Alert archive / Indiana / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 87, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 9, 1999, 5:44 PM EST for Johnson County, Shelby County, Indiana. It was in force for 36 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jul 9, 1999, 5:44 PM EST (22:44 UTC)
- Expired
- Jul 9, 1999, 6:20 PM EST
- In force
- 36 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
Counties Johnson County, IN, Shelby County, IN
The radar
The Indianapolis radar (KIND), 36 km from the middle of the area, began a volume at 22:48 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 9, 6:10 PM EST | Thunderstorm Wind 50 | Franklin, IN | Law enforcement reported trees down. |
| Jul 9, 6:15 PM EST | Thunderstorm Wind 50 | Shelbyville, IN | Law enforcement reported a line of thunderstorms produced downed trees. |
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.
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.7 hours before the alert went out and 184 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.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1992 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 257 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KIND 092245 RRA SVRIND INC081-145-092320- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE INDIANAPOLIS IN 544 PM EST FRI JUL 9 1999 THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME EASTERN JOHNSON COUNTY IN CENTRAL INDIANA SHELBY COUNTY IN CENTRAL INDIANA * UNTIL 620 PM EST * AT 542 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST EAST OF FRANKLIN OR 20 MILES SOUTH OF INDIANAPOLIS... MOVING EAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BENGAL AT 555 PM EST SMITHLAND AT 600 PM EST SHELBYVILLE AT 610 PM EST DAMAGING WINDS AND LARGE HAIL ARE HLIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS!
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 6:05 PM EST | Severe Thunderstorm Warning | IND | Greene, Owen | 30 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 1999Every severe thunderstorm warning in 1999
Sources
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.