Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 64, NWS St. Louis, MO
NWS St. Louis, MO issued this severe thunderstorm warning at Jun 19, 2021, 3:21 PM CDT for Pike County, Missouri; Calhoun County, Greene County, Pike County, Illinois. It was in force for 25 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
- Jun 19, 2021, 3:21 PM CDT (20:21 UTC)
- Expired
- Jun 19, 2021, 3:46 PM CDT
- In force
- 25 min
- Issued by
- NWS St. Louis, MO
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Calhoun County, IL, Greene County, IL, Pike County, IL, Pike County, MO
The radar
The St Louis radar (KLSX), 99 km from the middle of the area, began a volume at 20:21 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 19, 2:43 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 12:00Z, 8.4 hours before the alert went out and 186 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
- 1960 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 142 m²/s²
- 0-3 km storm-relative helicity
- 203 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
171
WUUS53 KLSX 192021
SVRLSX
ILC013-061-149-MOC163-192100-
/O.NEW.KLSX.SV.W.0064.210619T2021Z-210619T2100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service St Louis MO
321 PM CDT Sat Jun 19 2021
The National Weather Service in St Louis has issued a
* Severe Thunderstorm Warning for...
Northwestern Calhoun County in southwestern Illinois...
Northwestern Greene County in southwestern Illinois...
Southeastern Pike County in west central Illinois...
Northeastern Pike County in northeastern Missouri...
* Until 400 PM CDT.
* At 321 PM CDT, a severe thunderstorm was located over Pleasant
Hill, moving east at 50 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
northwestern Calhoun and northwestern Greene Counties in
southwestern Illinois, southeastern Pike County in west central
Illinois and northeastern Pike Counties in northeastern Missouri,
including the following locations... Nebo, Detroit, Martinsburg,
Independence, Florence, Time, Patterson, New Hartford, Summer Hill
and Pearl.
This includes Interstate 72 near exit 35.
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 3973 9063 3972 9064 3969 9065 3964 9061
3962 9061 3954 9057 3952 9058 3952 9050
3943 9045 3927 9095 3953 9112 3974 9063
TIME...MOT...LOC 2021Z 259DEG 50KT 3947 9086
HAIL...1.00IN
WIND...60MPH
$$
GKS2 follow-up statements
398
WWUS53 KLSX 192036
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
336 PM CDT Sat Jun 19 2021
MOC163-192045-
/O.CAN.KLSX.SV.W.0064.000000T0000Z-210619T2100Z/
Pike MO-
336 PM CDT Sat Jun 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN PIKE COUNTY IN
NORTHEASTERN MISSOURI IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
southwestern and west central Illinois.
LAT...LON 3964 9061 3962 9061 3954 9057 3952 9058
3952 9050 3943 9045 3933 9081 3954 9094
3967 9063
TIME...MOT...LOC 2035Z 255DEG 43KT 3952 9070
$$
ILC013-061-149-192100-
/O.CON.KLSX.SV.W.0064.000000T0000Z-210619T2100Z/
Calhoun IL-Greene IL-Pike IL-
336 PM CDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM CDT
FOR NORTH CENTRAL CALHOUN...NORTHWESTERN GREENE COUNTIES IN
SOUTHWESTERN ILLINOIS AND SOUTHEASTERN PIKE COUNTIES IN WEST CENTRAL
ILLINOIS...
At 335 PM CDT, a severe thunderstorm was located 8 miles southeast of
Pittsfield, moving east at 50 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.
Locations impacted include...
Pittsfield, Pleasant Hill, Belleview, Independence, Bedford,
Patterson, Montezuma, Martinsburg, Nebo, Milton, Hillview, Pearl,
Detroit, Florence, Time, Summer Hill and Beecreek.
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 3964 9061 3962 9061 3954 9057 3952 9058
3952 9050 3943 9045 3933 9081 3954 9094
3967 9063
TIME...MOT...LOC 2035Z 255DEG 43KT 3952 9070
HAIL...1.00IN
WIND...60MPH
$$
GKS741
WWUS53 KLSX 192046
SVSLSX
Severe Weather Statement
National Weather Service St Louis MO
346 PM CDT Sat Jun 19 2021
ILC013-061-149-192055-
/O.CAN.KLSX.SV.W.0064.000000T0000Z-210619T2100Z/
Calhoun IL-Greene IL-Pike IL-
346 PM CDT Sat Jun 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL CALHOUN...
NORTHWESTERN GREENE COUNTIES IN SOUTHWESTERN ILLINOIS AND
SOUTHEASTERN PIKE COUNTIES IN WEST CENTRAL ILLINOIS IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail, gusty
winds and heavy rain are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1000 PM CDT for
southwestern and west central Illinois.
LAT...LON 3964 9061 3962 9061 3954 9057 3952 9058
3952 9050 3943 9045 3933 9081 3954 9094
3967 9063
TIME...MOT...LOC 2044Z 259DEG 50KT 3955 9051
$$
GKSThe office that day
Everything else NWS St. Louis, MO issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 2:15 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 31 min |
| Jun 19, 2:44 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 32 min |
| Jun 19, 2:52 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 38 min |
| Jun 19, 2:55 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln | 50 min |
| Jun 19, 3:31 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles | 44 min |
| Jun 19, 4:16 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Saint Charles, Saint Louis | 44 min |
| Jun 19, 4:35 PM CDT | Flash Flood Warning | LSX | Saint Charles | 6 hr |
| Jun 19, 4:43 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 47 min |
| Jun 19, 5:09 PM CDT | Severe Thunderstorm Warning | LSX | Saint Charles, Saint Louis | 51 min |
| Jun 19, 5:17 PM CDT | Severe Thunderstorm Warning | LSX | Saint Louis, City of Saint Louis | 43 min |
| Jun 19, 5:25 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 35 min |
| Jun 19, 5:31 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Ralls | 59 min |
| Jun 19, 5:46 PM CDT | Severe Thunderstorm Warning | LSX | Pike, Ralls | 59 min |
| Jun 19, 5:58 PM CDT | Flash Flood Warning | LSX | Marion, Pike, Ralls | 6 hr |
| Jun 19, 6:00 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis | 45 min |
| Jun 19, 6:46 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Pike | 44 min |
| Jun 19, 6:54 PM CDT | Severe Thunderstorm Warning | LSX | Monroe, Ralls | 51 min |
| Jun 19, 5:44 AM CDT | Severe Thunderstorm Warning | LSX | Marion | 18 min |
| Jun 19, 10:45 AM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Montgomery | 45 min |
| Jun 19, 4:10 PM CDT | Flash Flood Warning | LSX | Calhoun | 6 hr |
Nearby
Severe Thunderstorm Warnings in Illinois, 2021Severe Thunderstorm Warnings in Missouri, 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.