Alert archive / Illinois / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 9, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 18, 2021, 11:36 PM CDT for Henderson County, Warren County, Illinois. It was in force for 40 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 18, 2021, 11:36 PM CDT (04:36 UTC)
- Expired
- Jun 19, 2021, 12:16 AM CDT
- In force
- 40 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.75 in
- Wind
- 60.0 mph
Counties Henderson County, IL, Warren County, IL
The radar
The Quad Cities radar (KDVN), 92 km from the middle of the area, began a volume at 04:38 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 18, 10:08 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 4.6 hours before the alert went out and 95 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
- 4 J/kg
- Mixed-layer CIN
- -335 J/kg
- Mixed-layer LCL
- 2572 m above ground
- 0-6 km bulk shear
- 55 kt
- 0-1 km storm-relative helicity
- -15 m²/s²
- 0-3 km storm-relative helicity
- 55 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
473
WUUS53 KDVN 190436
SVRDVN
ILC071-187-190530-
/O.NEW.KDVN.SV.W.0009.210619T0436Z-210619T0530Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
1136 PM CDT Fri Jun 18 2021
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Henderson County in west central Illinois...
Warren County in west central Illinois...
* Until 1230 AM CDT.
* At 1135 PM CDT, a severe thunderstorm was located over Biggsville,
or near Oquawka, moving east at 30 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect
wind damage to roofs, siding, and trees.
* This severe thunderstorm will be near...
Kirkwood around 1150 PM CDT.
Other locations in the path of this severe thunderstorm include
Monmouth and Roseville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
&&
LAT...LON 4063 9065 4071 9111 4073 9111 4078 9109
4081 9110 4085 9106 4088 9104 4092 9096
4096 9095 4102 9094 4102 9044 4063 9045
TIME...MOT...LOC 0435Z 282DEG 27KT 4087 9088
HAIL...1.75IN
WIND...60MPH
$$
Ervin5 follow-up statements
174
WWUS53 KDVN 190445
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
1145 PM CDT Fri Jun 18 2021
ILC071-187-190530-
/O.CON.KDVN.SV.W.0009.000000T0000Z-210619T0530Z/
Henderson IL-Warren IL-
1145 PM CDT Fri Jun 18 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR HENDERSON AND WARREN COUNTIES...
At 1145 PM CDT, a severe thunderstorm was located over Kirkwood, or 8
miles southwest of Monmouth, moving east at 30 mph.
HAZARD...Golf ball size hail and 60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...People and animals outdoors will be injured. Expect hail
damage to roofs, siding, windows, and vehicles. Expect wind
damage to roofs, siding, and trees.
Locations impacted include...
Monmouth and Roseville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4063 9065 4071 9111 4073 9111 4078 9109
4081 9110 4085 9106 4088 9104 4092 9096
4096 9095 4102 9094 4102 9044 4063 9045
TIME...MOT...LOC 0445Z 282DEG 27KT 4085 9078
HAIL...1.75IN
WIND...60MPH
$$
Ervin712
WWUS53 KDVN 190452
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
1152 PM CDT Fri Jun 18 2021
ILC071-187-190530-
/O.CON.KDVN.SV.W.0009.000000T0000Z-210619T0530Z/
Henderson IL-Warren IL-
1152 PM CDT Fri Jun 18 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR NORTHEASTERN HENDERSON AND WARREN COUNTIES...
At 1152 PM CDT, a severe thunderstorm was located near Kirkwood, or
near Monmouth, moving east at 35 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...
Monmouth, Oquawka, Roseville, Kirkwood, Little York, Biggsville,
Gladstone, Rozetta, Little Swan Lake, Greenbush, Coldbrook, Bald
Bluff, Berwick, Media, Gerlaw, Larchland, Monmouth Municipal Airport,
Cameron, Warren County Fairgrounds and Youngstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4063 9065 4072 9086 4081 9095 4088 9104
4092 9096 4096 9095 4102 9094 4102 9044
4063 9045
TIME...MOT...LOC 0452Z 281DEG 30KT 4084 9067
HAIL...1.00IN
WIND...60MPH
$$
Ervin069
WWUS53 KDVN 190500
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
1200 AM CDT Sat Jun 19 2021
ILC071-187-190530-
/O.CON.KDVN.SV.W.0009.000000T0000Z-210619T0530Z/
Henderson IL-Warren IL-
1200 AM CDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR NORTHEASTERN HENDERSON AND WARREN COUNTIES...
At 1200 AM CDT, a severe thunderstorm was located 7 miles southeast
of Monmouth, moving east at 35 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Monmouth, Oquawka, Roseville, Kirkwood, Little York, Biggsville,
Gladstone, Rozetta, Little Swan Lake, Greenbush, Coldbrook, Bald
Bluff, Berwick, Media, Gerlaw, Larchland, Monmouth Municipal Airport,
Cameron, Warren County Fairgrounds and Youngstown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4063 9065 4074 9079 4082 9089 4086 9097
4092 9096 4096 9095 4102 9094 4102 9044
4063 9045
TIME...MOT...LOC 0500Z 281DEG 30KT 4082 9058
HAIL...1.00IN
WIND...60MPH
$$
Ervin175
WWUS53 KDVN 190512
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
1212 AM CDT Sat Jun 19 2021
ILC071-190522-
/O.CAN.KDVN.SV.W.0009.000000T0000Z-210619T0530Z/
Henderson IL-
1212 AM CDT Sat Jun 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN HENDERSON COUNTY
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 500 AM CDT for
west central Illinois.
LAT...LON 4063 9058 4076 9061 4087 9074 4101 9079
4102 9078 4102 9044 4063 9045
TIME...MOT...LOC 0512Z 282DEG 27KT 4080 9046
$$
ILC187-190530-
/O.CON.KDVN.SV.W.0009.000000T0000Z-210619T0530Z/
Warren IL-
1212 AM CDT Sat Jun 19 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM CDT
FOR WARREN COUNTY...
At 1212 AM CDT, a severe thunderstorm was located near Abingdon, or
11 miles south of Galesburg, moving east at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Monmouth, Kirkwood, Little York, Little Swan Lake, Greenbush,
Coldbrook, Berwick, Ormonde, Gerlaw, Larchland, Monmouth Municipal
Airport, Cameron and Eleanor.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4063 9058 4076 9061 4087 9074 4101 9079
4102 9078 4102 9044 4063 9045
TIME...MOT...LOC 0512Z 282DEG 27KT 4080 9046
HAIL...1.00IN
WIND...60MPH
$$
Ervin423
WWUS53 KDVN 190516 RRA
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
1216 AM CDT Sat Jun 19 2021
ILC187-190526-
/O.CAN.KDVN.SV.W.0009.000000T0000Z-210619T0530Z/
Warren IL-
1216 AM CDT Sat Jun 19 2021
...THE SEVERE THUNDERSTORM WARNING FOR WARREN COUNTY IS CANCELLED...
The severe thunderstorm which prompted the warning has weakened.
moved out of the warned area. Therefore, the warning has been
cancelled. However heavy rain is still possible with this
thunderstorm.
A Severe Thunderstorm Watch remains in effect until 500 AM CDT for
west central Illinois.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
the Quad Cities.
LAT...LON 4063 9058 4076 9061 4087 9074 4101 9079
4102 9078 4102 9044 4063 9045
TIME...MOT...LOC 0514Z 282DEG 27KT 4079 9042
$$
ErvinThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 18, 10:17 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Mercer | 58 min |
| Jun 18, 10:45 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Mercer, Warren | 48 min |
| Jun 18, 11:02 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Warren | 43 min |
| Jun 19, 1:28 AM CDT | Special Weather Statement | DVN | Warren | 2 hr |
| Jun 19, 2:01 AM CDT | Special Weather Statement | DVN | Hancock, McDonough | 59 min |
| Jun 19, 2:27 AM CDT | Special Weather Statement | DVN | McDonough | 33 min |
| Jun 19, 4:33 AM CDT | Severe Thunderstorm Warning | DVN | Hancock | 57 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.