Alert archive / Indiana / Severe Thunderstorm Warnings in 2002
Severe Thunderstorm Warning 99, NWS Indianapolis, IN
NWS Indianapolis, IN issued this severe thunderstorm warning at Sep 20, 2002, 3:03 PM EST for Decatur County, Jennings County, Indiana. It was in force for 42 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
- Sep 20, 2002, 3:03 PM EST (20:03 UTC)
- Expired
- Sep 20, 2002, 3:45 PM EST
- In force
- 42 min
- Issued by
- NWS Indianapolis, IN
- Area
- Counties, with a storm outline in the text
Counties Decatur County, IN, Jennings County, IN
The radar
The Indianapolis radar (KIND), 87 km from the middle of the area, began a volume at 20:05 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 |
|---|---|---|---|
| Sep 20, 11:30 AM EST | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 12:00Z, 8.1 hours before the alert went out and 155 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
- 339 J/kg
- Mixed-layer CIN
- -46 J/kg
- Mixed-layer LCL
- 850 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 179 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 1.5
The office that day
Everything else NWS Indianapolis, IN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 7:35 PM EST | Severe Thunderstorm Warning | IND | Clay, Sullivan, Vigo | 25 min |
| Sep 20, 11:28 AM EST | Tornado Warning | IND | Knox | 32 min |
| Sep 20, 11:39 AM EST | Tornado Warning | IND | Daviess | 51 min |
| Sep 20, 11:50 AM EST | Tornado Warning | IND | Daviess, Greene, Knox | 25 min |
| Sep 20, 12:14 PM EST | Tornado Warning | IND | Greene, Owen | 46 min |
| Sep 20, 12:15 PM EST | Tornado Warning | IND | Daviess, Greene | 30 min |
| Sep 20, 12:39 PM EST | Tornado Warning | IND | Greene, Monroe, Owen | 36 min |
| Sep 20, 12:42 PM EST | Tornado Warning | IND | Morgan, Owen | 33 min |
| Sep 20, 1:04 PM EST | Tornado Warning | IND | Morgan | 41 min |
| Sep 20, 1:08 PM EST | Severe Thunderstorm Warning | IND | Hendricks | 37 min |
| Sep 20, 1:22 PM EST | Tornado Warning | IND | Johnson, Marion | 38 min |
| Sep 20, 1:46 PM EST | Tornado Warning | IND | Hancock | 44 min |
| Sep 20, 1:53 PM EST | Severe Thunderstorm Warning | IND | Jackson, Lawrence | 37 min |
| Sep 20, 1:58 PM EST | Tornado Warning | IND | Marion | 17 min |
| Sep 20, 2:06 PM EST | Tornado Warning | IND | Madison | 54 min |
| Sep 20, 2:07 PM EST | Severe Thunderstorm Warning | IND | Hamilton | 23 min |
| Sep 20, 2:09 PM EST | Severe Thunderstorm Warning | IND | Bartholomew, Brown | 66 min |
| Sep 20, 2:44 PM EST | Tornado Warning | IND | Delaware | 46 min |
| Sep 20, 3:02 PM EST | Tornado Warning | IND | Rush | 28 min |
| Sep 20, 3:19 PM EST | Severe Thunderstorm Warning | IND | Randolph | 41 min |
Nearby
Severe Thunderstorm Warnings in Indiana, 2002Every severe thunderstorm warning in 2002
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.