Severe Thunderstorm Warning 90, NWS Indianapolis, IN

Issued

Aug 23, 2002, 6:43 PM EST (23:43 UTC)

Expired

Aug 23, 2002, 7:30 PM EST

In force

47 min

Issued by

NWS Indianapolis, IN

Area

Counties, with a storm outline in the text

Counties Decatur County, IN, Rush County, IN

The Indianapolis radar (KIND), 73 km from the middle of the area, began a volume at 23:46 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.

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

NWS Indianapolis, IN wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 23, 2:20 PM EST, 4 hours 23 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
220 PM EST FRI AUG 23 2002

MAIN PROBLEM THIS FORECAST IS THE COVERAGE AND DURATION OF RAIN.
RADAR SHOWS SCT CONVECTION IN SC AND SE SECTIONS OF STATE AHEAD OF
SE BOUND MCS OVR SRN IL. ALSO SCT STORMS WITH VORT LIKE FEATURE OVER
NRN IN MOVG E. FLOOD THREAT APPEARS OVER AS MCS DEBRIS HAVE KEPT
WATCH AREA STABLE TODAY WITH LITTLE RAIN AND NO SIGNIF RAIN EXPECTED
IN THIS AREA THIS EVE.

MODELS DIFFER SOME ON WHERE HEAVIEST PCPN TO FALL BUT ALL SUGGEST
CDFNT TO SLIP THRU CWA DURING NGT. GIVEN ONGOING EVENT...ETA APPEARS
BEST WITH HEAVIER AMOUNTS SRN IL SLIPPING SE ACRS SRN INDIANA AND
INTO KY OVRNGT. SECONDARY AREA BY SOME MODELS FROM EC INDIANA INTO
OHIO MAY TAKE PLACE IN OHIO BUT NOT LIKELY HERE. QUESTION AS TO
WHETHER SHOWERS MAY LINGER INTO OVERNIGHT OR SAT MORN BUT GIVEN
TRENDS THUS FAR EXPECT MOST WILL CARRY OUT THIS AFTN AND EVE.

GRADUAL DRYING TAKES PLACE THRU SAT THEN SEASONABLE WX THRU FCST
PERIOD.

GUIDANCE POPS FROM AVN APPEARED A BIT HI TNGT GIVEN CURRENT AND
EXPECTED COVERAGE SO LEANED TO ETA CHC VALUES. GIVEN SLOW FALL OF
DEWPOINTS LOWS NEAR 70 OVRNGT APPEARED REASONABLE. AND WITH THAT AS
STARTING POINT LOW AND MID 80S TOMORROW ON TRACK. AGAIN SEASONAL
TEMPS IN GUIDANCE REST OF FCST LOOKS GOOD.

.IND...NONE
DRT

Severe Thunderstorm Warnings in Indiana, 2002Every severe thunderstorm warning in 2002

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