Alert archive / Indiana / Special Weather Statements in 2010

Special Weather Statement, NWS Indianapolis, IN

August 11, 2010Delaware County, Randolph County, Indiana

NWS Indianapolis, IN issued this special weather statement at Aug 11, 2010, 8:21 AM EDT for Delaware County, Randolph County, Indiana. It was in force for 54 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 11, 2010, 8:21 AM EDT (12:21 UTC)
Expired
Aug 11, 2010, 9:15 AM EDT
In force
54 min
Issued by
NWS Indianapolis, IN

Counties Delaware County, IN, Randolph County, IN

The radar

The Indianapolis radar (KIND), 116 km from the middle of the area, began a volume at 12:22 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, 0.4 hours before the alert went out and 144 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 2010-08-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2143 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 12:00Z on 2010-08-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
2143 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
995 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
64 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 Indianapolis, IN wrote its last area forecast discussion before this special weather statement went out at Aug 11, 7:00 AM EDT, 1 hour 21 minutes earlier.

Area forecast discussion, Aug 11, 7:00 AM EDT, 1 hour 21 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
700 AM EDT WED AUG 11 2010

.UPDATE...

THE AVIATION SECTION HAS BEEN UPDATED BELOW.

&&

.SYNOPSIS...

A DIFFUSE FRONTAL BOUNDARY IS EXPECTED TO LINGER ACROSS THE AREA
THROUGH THE END OF THE WORK WEEK. A STRONGER COLD FRONT IS EXPECTED
TO PUSH THROUGH OVER THE WEEKEND. HIGH PRESSURE WILL THEN BUILD
ACROSS THE REGION THROUGH EARLY NEXT WEEK.

&&

.NEAR TERM /TODAY/...

FORECAST FOCUS FOR THE NEAR AND SHORT TERM CONTINUES TO BE ON
TEMPERATURES AND THUNDERSTORM CHANCES.

ANALYSIS AS OF 3 AM THIS MORNING DEPICTS A STALLED FRONTAL BOUNDARY
DRAPED ACROSS CENTRAL ILLINOIS AND INDIANA. SHOWER AND THUNDERSTORM
ACTIVITY HAS WANED SIGNIFICANTLY OVERNIGHT WITH THE LOSS OF DAYTIME
HEATING. MEANWHILE A WEAK UPPER TROUGH POSITIONED OVER THE UPPER MS
VALLEY WILL SHIFT EASTWARD THROUGH EARLY TODAY AND WEAKEN AS IT
APPROACHES THE GREAT LAKES. THE COLD FRONT WITH THIS FEATURE SHOULD
REMAIN TO THE NORTH OF THE FORECAST AREA...KEEPING THE ASSOCIATED
SHOWERS AND THUNDERSTORMS GENERALLY OUT OF THE AREA...THOUGH IT
IS POSSIBLE SOME OF THIS ACTIVITY MAY CROSS OVER.

IN TERMS OF MODEL CONSENSUS THERE SEEMS TO BE BETTER AGREEMENT WITH
REGARD TO TEMPERATURES...THE GFS IS NOW ONLY SLIGHTLY WARMER THAN
THE NAM. SHOWER/THUNDERSTORM ACTIVITY WILL BE SIMILAR TO
TUESDAY...NOT WIDESPREAD IN COVERAGE, VERY HIT OR MISS...BUT HEAVY
RAIN IS POSSIBLE IN ANY OF THE TRAINING THUNDERSTORMS AS PWAT'S
CONTINUE TO RUN NEAR 2" AND STORM MOTION REMAINS LESS THAN 10 KTS.

BASED ON PERSISTENCE LEANED TOWARD THE SLIGHTLY WARMER GFS FOR TEMPS
TODAY. BELIEVE THAT DESPITE THE CHANCES FOR THUNDER AND PARTLY SUNNY
CLOUD COVER...LLVL THICKNESSES INDICATE WE WILL SEE TEMPS VERY
SIMILAR TO WED...LOW 90S NORTH TO UPPER 90S SOUTH. THIS COUPLED WITH
HIGH DEWPOINTS IN THE MID 70S WILL ONCE AGAIN PUSH US OVER TO HEAT
WARNING/ADVISORY CRITERIA FOR ANOTHER DAY. AN EXCESSIVE HEAT
WARNING WAS ISSUED FOR MARION COUNTY AND SOUTHWARD...WITH
ADVISORIES FOR THE REST OF THE NORTHERN COUNTIES.

&&

.SHORT TERM /TONIGHT THROUGH FRIDAY NIGHT/...

THE AFOREMENTIONED HEAT WARNINGS/ADVISORIES HAVE BEEN CARRIED
THROUGH UNTIL THURSDAY EVENING. OVERNIGHT TEMPERATURES ARE NOT
EXPECTED TO FALL BELOW THE MID TO UPPER 70S...AGAIN SIMILAR TO
TUE NIGHT...AND THICKNESS SCHEMES INDICATE THAT THU WILL BE ALMOST
JUST AS HOT AS WED. PRECIP CHANCES LOOK LOWER AS WELL...AS THERE
IS LITTLE FORCING WITH THE LINGERING BOUNDARY TO PRODUCE
CONVECTION. STILL A LOW CHANCE WILL BE CONTINUE INTO THU
AFTERNOON/EVENING. AGAIN THIS IS NOT EXPECTED TO IMPACT THE
SOARING TEMPS MUCH.

BOUNDARY FINALLY DROPS SOUTH OF THE INDIANA ON FRIDAY, PROVIDING A
DRY FORECAST TO THE END OF THE WORK WEEK. HOWEVER...TEMPS CONTINUE
TO BE AN ISSUE...ALBEIT NOT QUITE AS HOT/HUMID AS DEW POINTS FALL
INTO THE LOW 70S. A HEAT ADVISORY MAY LIKELY BE NEEDED FOR MANY
LOCATIONS ON FRIDAY...AND POSSIBLY WARNINGS ACROSS THE FAR SOUTH.

&&

.LONG TERM /SATURDAY THROUGH NEXT TUESDAY/...

ENSEMBLE DATA SUGGEST FAIRLY SIGNIFICANT TROUGHING FOR THIS TIME
OF YEAR WILL DROP INTO THE NORTHERN PLAINS AND GREAT LAKES OVER
THE WEEKEND AND SHOULD LINGER INTO EARLY NEXT WEEK. WILL CONTINUE
WITH CHANCE POPS SATURDAY AND SUNDAY AS A COLD FRONT ASSOCIATED
WITH THE DEVELOPING UPPER TROUGH WILL BE MOVING THROUGH AT THAT
TIME. CONSIDERING THE STRENGTH OF THE UPPER TROUGH...FRONT SHOULD
HAVE A GOOD PUSH WITH IT. ENSEMBLE DATA SUGGEST BY MONDAY AND
TUESDAY...FRONT SHOULD BE FAR ENOUGH SOUTHEAST OF THE AREA TO END
THE RAIN THREAT AS A MORE STABLE AIR MASS FILTERS IN BEHIND THE
FRONT.

&&

.AVIATION /DISCUSSION FOR THE 11/12Z TAFS/...

FLUCTUATING VISIBILITIES HAVE LARGELY RECOVERED TO VFR OR HIGH END
MVFR...SAVE FOR HUF WHERE IFR CONDITIONS AND RECENT LIFR CONDITIONS
HAVE BEEN OCCURRING. VISIBILITIES WILL IMPROVE IN TYPICAL DIURNAL
FASHION THIS MORNING...AND ADDITIONAL FOG IS POSSIBLE TONIGHT.
HOWEVER...THIS IS HIGHLY DEPENDENT ON THE INFLUENCE OF CONVECTION
TODAY AND TONIGHT...AND PREDICTABILITY THIS FAR OUT IS LIMITED AT
BEST...SO WILL ONLY HINT AT THIS WITH 6SM BR AFTER 00Z TONIGHT.

WHAT MAY BE JUST A FIRST ROUND OF CONVECTION HAS ALREADY BROKEN OUT
THIS MORNING IN WESTERN ILLINOIS AND NORTH/NORTH CENTRAL INDIANA. AS
SUCH...HAVE INCLUDED CBS AND/OR VCTS WHERE APPROPRIATE...ESPECIALLY
AT LAF/HUF EARLY...WITH OTHER SITES FOLLOWING SUIT LATER IN THE DAY
AND CONTINUING THIS EVENING.

&&

.IND WATCHES/WARNINGS/ADVISORIES...

EXCESSIVE HEAT WARNING FROM 11 AM THIS MORNING TO 8 PM EDT
THURSDAY FOR INZ043>047-051>056-060>065-067>072.

HEAT ADVISORY FROM 11 AM THIS MORNING TO 8 PM EDT THURSDAY FOR
INZ021-028>031-035>042-048-049-057.

&&

SYNOPSIS...SMF
NEAR TERM...SMF
SHORT TERM...SMF
LONG TERM....JAS
AVIATION...NIELD
Hazardous weather outlook, Aug 11, 3:47 AM EDT, 4 hours 34 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
347 AM EDT WED AUG 11 2010

INZ043>047-051>056-060>065-067>072-120800-
VERMILLION-PARKE-PUTNAM-HENDRICKS-MARION-VIGO-CLAY-OWEN-MORGAN-
JOHNSON-SHELBY-SULLIVAN-GREENE-MONROE-BROWN-BARTHOLOMEW-DECATUR-
KNOX-DAVIESS-MARTIN-LAWRENCE-JACKSON-JENNINGS-
347 AM EDT WED AUG 11 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...TODAY AND TONIGHT.

...AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 8 PM EDT THURSDAY...

HEAT INDEX VALUES WILL AGAIN REACH THE 105 TO 110 DEGREE RANGE
THIS AFTERNOON...AS AIR TEMPERATURES RISE INTO THE
MID TO UPPER 90S. THE HEAT INDEX WILL ONLY FALL INTO THE MID TO
UPPER 70S DURING THE OVERNIGHT HOURS.

IN ADDITION THERE IS A CHANCE OF THUNDERSTORMS. BUT NONE ARE
EXPECTED TO BE SEVERE...HOWEVER LIGHTNING IS A HAZARD WITH ANY
THUNDERSTORM.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

...AN EXCESSIVE HEAT WARNING REMAINS IN EFFECT FROM 11 AM THIS
MORNING TO 8 PM EDT THURSDAY...

HEAT INDEX VALUES WILL AGAIN REACH THE 105 TO 110 DEGREE RANGE
THURSDAY AFTERNOON...AS AIR TEMPERATURES RISE INTO THE MID TO
UPPER 90S. THE HEAT INDEX WILL ONLY FALL INTO THE MID TO UPPER 70S
DURING THE OVERNIGHT HOURS. HEAT INDEX READINGS IN EXCESS OF 100
DEGREES ARE ALSO POSSIBLE FRIDAY AFTERNOON.

THUNDERSTORMS ARE POSSIBLE AGAIN ON THURSDAY...AND THEN ADDITIONAL
THUNDERSTORMS ARE POSSIBLE THIS WEEKEND. IT IS TOO SOON TO
DETERMINE IF THE STORMS WILL BE SEVERE...HOWEVER LIGHTNING IS A
THREAT FROM ANY THUNDERSTORM.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

&&

MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND
CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL
LOWERCASE)

INZ021-028>031-035>042-048-049-057-120800-
CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY-
BOONE-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-HANCOCK-HENRY-
RUSH-
347 AM EDT WED AUG 11 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...TODAY AND TONIGHT.

...A HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
EDT THURSDAY...

HEAT INDEX VALUES OF 100 TO 104 DEGREES ARE EXPECTED THIS
AFTERNOON...AS AIR TEMPERATURES RISE INTO THE LOW 90S. THE HEAT
INDEX WILL ONLY FALL INTO THE MID 70S DURING THE OVERNIGHT HOURS.

IN ADDITION THERE IS A CHANCE OF THUNDERSTORMS. BUT NONE ARE
EXPECTED TO BE SEVERE...HOWEVER LIGHTNING IS A HAZARD WITH ANY
THUNDERSTORM.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

...A HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM
EDT THURSDAY...

HEAT INDEX VALUES OF 100 TO 104 DEGREES ARE EXPECTED AGAIN THURSDAY
AFTERNOON...AS AIR TEMPERATURES RISE INTO THE LOW 90S. THE HEAT
INDEX WILL ONLY FALL INTO THE MID 70S DURING THE OVERNIGHT HOURS.
HEAT INDEX READINGS NEAR 100 DEGREES ARE ALSO POSSIBLE FRIDAY
AFTERNOON.

THUNDERSTORMS ARE POSSIBLE AGAIN ON THURSDAY...AND THEN ADDITIONAL
THUNDERSTORMS ARE POSSIBLE THIS WEEKEND. IT IS TOO SOON TO
DETERMINE IF THE STORMS WILL BE SEVERE...HOWEVER LIGHTNING IS A
THREAT FROM ANY THUNDERSTORM.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT ANTICIPATED.

&&

MORE INFORMATION...ALONG WITH OTHER WEATHER...HYDROLOGICAL AND
CLIMATE INFORMATION CAN BE FOUND...AT HTTP://WEATHER.GOV/IND (ALL
LOWERCASE)

SMFLECHT

In the hours before

Special weather statement, Aug 11, 6:43 AM EDT, 1 hour 38 minutes before
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Special weather statement, Aug 11, 6:51 AM EDT, 1 hour 30 minutes before
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Special weather statement, Aug 11, 7:23 AM EDT, 58 minutes before
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Local storm report, Aug 11, 7:55 AM EDT, 26 minutes before
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Local storm report, Aug 11, 8:16 AM EDT, 5 minutes before
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Special weather statement, Aug 11, 8:21 AM EDT, 0 minutes before
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The office that day

Everything else NWS Indianapolis, IN issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 11, 3:12 AM EDTExcessive Heat WarningINDBartholomew, Boone, Brown, Carroll, Clay, Clinton and 26 more4 days
Aug 11, 3:12 AM EDTHeat AdvisoryINDBoone, Carroll, Clinton, Delaware, Fountain, Hamilton and 10 more4 days
Aug 11, 7:23 AM EDTSpecial Weather StatementINDDelaware22 min
Aug 11, 8:25 AM EDTSpecial Weather StatementINDTippecanoe50 min
Aug 11, 9:12 AM EDTSpecial Weather StatementINDCarroll, Tippecanoe48 min
Aug 11, 9:27 AM EDTSpecial Weather StatementINDClinton, Howard, Tipton48 min
Aug 11, 10:02 AM EDTSpecial Weather StatementINDHoward, Tipton43 min
Aug 11, 10:37 AM EDTSpecial Weather StatementINDDelaware, Hamilton, Madison38 min
Aug 11, 11:10 AM EDTSpecial Weather StatementINDMadison50 min
Aug 11, 11:32 AM EDTSpecial Weather StatementINDHancock43 min
Aug 11, 11:56 AM EDTSpecial Weather StatementINDHancock49 min
Aug 11, 12:09 PM EDTSevere Thunderstorm WarningINDHancock, Henry, Rush, Shelby51 min
Aug 11, 12:57 PM EDTSpecial Weather StatementINDDecatur, Rush, Shelby63 min
Aug 11, 1:16 PM EDTSpecial Weather StatementINDBartholomew44 min
Aug 11, 5:33 PM EDTSpecial Weather StatementINDHenry42 min
Aug 11, 6:06 PM EDTSpecial Weather StatementINDHancock, Rush39 min

Nearby

Special Weather Statements in Indiana, 2010Every special weather statement in 2010

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.