Alert archive / Indiana / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 86, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Jul 6, 1999, 4:17 PM EST for Johnson County, Marion County, Indiana. It was in force for 33 min. 1 report 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 6, 1999, 4:17 PM EST (21:17 UTC)
- Expired
- Jul 6, 1999, 4:50 PM EST
- In force
- 33 min
- Issued by
- NWS Indianapolis, IN
- Area
- Whole counties
Counties Johnson County, IN, Marion County, IN
The radar
The Indianapolis radar (KIND), 16 km from the middle of the area, began a volume at 21:18 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 6, 4:30 PM EST | Thunderstorm Wind 50 | Greenwood, IN |
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, 9.3 hours before the alert went out and 200 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
- 735 J/kg
- Mixed-layer CIN
- -71 J/kg
- Mixed-layer LCL
- 1127 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -27 m²/s²
- 0-3 km storm-relative helicity
- 27 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
142 WUUS1 KIND 062118 RRA SVRIND INC081-097-062150- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE INDIANAPOLIS IN 417 PM EST TUE JUL 6 1999 THE NATIONAL WEATHER SERVICE IN INDIANAPOLIS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... JOHNSON COUNTY IN CENTRAL INDIANA EXTREME SOUTHERN MARION COUNTY IN CENTRAL INDIANA * UNTIL 450 PM EST * AT 415 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NEAR INDIANAPOLIS INTERNATIONAL AIRPORT... MOVING SOUTHEAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GLENNS VALLEY AT 420 PM EST GREENWOOD AT 425 PM EST FRANKLIN AT 440 PM EST DAMAGING WINDS AND HEAVY RAIN ARE LIKELY. GO INSIDE A STURDY BUILDING AND STAY AWAY FROM WINDOWS
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.
In the hours before
Local storm report, Jul 6, 4:07 PM EST, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
407 PM EST TUE JUL 06 1999
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0300 PM 2 N IND EAGLE CREEK ARPT IN WIND DAMAGE
07/06/99 MARION SEVERAL TREES DOWNED.
REPORTED BY SHERIFF.
0325 PM SPEEDWAY IN .88 INCH HAIL
07/06/99 MARION REPORTED BY TRAINED
SPOTTER.
0404 PM INDIANAPOLIS INTL ARPT IN 69 MPH TSTM GUST
07/06/99 MARION WIND GUST RECORDED BY
INDIANAPOLIS POWER AND
LIGHT EQUIPMENT JUST
SOUTHWEST OF AIRPORT.Local storm report, Jul 6, 4:07 PM EST, 10 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE INDIANAPOLIS IN
407 PM EST TUE JUL 06 1999
TIME(EST) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0300 PM 2 N IND EAGLE CREEK ARPT IN WIND DAMAGE
07/06/99 MARION SEVERAL TREES DOWNED.
REPORTED BY SHERIFF.
0325 PM SPEEDWAY IN .88 INCH HAIL
07/06/99 MARION REPORTED BY TRAINED
SPOTTER.
0404 PM INDIANAPOLIS INTL ARPT IN 69 MPH TSTM GUST
07/06/99 MARION WIND GUST RECORDED BY
INDIANAPOLIS POWER AND
LIGHT EQUIPMENT JUST
SOUTHWEST OF AIRPORT.The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 3:23 PM EST | Severe Thunderstorm Warning | IND | Marion | 52 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.