Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 160, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Aug 26, 2021, 5:57 PM CDT for Bond County, Fayette County, Illinois. It was in force for 48 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 26, 2021, 5:57 PM CDT (22:57 UTC)
- Expired
- Aug 26, 2021, 6:45 PM CDT
- In force
- 48 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Bond County, IL, Fayette County, IL
The radar
The St Louis radar (KLSX), 119 km from the middle of the area, began a volume at 22:58 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 |
|---|---|---|---|
| Aug 26, 6:00 PM CDT | TSTM WND DMG | 1 Ssw Greenville, IL | MULTIPLE POWER POLES LEANED OVER AND A FEW THAT WERE SNAPPED. A FEW TREES AND SEVERAL LARGE LIMBS DOWNED. DAMAGE MOSTLY CONFINED TO SOUTH SIDE OF GREENVILLE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 11.0 hours before the alert went out and 151 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
- 1067 J/kg
- Mixed-layer CIN
- -78 J/kg
- Mixed-layer LCL
- 954 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 118 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 4.6
The text
As transmitted.
199
WUUS53 KLSX 262257
SVRLSX
ILC005-051-262345-
/O.NEW.KLSX.SV.W.0160.210826T2257Z-210826T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
557 PM CDT Thu Aug 26 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Bond County in south central Illinois...
Southwestern Fayette County in south central Illinois...
* Until 645 PM CDT.
* At 556 PM CDT, a severe thunderstorm was located over Greenville,
moving southeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Mulberry Grove around 600 PM CDT.
Other locations in the path of this severe thunderstorm include
Beaver Creek.
This includes Interstate 70 in Illinois between exits 41 and 52.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3875 8947 3903 8955 3903 8925 3904 8925
3904 8918 3879 8916
TIME...MOT...LOC 2256Z 334DEG 7KT 3890 8936
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
192 follow-up statements
166
WWUS53 KLSX 262333
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
633 PM CDT Thu Aug 26 2021
ILC005-051-262345-
/O.CON.KLSX.SV.W.0160.000000T0000Z-210826T2345Z/
Bond IL-Fayette IL-
633 PM CDT Thu Aug 26 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM CDT
FOR BOND AND SOUTHWESTERN FAYETTE COUNTIES...
At 633 PM CDT, a severe thunderstorm was located over Greenville,
moving southeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Law enforcement.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Mulberry Grove and Beaver Creek.
This includes Interstate 70 in Illinois between exits 41 and 52.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3875 8947 3903 8955 3903 8925 3904 8925
3904 8918 3879 8916
TIME...MOT...LOC 2333Z 337DEG 8KT 3891 8938
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...OBSERVED
MAX WIND GUST...60 MPH
$$
19642
WWUS53 KLSX 262340
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
640 PM CDT Thu Aug 26 2021
ILC005-051-262350-
/O.EXP.KLSX.SV.W.0160.000000T0000Z-210826T2345Z/
Bond IL-Fayette IL-
640 PM CDT Thu Aug 26 2021
...THE SEVERE THUNDERSTORM WARNING FOR BOND AND SOUTHWESTERN FAYETTE
COUNTIES WILL EXPIRE AT 645 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 3875 8947 3903 8955 3903 8925 3904 8925
3904 8918 3879 8916
TIME...MOT...LOC 2340Z 334DEG 7KT 3894 8940
$$
19The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 2:04 PM CDT | Severe Thunderstorm Warning | LSX | Montgomery | 41 min |
| Aug 26, 2:45 PM CDT | Flash Flood Warning | LSX | Montgomery | 4 hr |
| Aug 26, 4:38 PM CDT | Severe Thunderstorm Warning | LSX | Greene | 52 min |
| Aug 26, 5:28 PM CDT | Severe Thunderstorm Warning | LSX | Adams | 25 min |
| Aug 26, 6:54 PM CDT | Areal Flood Advisory | LSX | Bond | 3 hr |
Nearby
Severe Thunderstorm Warnings in Illinois, 2021Every severe thunderstorm warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.