Alert archive / Indiana / Special Weather Statements in 2011

Special Weather Statement, NWS Louisville, KY

July 20, 2011Orange County, Indiana

NWS Louisville, KY issued this special weather statement at Jul 20, 2011, 1:43 AM EDT for Orange 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: Jul 20, 2011, 1:43 AM EDT (05:43 UTC)
Expired: Jul 20, 2011, 2:15 AM EDT
In force: 32 min
Issued by: NWS Louisville, KY

County Orange County, IN

The radar

The Louisville radar (KLVX), 68 km from the middle of the area, began a volume at 05:44 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, 5.7 hours before the alert went out and 244 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: 3968 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 867 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 49 m²/s²
0-3 km storm-relative helicity: 119 m²/s²
Significant tornado parameter: 1.0
Supercell composite: 5.1

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 Louisville, KY wrote its last area forecast discussion before this special weather statement went out at Jul 20, 1:15 AM EDT, 28 minutes earlier.

Area forecast discussion, Jul 20, 1:15 AM EDT, 28 minutes before

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Hazardous weather outlook, Jul 19, 10:50 PM EDT, 2 hours 53 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE LOUISVILLE KY
1050 PM EDT TUE JUL 19 2011

KYZ041>043-048-049-055>057-066-067-077-078-081-082-200900-
FAYETTE KY-BOURBON KY-NICHOLAS KY-JESSAMINE KY-CLARK KY-BOYLE KY-
GARRARD KY-MADISON KY-CASEY KY-LINCOLN KY-ADAIR KY-RUSSELL KY-
CUMBERLAND KY-CLINTON KY-
1050 PM EDT TUE JUL 19 2011 /950 PM CDT TUE JUL 19 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF EAST CENTRAL
KENTUCKY.

.DAY ONE...OVERNIGHT.

SCATTERED THUNDERSTORMS WILL BEGIN TO WEAKEN AFTER MIDNIGHT AND END
DURING THE EARLY MORNING HOURS. UNTIL THEN...STORMS WILL PRODUCE
EXCESSIVE LIGHTNING...TORRENTIAL RAIN AND WIND GUSTS UP TO 60 MPH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

WEDNESDAY...A STRONG UPPER LEVEL HIGH PRESSURE SYSTEM WILL START
TO BUILD IN FROM THE WEST. HEAT INDICES WILL RISE TO AROUND 100
DEGREES. THIS HEAT MAY ALLOW SOME ISOLATED THUNDERSTORMS TO FORM
LATER IN THE AFTERNOON.

THURSDAY THROUGH SUNDAY...THE HOTTEST AND MOST HUMID DAYS OF THIS
WEEK WILL BE THURSDAY AND FRIDAY AS IT CONTINUES TO BUILD INTO THE
AREA. THERE IS A SLIGHT CHANCE FOR STORMS TO POP-UP ON BOTH DAYS
IN THE AFTERNOON. SATURDAY HEAT INDICES WILL STILL REACH INTO THE
LOWER 100S BUT DOES NOT LOOK TO BE AS OPPRESSIVE AS DAYS BEFORE. FOR
SUNDAY...THE MAIN THREAT WILL BE AN EVEN HIGHER CHANCE FOR
THUNDERSTORMS IN THE AFTERNOON.

ON MONDAY...A COLD FRONT IS EXPECTED TO MOVE ACROSS OUR AREA WHICH
WILL SPARK SCATTERED THUNDERSTORMS WITHIN THE VERY WARM AND HUMID
AIR MASS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD REPORT ANY STRONG WIND AND LIGHTNING RELATED DAMAGE
AS WELL AS HEAVY RAIN OVERNIGHT.

INZ076>079-083-084-089>092-KYZ023>040-045>047-053-054-061>065-
070>076-200900-
ORANGE IN-WASHINGTON IN-SCOTT IN-JEFFERSON IN-DUBOIS IN-
CRAWFORD IN-PERRY IN-HARRISON IN-FLOYD IN-CLARK IN-HANCOCK KY-
BRECKINRIDGE KY-MEADE KY-OHIO KY-GRAYSON KY-HARDIN KY-BULLITT KY-
JEFFERSON KY-OLDHAM KY-TRIMBLE KY-HENRY KY-SHELBY KY-FRANKLIN KY-
SCOTT KY-HARRISON KY-SPENCER KY-ANDERSON KY-WOODFORD KY-NELSON KY-
WASHINGTON KY-MERCER KY-LARUE KY-MARION KY-BUTLER KY-EDMONSON KY-
HART KY-GREEN KY-TAYLOR KY-LOGAN KY-WARREN KY-SIMPSON KY-ALLEN KY-
BARREN KY-MONROE KY-METCALFE KY-
1050 PM EDT TUE JUL 19 2011 /950 PM CDT TUE JUL 19 2011/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
INDIANA AND CENTRAL KENTUCKY.

.DAY ONE...OVERNIGHT.

SCATTERED THUNDERSTORMS WILL BEGIN TO WEAKEN AFTER MIDNIGHT AND END
DURING THE EARLY MORNING HOURS. UNTIL THEN...STORMS WILL PRODUCE
EXCESSIVE LIGHTNING...TORRENTIAL RAIN AND WIND GUSTS UP TO 60 MPH.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

A STRONG UPPER LEVEL HIGH PRESSURE SYSTEM WILL BUILD IN FROM THE
WEST. HEAT INDICES WILL RISE TO THE 100 TO 110 DEGREE RANGE
WEDNESDAY AFTERNOON AND CONTINUE THROUGH SATURDAY. AN EXCESSIVE
HEAT WARNING HAS BEEN ISSUED FOR POINTS ALONG AND WEST OF THE
INTERSTATE 65 CORRIDOR...WHEREAS A HEAT ADVISORY HAS BEEN ISSUED
ALONG A LINE FROM CYNTHIANA TO FRANKFORT TO BURKESVILLE.

THE HEAT MAY ALLOW AN ISOLATED STORM OR TWO TO POP UP LATE
WEDNESDAY AFTERNOON.

THURSDAY THROUGH SUNDAY...THE HOTTEST AND MOST HUMID DAYS OF THIS
WEEK WILL BE THURSDAY AND FRIDAY AS IT CONTINUES TO BUILD INTO THE
AREA. THERE IS A SLIGHT CHANCE FOR STORMS TO POP- UP ON BOTH DAYS
IN THE AFTERNOON. SATURDAY HEAT INDICES WILL STILL REACH WELL INTO
THE LOWER 100S BUT DOES NOT LOOK TO BE AS OPPRESSIVE AS DAYS
BEFORE. FOR SUNDAY...THE MAIN THREAT WILL BE AN EVEN HIGHER CHANCE
FOR THUNDERSTORMS IN THE AFTERNOON.

ON MONDAY...A COLD FRONT IS EXPECTED TO MOVE ACROSS OUR AREA WHICH
WILL SPARK SCATTERED THUNDERSTORMS WITHIN THE VERY WARM AND HUMID
AIR MASS.

.SPOTTER INFORMATION STATEMENT...

SPOTTERS SHOULD REPORT ANY STRONG WIND AND LIGHTNING RELATED DAMAGE
AS WELL AS HEAVY RAIN OVERNIGHT.

11

In the hours before

Special weather statement, Jul 20, 12:47 AM EDT, 56 minutes before

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Local storm report, Jul 20, 12:50 AM EDT, 53 minutes before

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Special weather statement, Jul 20, 1:15 AM EDT, 28 minutes before

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Special weather statement, Jul 20, 1:17 AM EDT, 26 minutes before

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Special weather statement, Jul 20, 1:31 AM EDT, 12 minutes before

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Special weather statement, Jul 20, 1:43 AM EDT, 0 minutes before

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The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 19, 8:06 PM EDT	Special Weather Statement	LMK	Nicholas	24 min
Jul 19, 8:26 PM EDT	Severe Thunderstorm Warning	LMK	Bourbon	34 min
Jul 19, 9:35 PM EDT	Severe Thunderstorm Warning	LMK	Henry, Oldham, Trimble	25 min
Jul 19, 9:52 PM EDT	Special Weather Statement	LMK	Adair, Russell	23 min
Jul 19, 10:06 PM EDT	Special Weather Statement	LMK	Henry, Oldham, Shelby	24 min
Jul 19, 10:22 PM EDT	Severe Thunderstorm Warning	LMK	Oldham, Trimble	23 min
Jul 19, 10:36 PM EDT	Special Weather Statement	LMK	Oldham	24 min
Jul 19, 11:17 PM EDT	Special Weather Statement	LMK	Jefferson, Oldham	28 min
Jul 19, 11:45 PM EDT	Special Weather Statement	LMK	Jefferson	30 min
Jul 20, 12:08 AM EDT	Special Weather Statement	LMK	Hart	37 min
Jul 20, 12:47 AM EDT	Special Weather Statement	LMK	Meade	28 min
Jul 20, 1:17 AM EDT	Special Weather Statement	LMK	Meade	28 min
Jul 20, 1:31 AM EDT	Special Weather Statement	LMK	Breckinridge	29 min
Jul 20, 3:41 PM EDT	Special Weather Statement	LMK	Jefferson	34 min
Jul 20, 3:53 PM EDT	Heat Advisory	LMK	Bourbon, Boyle, Casey, Clark, Clinton, Fayette and 6 more	11 hr
Jul 20, 4:02 PM EDT	Severe Thunderstorm Warning	LMK	Jefferson	28 min
Jul 20, 4:06 PM EDT	Areal Flood Advisory	LMK	Jefferson	101 min
Jul 20, 4:39 PM EDT	Special Weather Statement	LMK	Jefferson	36 min
Jul 20, 4:58 PM EDT	Severe Thunderstorm Warning	LMK	Bullitt, Jefferson	12 min
Jul 20, 5:42 PM EDT	Special Weather Statement	LMK	Barren	33 min
Jul 19, 10:46 PM EDT	Special Weather Statement	LMK	Clark, Scott	29 min
Jul 19, 10:59 PM EDT	Special Weather Statement	LMK	Harrison	31 min
Jul 19, 11:46 PM EDT	Severe Thunderstorm Warning	LMK	Floyd, Harrison	29 min
Jul 19, 11:51 PM EDT	Special Weather Statement	LMK	Washington	24 min
Jul 20, 12:15 AM EDT	Special Weather Statement	LMK	Floyd	30 min
Jul 20, 1:15 AM EDT	Special Weather Statement	LMK	Orange	30 min

Nearby

Special Weather Statements in Indiana, 2011 Every special weather statement in 2011

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.