Alert archive / Illinois / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 252, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jul 14, 2023, 4:41 PM CDT for Brown County, Illinois. It was in force for 19 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 14, 2023, 4:41 PM CDT (21:41 UTC)
- Expired
- Jul 14, 2023, 5:00 PM CDT
- In force
- 19 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Brown County, IL
The radar
The Lincoln radar (KILX), 109 km from the middle of the area, began a volume at 21:42 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
Lincoln, IL (KILX), launched 12:00Z, 9.7 hours before the alert went out and 171 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
- 354 J/kg
- Mixed-layer CIN
- -123 J/kg
- Mixed-layer LCL
- 1297 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 128 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
As transmitted.
439
WUUS53 KLSX 142141
SVRLSX
ILC009-142200-
/O.NEW.KLSX.SV.W.0252.230714T2141Z-230714T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
441 PM CDT Fri Jul 14 2023
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Southeastern Brown County in west central Illinois...
* Until 500 PM CDT.
* At 441 PM CDT, a severe thunderstorm was located near Meredosia,
moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will remain over mainly rural areas of
southeastern Brown County, including the following locations...
Versailles, Coopertown, Ripley, and La Grange.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4003 9061 4001 9062 4000 9060 3998 9060
3998 9054 3999 9052 3997 9051 3995 9053
3992 9054 3988 9058 3984 9058 3984 9065
3996 9074 4003 9063 4002 9063
TIME...MOT...LOC 2141Z 242DEG 19KT 3993 9060
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MRB1 follow-up statement
633
WWUS53 KLSX 142157
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
457 PM CDT Fri Jul 14 2023
ILC009-142207-
/O.EXP.KLSX.SV.W.0252.000000T0000Z-230714T2200Z/
Brown IL-
457 PM CDT Fri Jul 14 2023
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BROWN COUNTY WILL
EXPIRE AT 500 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 4003 9061 4001 9062 4000 9060 3998 9060
3998 9054 3999 9052 3997 9051 3995 9053
3992 9054 3988 9058 3984 9058 3984 9065
3996 9074 4003 9063 4002 9063
TIME...MOT...LOC 2157Z 242DEG 19KT 3997 9050
$$
MRBThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 1:13 PM CDT | Severe Thunderstorm Warning | LSX | Madison, Saint Clair | 14 min |
| Jul 14, 6:34 PM CDT | Severe Thunderstorm Warning | LSX | Madison | 41 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2023Every severe thunderstorm warning in 2023
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.