Alert archive / Illinois / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 449, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Sep 11, 2000, 9:10 PM CDT for Adams County, Brown County, Illinois. It was in force for 65 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
- Sep 11, 2000, 9:10 PM CDT (02:10 UTC)
- Expired
- Sep 11, 2000, 10:15 PM CDT
- In force
- 65 min
- Issued by
- NWS St. Louis, MO
- Area
- Whole counties
Counties Adams County, IL, Brown County, IL
The radar
The Lincoln radar (KILX), 140 km from the middle of the area, began a volume at 02:01 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 |
|---|---|---|---|
| Sep 11, 9:49 PM CDT | Thunderstorm Wind 56 E | Mt Sterling, IL | |
| Sep 11, 9:57 PM CDT | Thunderstorm Wind 56 E | Timewell, IL |
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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 11, 8:00 PM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 2.2 hours before the alert went out and 187 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
- 1371 J/kg
- Mixed-layer CIN
- -112 J/kg
- Mixed-layer LCL
- 2176 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 156 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 11, 9:32 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 58 min |
| Sep 11, 10:09 PM CDT | Severe Thunderstorm Warning | LSX | Calhoun | 66 min |
| Sep 11, 10:32 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 58 min |
| Sep 11, 10:51 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 39 min |
| Sep 11, 10:53 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin | 52 min |
| Sep 11, 11:16 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 59 min |
| Sep 12, 12:01 AM CDT | Severe Thunderstorm Warning | LSX | Monroe, Saint Clair | 59 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2000Every severe thunderstorm warning in 2000
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.