Alert archive / Indiana / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 298, NWS Indianapolis, IN

August 10, 2006Knox County, Indiana

NWS Indianapolis, IN issued this severe thunderstorm warning at Aug 10, 2006, 2:57 PM CDT for Knox County, Indiana. It was in force for 33 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: Aug 10, 2006, 2:57 PM CDT (19:57 UTC)
Expired: Aug 10, 2006, 3:30 PM CDT
In force: 33 min
Issued by: NWS Indianapolis, IN
Area: Counties, with a storm outline in the text

County Knox County, IN

The radar

The Evansville,IN radar (KVWX), 55 km from the middle of the area, began a volume at 19:56 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 10, 12:44 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Lincoln, IL (KILX), launched 12:00Z, 8.0 hours before the alert went out and 192 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: 1749 J/kg
Mixed-layer CIN: -179 J/kg
Mixed-layer LCL: 1509 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 82 m²/s²
0-3 km storm-relative helicity: 95 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 Indianapolis, IN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 10, 2:00 PM CDT, 57 minutes earlier.

Area forecast discussion, Aug 10, 2:00 PM CDT, 57 minutes before

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Hazardous weather outlook, Aug 10, 7:48 AM CDT, 7 hours 9 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
848 AM EDT THU AUG 10 2006

INZ021-028>031-035>049-051>057-060>065-067>072-111300-
CARROLL-WARREN-TIPPECANOE-CLINTON-HOWARD-FOUNTAIN-MONTGOMERY-
BOONE-TIPTON-HAMILTON-MADISON-DELAWARE-RANDOLPH-VERMILLION-PARKE-
PUTNAM-HENDRICKS-MARION-HANCOCK-HENRY-VIGO-CLAY-OWEN-MORGAN-
JOHNSON-SHELBY-RUSH-SULLIVAN-GREENE-MONROE-BROWN-BARTHOLOMEW-
DECATUR-KNOX-DAVIESS-MARTIN-LAWRENCE-JACKSON-JENNINGS-
748 AM CDT THU AUG 10 2006 /848 AM EDT THU AUG 10 2006/

THIS HAZARDOUS WEATHER OUTLOOK IS FOR CENTRAL INDIANA.

.DAY ONE...TODAY AND TONIGHT.

THUNDERSTORMS ARE LIKELY TODAY AND TONIGHT. A MODERATE RISK OF
SEVERE WEATHER IS IN PLACE OVER CENTRAL INDIANA. THE MAIN THREAT
WILL BE DAMAGING WINDS...HEAVY DOWNPOURS...AND DANGEROUS
LIGHTNING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THERE IS A CHANCE OF THUNDERSTORMS ON FRIDAY AND THEN AGAIN ON
MONDAY AND TUESDAY AS A COLD FRONT WILL MOVE ACROSS THE STATE.
SEVERE WEATHER IS NOT EXPECTED AT THIS TIME...HOWEVER LIGHTNING IS A
THREAT WITH ANY THUNDERSTORM.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED TODAY.

&&

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

CP

In the hours before

Local storm report, Aug 10, 1:23 PM CDT, 1 hour 34 minutes before

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Local storm report, Aug 10, 2:15 PM CDT, 42 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 10, 8:21 AM CDT	Severe Thunderstorm Warning	IND	Boone, Montgomery	39 min
Aug 10, 8:56 AM CDT	Severe Thunderstorm Warning	IND	Boone, Hendricks	49 min
Aug 10, 9:30 AM CDT	Severe Thunderstorm Warning	IND	Marion	22 min
Aug 10, 1:00 PM CDT	Severe Thunderstorm Warning	IND	Decatur	30 min

Nearby

Severe Thunderstorm Warnings in Indiana, 2006 Every severe thunderstorm warning in 2006

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.