Alert archive / Illinois / Tornado Warnings in 2020
Tornado Warning 29, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Jul 9, 2020, 6:22 PM CDT for Henderson County, Warren County, Illinois. It was in force for 38 min. 2 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
- Jul 9, 2020, 6:22 PM CDT (23:22 UTC)
- Expired
- Jul 9, 2020, 7:00 PM CDT
- In force
- 38 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Henderson County, IL, Warren County, IL
The radar
The Quad Cities radar (KDVN), 74 km from the middle of the area, began a volume at 23:23 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 |
|---|---|---|---|
| Jul 9, 6:34 PM CDT | FUNNEL CLOUD | 3 N Kirkwood, IL | RELAYED A REPORT OF A FUNNEL CLOUD. TIME ESTIMATED USING RADAR. |
| Jul 9, 7:08 PM CDT | TSTM WND DMG | 2 W Coldbrook, IL | DELAYED REPORT, SPOTTER REPORTED 2 TO 3 INCH DIAMETER TREE LIMBS DOWN AND CORN FLATTENED OR BROKEN OFF. TIME IS ESTIMATED USING RADAR. |
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 |
|---|---|---|---|
| Jul 9, 11:05 AM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.4 hours before the alert went out and 76 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
- 1056 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1202 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
304
WFUS53 KDVN 092322
TORDVN
ILC071-187-100000-
/O.NEW.KDVN.TO.W.0029.200709T2322Z-200710T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
622 PM CDT Thu Jul 9 2020
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Northeastern Henderson County in west central Illinois...
Northern Warren County in west central Illinois...
* Until 700 PM CDT.
* At 622 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Rozetta, or 8 miles east of Oquawka, moving east
at 35 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* This dangerous storm will be near...
Kirkwood around 625 PM CDT.
Little York around 630 PM CDT.
Monmouth and Lake Warren around 635 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Eleanor, Gerlaw, Monmouth Municipal Airport, Coldbrook, Cameron and
Alexis.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4086 9088 4099 9091 4107 9059 4106 9044
4087 9044
TIME...MOT...LOC 2322Z 261DEG 31KT 4092 9080
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
DC4 follow-up statements
349
WWUS53 KDVN 092324
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
624 PM CDT Thu Jul 9 2020
ILC071-187-100000-
/O.CON.KDVN.TO.W.0029.000000T0000Z-200710T0000Z/
Henderson IL-Warren IL-
624 PM CDT Thu Jul 9 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
NORTHEASTERN HENDERSON AND NORTHERN WARREN COUNTIES...
At 623 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Kirkwood, or near Monmouth, moving east at 35 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Monmouth and Lake Warren around 635 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Eleanor, Gerlaw, Monmouth Municipal Airport, Coldbrook, Cameron and
Alexis.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4086 9088 4099 9091 4107 9059 4106 9044
4087 9044
TIME...MOT...LOC 2323Z 261DEG 31KT 4092 9077
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
DC538
WWUS53 KDVN 092332
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
632 PM CDT Thu Jul 9 2020
ILC071-187-100000-
/O.CON.KDVN.TO.W.0029.000000T0000Z-200710T0000Z/
Henderson IL-Warren IL-
632 PM CDT Thu Jul 9 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR
NORTHEASTERN HENDERSON AND NORTHERN WARREN COUNTIES...
At 632 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Monmouth, moving east at 35 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Lake Warren around 640 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Eleanor, Gerlaw, Monmouth Municipal Airport, Coldbrook, Cameron and
Alexis.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4086 9088 4099 9091 4107 9059 4106 9044
4087 9044
TIME...MOT...LOC 2332Z 261DEG 31KT 4093 9066
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
DC884
WWUS53 KDVN 092346
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
646 PM CDT Thu Jul 9 2020
ILC071-187-100000-
/O.CON.KDVN.TO.W.0029.000000T0000Z-200710T0000Z/
Henderson IL-Warren IL-
646 PM CDT Thu Jul 9 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR EAST
CENTRAL HENDERSON AND NORTHERN WARREN COUNTIES...
At 646 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Monmouth, moving east at 25 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Lake Warren around 650 PM CDT.
Other locations impacted by this tornadic thunderstorm include
Eleanor, Gerlaw, Monmouth Municipal Airport, Coldbrook, Cameron and
Alexis.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4087 9082 4101 9083 4107 9059 4106 9044
4087 9044
TIME...MOT...LOC 2346Z 258DEG 23KT 4095 9063
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
DC511
WWUS53 KDVN 092357 RRA
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
657 PM CDT Thu Jul 9 2020
ILC071-187-100006-
/O.EXP.KDVN.TO.W.0029.000000T0000Z-200710T0000Z/
Henderson IL-Warren IL-
657 PM CDT Thu Jul 9 2020
...THE TORNADO WARNING FOR EAST CENTRAL HENDERSON AND NORTHERN WARREN
COUNTIES WILL EXPIRE AT 700 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 700 PM CDT for
northwestern and west central Illinois.
LAT...LON 4087 9082 4101 9083 4107 9059 4106 9044
4087 9044
TIME...MOT...LOC 2356Z 261DEG 31KT 4096 9054
$$
DCThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 12:59 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 31 min |
| Jul 9, 4:16 PM CDT | Flash Flood Warning | DVN | Jo Daviess | 3 hr |
| Jul 9, 4:22 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 23 min |
| Jul 9, 5:03 PM CDT | Flash Flood Warning | DVN | Jo Daviess | 2 hr |
| Jul 9, 5:08 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 52 min |
| Jul 9, 5:35 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 40 min |
| Jul 9, 6:06 PM CDT | Severe Thunderstorm Warning | DVN | Henderson, Mercer, Warren | 39 min |
| Jul 9, 6:09 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island, Whiteside | 51 min |
Nearby
Tornado Warnings in Illinois, 2020Every tornado warning in 2020Tornadoes in 2020
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.