Alert archive / Illinois / Severe Thunderstorm Warnings in 1997
Severe Thunderstorm Warning 108, NWS Paducah, KY
NWS Paducah, KY issued this severe thunderstorm warning at May 30, 1997, 6:03 PM CDT for Johnson County, Union County, Illinois. 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
- May 30, 1997, 6:03 PM CDT (23:03 UTC)
- Expired
- May 30, 1997, 6:45 PM CDT
- In force
- 42 min
- Issued by
- NWS Paducah, KY
- Area
- Whole counties
Counties Johnson County, IL, Union County, IL
The radar
The Paducah radar (KPAH), 51 km from the middle of the area, began a volume at 23:03 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 nearest sounding before it
Little Rock, AR (KLZK), launched 12:00Z, 11.1 hours before the alert went out and 304 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
- 1303 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 504 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 115 m²/s²
- 0-3 km storm-relative helicity
- 86 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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.
NWS Paducah, KY wrote its last area forecast discussion before this severe thunderstorm warning went out at May 30, 1:16 PM CDT, 4 hours 47 minutes earlier.
Area forecast discussion, May 30, 1:16 PM CDT, 4 hours 47 minutes before
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Special weather statement, May 30, 12:09 PM CDT, 5 hours 54 minutes before
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</html>Special weather statement, May 30, 12:17 PM CDT, 5 hours 46 minutes before
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</html>Special weather statement, May 30, 12:26 PM CDT, 5 hours 37 minutes before
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</html>Nearby
Severe Thunderstorm Warnings in Illinois, 1997Every severe thunderstorm warning in 1997
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.