71
AS ARRIVAL HERE COINCIDES WITH HEATING AND INCREASED INSTABILITY
AS ML CAPE VALUES INCREASE TO OVER 2000 J/KG. THIS ALONG WITH
DECENT LL LAPSE RATES CREATE A SEVERE WIND THREAT. VERY HIGH LL
MOISTURE ALSO CONTINUE THE HEAVY RAIN THREAT...THOUGH FORWARD
MOTION OF THUNDERSTORMS SHOULD LIMIT ANY FLOOD PROBLEMS TO
ISOLATED AREAS. BY 22Z...ONLY EASTERN FCST AREA CONTINUES
THUNDERSTORM THREAT.

&&

.SHORT TERM /6 PM THIS EVENING THROUGH WEDNESDAY/...
THUNDERSTORMS WIND DOWN IN THE 09Z-12Z TIMEFRAME WITH MORE
SEASONABLE AND DRIER AIRMASS UNDER RIDGE TO INFLUENCE AREA THROUGH
WED. INCREASING CLOUDS ON WED AHEAD OF NEXT APPROACHING S/WV.
TEMPS DO NOT INCREASE SIGNIFICANTLY THROUGH THE PERIOD UNDER
MOSTLY ZONAL FLOW.

&&

.LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/...
IN NORTHWEST FLOW PATTERN...SURFACE HIGH PRESSURE TO BUILD INTO THE
REGION IN WAKE OF COLD FRONT MONDAY...PROVIDING DRY WEATHER AND
COOLER TEMPERATURES. EXPECT TEMPERATURES TO BE NEAR SEASONABLE
VALUES DURING THE DAY.

THE HIGH PRESSURE AREA WILL REMAIN IN CONTROL OF OUR WEATHER INTO
MID WEEK...WITH TEMPERATURES MODERATING TO ABOVE NORMAL VALUES.

NUMERICAL MODELS GENERALLY SIMILAR WITH UPPER LEVEL RIDGE PERSISTING
OVER THE WEST AND ENERGY DROPPING SE FROM S CNTRL CANADA CARVING OUT
A TROF OVER THE GREAT LAKE BY LATE WEEK. WILL INTRODUCE CHC POPS FOR
SHOWERS AND THUNDERSTORMS THURSDAY AHD OF APPROACHING SFC WAVE WITH
THE BEST THREAT LOOKING TO BE ON FRIDAY WHEN FROPA IS EXPECTED TO
PASS THRU THE OHIO VALLEY.

IN CONTD NW FLOW...SFC HIGH PRESSURE TO NOSE INTO OHIO VALLEY NEXT
WEEKEND PROVIDING DRY WEATHER AND COOLER MORE SEASONABLE
TEMPERATURES.

&&

.AVIATION /08Z SUNDAY THROUGH THURSDAY/...
COMPLEX EXITING CENTRAL OHIO AND KCMH/KLCK TAF SITES IN THE NEXT
HOUR WITH VFR HIGH CLOUDS EXPECTED IN ITS WAKE AND A RETURN TO THE
SOUTHERLY WIND DIRECTION.

UNLESS EXPLOSIVE DEVELOPMENT OCCURS IN THE NEXT HOUR OR
TWO...DISCARDING THE GFS AND EUROPEAN IN FAVOR OF A CANADIEN/NAM
BLEND APPEARS TO HAVE THE BEST RESULTS FOR THE UPCOMING CONVECTION
ALONG AND IMMEDIATELY AHEAD OF THE NEXT FRONT WHICH WILL BEGIN AT
OR SLIGHTLY AFTER DAYBREAK FOR MOST OF CWA. TRIED TO LIMIT
PREVAILING THUNDERSTORMS TO A 3-4 HOUR TIME BLOCK AND CLEARED IT
OUT VERY QUICKLY BEHIND IT. NORTHERLY WINDS SET UP AND PUSH SOME
NICELY COOLER AND DRIER AIR TO THE REGION WITH A RAPID CLEARING.

.OUTLOOK...NO SIGNIFICANT WEATHER EXPECTED.

&&

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

&&

SYNOPSIS...JDR
NEAR TERM...JDR
SHORT TERM...JDR
LONG TERM...AR
AVIATION...FRANKS
Hazardous weather outlook, Aug 5, 3:44 AM EDT, 3 hours 29 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WILMINGTON OH
344 AM EDT SUN AUG 5 2012

INZ050-058-059-066-073>075-080-KYZ089>100-OHZ026-034-035-042>046-
051>056-060>065-070>074-077>082-088-060745-
WAYNE-FAYETTE IN-UNION IN-FRANKLIN IN-RIPLEY-DEARBORN-OHIO-
SWITZERLAND-CARROLL-GALLATIN-BOONE-KENTON-CAMPBELL-OWEN-GRANT-
PENDLETON-BRACKEN-ROBERTSON-MASON-LEWIS-HARDIN-MERCER-AUGLAIZE-DARKE-
SHELBY-LOGAN-UNION OH-DELAWARE-MIAMI-CHAMPAIGN-CLARK-MADISON-
FRANKLIN OH-LICKING-PREBLE-MONTGOMERY-GREENE-FAYETTE OH-PICKAWAY-
FAIRFIELD-BUTLER-WARREN-CLINTON-ROSS-HOCKING-HAMILTON-CLERMONT-BROWN-
HIGHLAND-ADAMS-PIKE-SCIOTO-
344 AM EDT SUN AUG 5 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL
INDIANA...SOUTHEAST INDIANA...NORTHEAST KENTUCKY...NORTHERN
KENTUCKY...CENTRAL OHIO...MIAMI VALLEY OF OHIO...SOUTH CENTRAL
OHIO...SOUTHWEST OHIO AND WEST CENTRAL OHIO.

.DAY ONE...TODAY AND TONIGHT.

WITH THE APPROACH OF A VIGOROUS COLD FRONT INTO THE AREA
TODAY...THERE IS A SLIGHT RISK FOR SEVERE THUNDERSTORMS. THE MAIN
THREAT WITH THESE STORMS WILL BE DAMAGING WINDS AND VERY HEAVY
RAIN...WITH THE POSSIBILITY OF LARGE HAIL.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUIRED.

In the hours before

Special weather statement, Aug 5, 6:26 AM EDT, 47 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
626 AM EDT SUN AUG 5 2012

INZ050-058-059-051100-
UNION IN-FAYETTE IN-WAYNE IN-
626 AM EDT SUN AUG 5 2012

...A STRONG THUNDERSTORM WILL AFFECT WAYNE...NORTHERN FAYETTE AND
NORTHERN UNION COUNTIES THROUGH 700 AM EDT...

AT 625 AM EDT...RADAR INDICATED A STRONG THUNDERSTORM 11 MILES WEST
OF BENTONVILLE THAT WAS NEARLY STATIONARY.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

IN ADDITION...HEAVY RAIN CAN BE EXPECTED WITH THIS STORM.

SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...RICHMOND...
HAGERSTOWN...FOUNTAIN CITY...DUBLIN...CENTERVILLE AND CAMBRIDGE CITY.

ALSO...MIDDLEBORO...JACKSONBURG...FRANKLIN...WILLIAMSBURG...BETHEL...
WHITEWATER...SPRING GROVE AND MOUNT AUBURN ARE NEAR THE PATH OF THIS
STRONG THUNDERSTORM.

WATER WILL POND ON ROADS AND MAY QUICKLY FILL ROADSIDE DITCHES AND
SMALL STREAMS.

LAT...LON 3980 8523 3987 8522 3988 8521 4000 8521
      4000 8481 3970 8482 3970 8530 3979 8531
Special weather statement, Aug 5, 6:29 AM EDT, 44 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
629 AM EDT SUN AUG 5 2012

OHZ026-035-043-044-051115-
AUGLAIZE OH-HARDIN OH-LOGAN OH-SHELBY OH-
629 AM EDT SUN AUG 5 2012

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN SHELBY...NORTHERN
LOGAN...HARDIN AND EASTERN AUGLAIZE COUNTIES THROUGH 715 AM EDT...

AT 625 AM EDT...RADAR INDICATED A STRONG THUNDERSTORM NEAR
MAPLEWOOD...MOVING NORTHEAST AT 50 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

IN ADDITION...FREQUENT CLOUD TO GROUND LIGHTNING AND HEAVY RAIN CAN
BE EXPECTED WITH THIS STORM.

SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...LAKEVIEW...RUSSELLS
POINT...WAYNESFIELD...BELLE CENTER...ALGER...KENTON...DUNKIRK AND
FOREST.

ALSO...BLOOM CENTER...ST. JOHNS...LEWISTOWN...MCMORRAN...
HUNTSVILLE...ROUNDHEAD...NORTHWOOD AND RUSHSYLVANIA ARE NEAR THE PATH
OF THIS STRONG THUNDERSTORM.

DO NOT STAY IN THE OPEN NOR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS. MOVE INDOORS WHEN A THUNDERSTORM APPROACHES. WATER WILL
POND ON ROADS AND MAY QUICKLY FILL ROADSIDE DITCHES AND SMALL
STREAMS.

RESIDENTS IN THESE AREAS SHOULD REMAIN ALERT. IF THIS STORM BECOMES
STRONGER...THEN A WARNING MAY BE NEEDED.

LAT...LON 4082 8349 4071 8349 4071 8344 4068 8341
      4056 8341 4028 8402 4046 8422 4065 8394
      4065 8389 4069 8389 4083 8368 4082 8350
Special weather statement, Aug 5, 6:31 AM EDT, 42 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
631 AM EDT SUN AUG 5 2012

INZ050-058-059-051100-
UNION IN-FAYETTE IN-WAYNE IN-
631 AM EDT SUN AUG 5 2012

...A STRONG THUNDERSTORM WILL AFFECT WAYNE...NORTHERN FAYETTE AND
NORTHERN UNION COUNTIES THROUGH 700 AM EDT...

AT 625 AM EDT...RADAR INDICATED A STRONG THUNDERSTORM 11 MILES WEST
OF BENTONVILLE THAT WAS MOVING EAST AT 50 MPH.

WIND GUSTS TO 40 MPH ARE POSSIBLE WITH THIS STORM.

IN ADDITION...HEAVY RAIN CAN BE EXPECTED WITH THIS STORM.

SOME LOCATIONS THAT MAY BE AFFECTED INCLUDE...RICHMOND...
HAGERSTOWN...FOUNTAIN CITY...DUBLIN...CENTERVILLE AND CAMBRIDGE CITY.

ALSO...MIDDLEBORO...JACKSONBURG...FRANKLIN...WILLIAMSBURG...BETHEL...
WHITEWATER...SPRING GROVE AND MOUNT AUBURN ARE NEAR THE PATH OF THIS
STRONG THUNDERSTORM.

WATER WILL POND ON ROADS AND MAY QUICKLY FILL ROADSIDE DITCHES AND
SMALL STREAMS.

LAT...LON 3980 8523 3987 8522 3988 8521 4000 8521
      4000 8481 3970 8482 3970 8530 3979 8531
Special weather statement, Aug 5, 7:13 AM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 8:38 PM EDTSevere Thunderstorm WarningILNDarke, Mercer67 min
Aug 4, 9:01 PM EDTSevere Thunderstorm WarningILNAuglaize, Shelby59 min
Aug 4, 9:31 PM EDTSevere Thunderstorm WarningILNAuglaize, Hardin, Logan, Shelby59 min
Aug 5, 12:00 AM EDTSpecial Weather StatementILNDelaware30 min
Aug 5, 6:29 AM EDTSpecial Weather StatementILNHardin46 min
Aug 5, 6:37 AM EDTSevere Thunderstorm WarningILNAuglaize, Hardin, Logan, Shelby42 min
Aug 5, 6:40 AM EDTAreal Flood AdvisoryILNDarke, Shelby2 hr
Aug 5, 7:15 AM EDTAreal Flood AdvisoryILNAuglaize, Mercer3 hr
Aug 5, 7:17 AM EDTSpecial Weather StatementILNLogan43 min
Aug 5, 7:55 AM EDTAreal Flood AdvisoryILNHardin, Logan3 hr
Aug 5, 8:05 AM EDTSpecial Weather StatementILNHardin25 min
Aug 5, 7:52 PM EDTAreal Flood AdvisoryILNBracken, Pendleton3 hr
Aug 4, 9:20 PM EDTSpecial Weather StatementILNWayne40 min
Aug 5, 6:26 AM EDTSpecial Weather StatementILNWayne34 min
Aug 5, 6:31 AM EDTSpecial Weather StatementILNWayne29 min

Nearby

Special Weather Statements in Ohio, 2012Special Weather Statements in Indiana, 2012Every special weather statement in 2012

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.