Alert archive / Illinois / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 89, NWS Paducah, KY
NWS Paducah, KY issued this severe thunderstorm warning at Apr 5, 1999, 6:15 PM CDT for Massac County, Illinois. It was in force for 45 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
- Apr 5, 1999, 6:15 PM CDT (23:15 UTC)
- Expired
- Apr 5, 1999, 7:00 PM CDT
- In force
- 45 min
- Issued by
- NWS Paducah, KY
- Area
- Whole counties
County Massac County, IL
The radar
The Paducah radar (KPAH), 18 km from the middle of the area, began a volume at 23:19 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 |
|---|---|---|---|
| Apr 5, 6:20 PM CDT | Tornado F0 | Metropolis, IL | A weak tornado briefly touched down in the vicinity of U.S. 45 between Joppa and Metropolis. The tornado occurred just outside of a coal terminal. A 9-by-9 foot guard shack on the coal terminal property was destroyed when the roof was blown off followed by the |
| Apr 5, 6:21 PM CDT | Thunderstorm Wind 87 | Round Knob, IL | A thunderstorm downburst with winds estimated near 100 MPH damaged roofs and metal barns. Scattered trees were down, along with some power lines. Most of the homes in the path of the downburst sustained only minor roof damage. The most severely damaged house h |
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 |
|---|---|---|---|
| Apr 5, 4:00 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 11.3 hours before the alert went out and 288 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
- 1263 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 88 m²/s²
- 0-3 km storm-relative helicity
- 230 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
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 Paducah, KY issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 5:31 PM CDT | Severe Thunderstorm Warning | PAH | Fulton, Hickman | 44 min |
| Apr 5, 5:50 PM CDT | Severe Thunderstorm Warning | PAH | Carlisle | 30 min |
| Apr 5, 5:59 PM CDT | Severe Thunderstorm Warning | PAH | Ballard | 31 min |
| Apr 5, 6:03 PM CDT | Severe Thunderstorm Warning | PAH | McCracken | 42 min |
| Apr 5, 6:09 PM CDT | Severe Thunderstorm Warning | PAH | Graves | 36 min |
| Apr 5, 6:28 PM CDT | Severe Thunderstorm Warning | PAH | Livingston | 47 min |
| Apr 5, 6:31 PM CDT | Tornado Warning | PAH | Livingston | 44 min |
| Apr 5, 6:45 PM CDT | Severe Thunderstorm Warning | PAH | Crittenden | 45 min |
| Apr 5, 5:18 PM CDT | Severe Thunderstorm Warning | PAH | Alexander | 27 min |
| Apr 5, 5:26 PM CDT | Severe Thunderstorm Warning | PAH | Jackson, Union | 34 min |
| Apr 5, 4:17 PM CDT | Severe Thunderstorm Warning | PAH | Bollinger, Wayne | 43 min |
| Apr 5, 4:46 PM CDT | Severe Thunderstorm Warning | PAH | Perry | 29 min |
| Apr 5, 4:49 PM CDT | Severe Thunderstorm Warning | PAH | Scott, Stoddard | 41 min |
| Apr 5, 5:00 PM CDT | Severe Thunderstorm Warning | PAH | New Madrid | 30 min |
| Apr 5, 5:15 PM CDT | Severe Thunderstorm Warning | PAH | Cape Girardeau | 30 min |
| Apr 5, 5:27 PM CDT | Severe Thunderstorm Warning | PAH | Mississippi | 33 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 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.