Alert archive / Illinois / Tornado Warnings in 2017
Tornado Warning 51, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at Jul 21, 2017, 7:18 PM CDT for Carroll County, Whiteside County, Illinois. It was in force for 42 min. 1 report 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 21, 2017, 7:18 PM CDT (00:18 UTC)
- Expired
- Jul 21, 2017, 8:00 PM CDT
- In force
- 42 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Carroll County, IL, Whiteside County, IL
The radar
The Quad Cities radar (KDVN), 61 km from the middle of the area, began a volume at 00:21 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 21, 7:48 PM CDT | TSTM WND DMG | Milledgeville, IL | PUBLIC REPORTED 3 INCH DIAMETER TREE BRANCES DOWN FROM THE STORM |
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 21, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Lincoln, IL (KILX), launched 00:00Z, 0.3 hours before the alert went out and 227 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
- 2094 J/kg
- Mixed-layer CIN
- -2 J/kg
- Mixed-layer LCL
- 1572 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 6.5
The text
As transmitted.
282
WFUS53 KDVN 220018
TORDVN
ILC015-195-220100-
/O.NEW.KDVN.TO.W.0051.170722T0018Z-170722T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
718 PM CDT FRI JUL 21 2017
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Northeastern Whiteside County in northwestern Illinois...
Southeastern Carroll County in northwestern Illinois...
* Until 800 PM CDT
* At 717 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Fairhaven, or 8 miles north of Morrison, moving
east at 20 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...
Fairhaven around 730 PM CDT.
Milledgeville and Coleta around 755 PM CDT.
Other locations impacted by this tornadic thunderstorm include Hitt,
Ideal, Franklin Corners, Carroll County Fairgrounds, Malvern, Ustick,
White Pigeon, Morrison-Rockwood State Park and Thomson.
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.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4190 9012 4200 9009 4200 8972 4178 8978
TIME...MOT...LOC 0017Z 287DEG 16KT 4192 9003
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Gibbs3 follow-up statements
508
WWUS53 KDVN 220025
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
725 PM CDT FRI JUL 21 2017
ILC015-195-220100-
/O.CON.KDVN.TO.W.0051.000000T0000Z-170722T0100Z/
Whiteside IL-Carroll IL-
725 PM CDT FRI JUL 21 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHEASTERN WHITESIDE AND SOUTHEASTERN CARROLL COUNTIES...
At 725 PM CDT, a confirmed tornado was located near Fulton, or 7
miles northeast of Clinton, moving east at 35 mph.
HAZARD...Damaging tornado.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Argo Fay around 735 PM CDT.
Fairhaven around 740 PM CDT.
Coleta around 750 PM CDT.
Milledgeville around 755 PM CDT.
Other locations impacted by this tornadic thunderstorm include Hitt,
Ideal, Franklin Corners, Carroll County Fairgrounds, Malvern, Ustick,
White Pigeon, Morrison-Rockwood State Park and Thomson.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4190 9012 4200 9009 4200 8972 4178 8978
TIME...MOT...LOC 0025Z 260DEG 30KT 4189 9010
TORNADO...OBSERVED
HAIL...<.75IN
$$
Gibbs725
WWUS53 KDVN 220037
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
737 PM CDT FRI JUL 21 2017
ILC015-195-220100-
/O.CON.KDVN.TO.W.0051.000000T0000Z-170722T0100Z/
Whiteside IL-Carroll IL-
737 PM CDT FRI JUL 21 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHEASTERN WHITESIDE AND SOUTHEASTERN CARROLL COUNTIES...
At 737 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Fairhaven, or 10 miles south of Mount Carroll,
moving east at 20 mph. Another possible tornado was located over
Thomson 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...
Coleta around 750 PM CDT.
Milledgeville around 755 PM CDT.
Other locations impacted by this tornadic thunderstorm include Hitt,
Ideal, Franklin Corners, Carroll County Fairgrounds, Malvern, Ustick,
White Pigeon, Morrison-Rockwood State Park and Thomson.
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.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4190 9012 4200 9009 4200 8972 4178 8978
TIME...MOT...LOC 0037Z 258DEG 19KT 4195 8992
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Gibbs881
WWUS53 KDVN 220051
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
751 PM CDT FRI JUL 21 2017
ILC015-195-220100-
/O.CON.KDVN.TO.W.0051.000000T0000Z-170722T0100Z/
Whiteside IL-Carroll IL-
751 PM CDT FRI JUL 21 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR NORTH
CENTRAL WHITESIDE AND SOUTHEASTERN CARROLL COUNTIES...
At 751 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Milledgeville, or 12 miles southeast of Mount
Carroll, moving east at 20 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Milledgeville around 755 PM CDT.
Other locations impacted by this tornadic thunderstorm include Hitt,
Ideal, Franklin Corners and Carroll County Fairgrounds.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
&&
LAT...LON 4190 9001 4200 9003 4200 8972 4189 8975
TIME...MOT...LOC 0051Z 258DEG 19KT 4197 8982
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
GibbsThe office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 7:23 PM CDT | Tornado Warning | DVN | Whiteside | 22 min |
| Jul 21, 7:33 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Rock Island, Whiteside | 57 min |
| Jul 21, 7:33 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Henry, Mercer, Rock Island | 57 min |
| Jul 21, 7:51 PM CDT | Flash Flood Warning | DVN | Jo Daviess, Stephenson | 6 hr |
| Jul 21, 8:30 PM CDT | Special Weather Statement | DVN | Bureau, Putnam | 45 min |
| Jul 21, 9:06 PM CDT | Flash Flood Warning | DVN | Carroll, Whiteside | 4 hr |
| Jul 21, 11:10 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 65 min |
| Jul 22, 12:37 AM CDT | Flash Flood Warning | DVN | Carroll | 6 hr |
| Jul 22, 1:45 AM CDT | Flash Flood Warning | DVN | Jo Daviess | 6 hr |
| Jul 22, 6:05 AM CDT | Areal Flood Warning | DVN | Carroll, Jo Daviess, Stephenson | 18 hr |
| Jul 22, 12:10 PM CDT | River Flood Warning | DVN | Rock Island | 7 days |
| Jul 22, 12:20 PM CDT | Areal Flood Warning | DVN | Bureau, Henry, Putnam, Rock Island, Whiteside | 12 hr |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | Rock Island, Whiteside | 5 days |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | Rock Island | 7 days |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | Mercer, Rock Island | 8 days |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | Mercer | 24 hr |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | Henderson, Mercer | 24 hr |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | Henderson | 24 hr |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | Hancock, Henderson | 24 hr |
| Jul 22, 12:23 PM CDT | River Flood Watch | DVN | Hancock | 3 days |
Nearby
Tornado Warnings in Illinois, 2017Every tornado warning in 2017Tornadoes in 2017
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.