Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 46, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at May 16, 2021, 10:58 PM CDT for Bond County, Fayette County, Montgomery County, Illinois. It was in force for 47 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
- May 16, 2021, 10:58 PM CDT (03:58 UTC)
- Expired
- May 16, 2021, 11:45 PM CDT
- In force
- 47 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Bond County, IL, Fayette County, IL, Montgomery County, IL
The radar
The St Louis radar (KLSX), 114 km from the middle of the area, began a volume at 04:01 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.
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 4.0 hours before the alert went out and 150 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
- 108 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1515 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
362
WUUS53 KLSX 170358
SVRLSX
ILC005-051-135-170445-
/O.NEW.KLSX.SV.W.0046.210517T0358Z-210517T0445Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
1058 PM CDT Sun May 16 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northern Bond County in south central Illinois...
Northwestern Fayette County in south central Illinois...
Southern Montgomery County in south central Illinois...
* Until 1145 PM CDT.
* At 1057 PM CDT, severe thunderstorms were located along a line
extending from Schram City to near Pocahontas, moving east at 30
mph.
HAZARD...60 mph wind gusts and nickel size hail.
SOURCE...Radar indicated.
IMPACT...Expect damage to roofs, siding, and trees.
* Severe thunderstorms will be near...
Coffeen around 1105 PM CDT.
Woburn around 1115 PM CDT.
Other locations in the path of these severe thunderstorms include
Mulberry Grove and Van Burensburg.
This includes Interstate 70 in Illinois between exits 45 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 these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 3887 8914 3886 8960 3887 8960 3888 8962
3914 8960 3916 8913
TIME...MOT...LOC 0357Z 253DEG 27KT 3914 8946 3888 8950
HAIL...0.88IN
WIND...60MPH
$$
192 follow-up statements
403 WWUS53 KLSX 170417 SVSLSX Severe Weather Statement National Weather Service St Louis MO 1117 PM CDT Sun May 16 2021 ILC005-051-135-170445- /O.CON.KLSX.SV.W.0046.000000T0000Z-210517T0445Z/ Bond IL-Fayette IL-Montgomery IL- 1117 PM CDT Sun May 16 2021 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT FOR NORTHEASTERN BOND...NORTHWESTERN FAYETTE AND SOUTHEASTERN MONTGOMERY COUNTIES... At 1117 PM CDT, severe thunderstorms were located along a line extending from 7 miles west of Ramsey to Mulberry Grove, moving east at 40 mph. HAZARD...60 mph wind gusts and nickel size hail. SOURCE...Radar indicated. IMPACT...Expect damage to roofs, siding, and trees. These severe thunderstorms will remain over mainly rural areas of northeastern Bond, northwestern Fayette and southeastern Montgomery Counties, including the following locations... Bayle City, Fillmore, Bingham, Chapman, Shafter and Hagerstown. This includes Interstate 70 in Illinois near exit 52. PRECAUTIONARY/PREPAREDNESS ACTIONS... For your protection move to an interior room on the lowest floor of a building. Torrential rainfall is occurring with these storms, and may lead to flash flooding. Do not drive your vehicle through flooded roadways. && LAT...LON 3891 8914 3892 8945 3915 8938 3916 8913 TIME...MOT...LOC 0417Z 257DEG 34KT 3917 8924 3891 8928 HAIL...0.88IN WIND...60MPH $$ 19
489
WWUS53 KLSX 170440
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
1140 PM CDT Sun May 16 2021
ILC005-051-135-170450-
/O.EXP.KLSX.SV.W.0046.000000T0000Z-210517T0445Z/
Bond IL-Fayette IL-Montgomery IL-
1140 PM CDT Sun May 16 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BOND...
NORTHWESTERN FAYETTE AND SOUTHEASTERN MONTGOMERY COUNTIES WILL EXPIRE
AT 1145 PM CDT...
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire. However gusty winds are still possible with
these thunderstorms.
LAT...LON 3891 8914 3892 8945 3915 8938 3916 8913
TIME...MOT...LOC 0440Z 253DEG 27KT 3917 8924 3891 8928
$$
19The office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 16, 9:36 PM CDT | Areal Flood Advisory | LSX | Greene, Jersey, Macoupin | 3 hr |
| May 16, 10:36 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Montgomery | 39 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.