Alert archive / Illinois / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 5, NWS Quad Cities, IA

June 18, 2021Henderson County, Warren County, Illinois

NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 18, 2021, 11:02 PM CDT for Henderson County, Warren County, Illinois. It was in force for 43 min. 3 reports 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: Jun 18, 2021, 11:02 PM CDT (04:02 UTC)
Expired: Jun 18, 2021, 11:45 PM CDT
In force: 43 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Henderson County, IL, Warren County, IL

The radar

The Quad Cities radar (KDVN), 84 km from the middle of the area, began a volume at 04:04 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
Jun 18, 11:05 PM CDT	TSTM WND DMG	Monmouth, IL
Jun 18, 11:24 PM CDT	TSTM WND DMG	2 Sw Phelps, IL	TIME ESTIMATED FROM RADAR. TREES DOWN ON 140TH AVE BETWEEN 100TH AND 110TH STREETS.
Jun 18, 11:27 PM CDT	TSTM WND DMG	2 Ssw Phelps, IL	TIME ESTIMATED FROM RADAR. TREES DOWN ON 110TH STREET BETWEEN 125TH AND 140TH AVENUES.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

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, 4.0 hours before the alert went out and 87 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

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

Open this sounding in Storm Lab

The text

As transmitted.

252 
WUUS53 KDVN 190402
SVRDVN
ILC071-187-190445-
/O.NEW.KDVN.SV.W.0005.210619T0402Z-210619T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
1102 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 1145 PM CDT.

* At 1102 PM CDT, a severe thunderstorm was located over Rozetta, or
  near Oquawka, moving east at 25 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 be near...
  Kirkwood around 1115 PM CDT.

Other locations in the path of this severe thunderstorm include
Monmouth.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
sturdy building.

&&

LAT...LON 4083 9108 4090 9101 4092 9096 4103 9094
      4095 9044 4071 9044
TIME...MOT...LOC 0402Z 280DEG 20KT 4095 9083 

HAIL...1.00IN
WIND...60MPH
 
$$

Ervin

3 follow-up statements

132 
WWUS53 KDVN 190409
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1109 PM CDT Fri Jun 18 2021

ILC071-187-190445-
/O.CON.KDVN.SV.W.0005.000000T0000Z-210619T0445Z/
Henderson IL-Warren IL-
1109 PM CDT Fri Jun 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR NORTHEASTERN HENDERSON AND CENTRAL WARREN COUNTIES...

At 1109 PM CDT, a severe thunderstorm was located over Monmouth,
moving east at 25 mph.

HAZARD...70 mph wind gusts and quarter size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

This severe storm will be near...
  Monmouth around 1115 PM CDT.

LAT...LON 4083 9108 4090 9101 4092 9096 4103 9094
      4095 9044 4071 9044
TIME...MOT...LOC 0409Z 281DEG 23KT 4092 9070 

HAIL...1.00IN
WIND...70MPH
 
$$

Ervin

467 
WWUS53 KDVN 190422
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1122 PM CDT Fri Jun 18 2021

ILC071-187-190445-
/O.CON.KDVN.SV.W.0005.000000T0000Z-210619T0445Z/
Henderson IL-Warren IL-
1122 PM CDT Fri Jun 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR NORTHEASTERN HENDERSON AND CENTRAL WARREN COUNTIES...

At 1122 PM CDT, a severe thunderstorm was located near Abingdon, or 7
miles southwest of Galesburg, moving east at 35 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

This severe thunderstorm will remain over mainly rural areas of
northeastern Henderson and central Warren Counties, including the
following locations... Lone Tree, Ormonde, Ponemah, Delabar State
Park, Eleanor, Larchland, Smithshire, Monmouth Municipal Airport,
Berwick and Coldbrook.

LAT...LON 4083 9108 4090 9101 4092 9096 4103 9094
      4095 9044 4071 9044
TIME...MOT...LOC 0422Z 283DEG 29KT 4087 9049 

HAIL...1.25IN
WIND...70MPH
 
$$

Ervin

327 
WWUS53 KDVN 190428
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1128 PM CDT Fri Jun 18 2021

ILC071-187-190445-
/O.CON.KDVN.SV.W.0005.000000T0000Z-210619T0445Z/
Henderson IL-Warren IL-
1128 PM CDT Fri Jun 18 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT
FOR NORTHEASTERN HENDERSON AND CENTRAL WARREN COUNTIES...

At 1128 PM CDT, a severe thunderstorm was located 7 miles northeast
of Roseville, or 8 miles southeast of Monmouth, moving southeast at
25 mph.

HAZARD...70 mph wind gusts and half dollar size hail.

SOURCE...Radar indicated.

IMPACT...Hail damage to vehicles is expected. Expect considerable 
         tree damage. Wind damage is also likely to mobile homes, 
         roofs, and outbuildings.

This severe thunderstorm will remain over mainly rural areas of
northeastern Henderson and central Warren Counties, including the
following locations... Lone Tree, Ormonde, Ponemah, Delabar State
Park, Larchland, Smithshire, Monmouth Municipal Airport, Berwick,
Coldbrook and Cameron.

LAT...LON 4083 9107 4084 9107 4090 9101 4092 9096
      4102 9094 4094 9044 4071 9044
TIME...MOT...LOC 0428Z 303DEG 22KT 4080 9056 

HAIL...1.25IN
WIND...70MPH
 
$$

Ervin

The 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, 11:36 PM CDT	Severe Thunderstorm Warning	DVN	Henderson, Warren	40 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, 2021 Every 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.