Alert archive / Illinois / Tornado Warnings in 2017
Tornado Warning 37, NWS Quad Cities, IA
NWS Quad Cities, IA issued this tornado warning at May 17, 2017, 8:05 PM CDT for Henry County, Mercer County, Rock Island County, Illinois. It was in force for 40 min. 7 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
- May 17, 2017, 8:05 PM CDT (01:05 UTC)
- Expired
- May 17, 2017, 8:45 PM CDT
- In force
- 40 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Tornado
- Observed
- Hail
- 1.5 in
Counties Henry County, IL, Mercer County, IL, Rock Island County, IL
The radar
The Quad Cities radar (KDVN), 33 km from the middle of the area, began a volume at 01:08 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 |
|---|---|---|---|
| May 17, 8:07 PM CDT | FUNNEL CLOUD | Swedona, IL | PICTURE FROM TWITTER, TIME ESIMATED. |
| May 17, 8:22 PM CDT | HAIL 1 | 1 Nnw Morristown, IL | DIME TO QUARTERS. |
| May 17, 8:25 PM CDT | TSTM WND DMG | 3 E Colona, IL | NUMEROUS TREES AND SOME FAR OUTBUILDINGS BLOWN DOWN ALONG ROUTE 6 BETWEEN COLONA AND GENESEO. |
| May 17, 8:30 PM CDT | HAIL 0.88 | 2 Nw Geneseo, IL | |
| May 17, 8:35 PM CDT | TSTM WND DMG | 4 N Geneseo, IL | SEVERAL LARGE TREES BLOWN DOWN ALONG HIGHWAY 92 NORTH OF GENESEO |
| May 17, 8:35 PM CDT | HAIL 0.5 | Geneseo, IL | |
| May 17, 8:45 PM CDT | FUNNEL CLOUD | 4 Wnw Atkinson, IL | UNCONFIRMED PUBLIC REPORT RELAYED TO LAW ENFORCEMENT. |
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 |
|---|---|---|---|
| May 17, 3:44 PM CDT | Tornado Watch | SPC | 9 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.1 hours before the alert went out and 29 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
- 1161 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1502 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 306 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 7.2
The text
As transmitted.
347
WFUS53 KDVN 180105
TORDVN
ILC073-131-161-180145-
/O.NEW.KDVN.TO.W.0037.170518T0105Z-170518T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
805 PM CDT WED MAY 17 2017
The National Weather Service in the Quad Cities has issued a
* Tornado Warning for...
Southeastern Rock Island County in northwestern Illinois...
Northeastern Mercer County in northwestern Illinois...
Northwestern Henry County in northwestern Illinois...
* Until 845 PM CDT
* At 805 PM CDT, a tornado producing storm was located over Cable, or
13 miles west of Cambridge, moving northeast at 40 mph.
HAZARD...Damaging tornado and ping pong ball size hail.
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 tornadic storm will be near...
Orion, Andover and Lynn Center around 815 PM CDT.
Warner around 820 PM CDT.
Coal Valley around 825 PM CDT.
Colona around 830 PM CDT.
Cleveland and Osborn around 835 PM CDT.
Geneseo around 840 PM CDT.
Other locations impacted by this tornadic thunderstorm include Henry
County Fairgrounds, Ophiem, Osco, Sunny Hill Estates, Morristown,
Green River, Griffin, Shady Beach, Swedona and Joslin.
This includes the following highways...
Interstate 80 in Illinois between mile markers 6 and 28.
Interstate 74 in Illinois between mile markers 10 and 30.
Interstate 88 between mile markers 2 and 9.
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.
&&
LAT...LON 4115 9043 4128 9061 4161 9022 4159 9017
4159 9018 4158 9018 4158 9015 4148 8987
TIME...MOT...LOC 0105Z 220DEG 33KT 4128 9046
TORNADO...OBSERVED
HAIL...1.50IN
$$
123 follow-up statements
978
WWUS53 KDVN 180112
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
812 PM CDT WED MAY 17 2017
ILC073-131-161-180145-
/O.CON.KDVN.TO.W.0037.000000T0000Z-170518T0145Z/
Rock Island IL-Mercer IL-Henry IL-
812 PM CDT WED MAY 17 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHEASTERN ROCK ISLAND...NORTHEASTERN MERCER AND NORTHWESTERN HENRY
COUNTIES...
At 812 PM CDT, a confirmed tornado was located over Orion, or 10
miles west of Cambridge, moving northeast at 40 mph.
HAZARD...Damaging tornado and ping pong ball size hail.
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...
Colona around 825 PM CDT.
Cleveland and Osborn around 830 PM CDT.
Geneseo around 835 PM CDT.
Other locations impacted by this tornadic thunderstorm include Henry
County Fairgrounds, Ophiem, Osco, Sunny Hill Estates, Morristown,
Green River, Griffin, Shady Beach, Swedona and Joslin.
This includes the following highways...
Interstate 80 in Illinois between mile markers 6 and 28.
Interstate 74 in Illinois between mile markers 10 and 30.
Interstate 88 between mile markers 2 and 9.
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!
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4115 9043 4128 9061 4161 9022 4159 9017
4159 9018 4158 9018 4158 9015 4148 8987
TIME...MOT...LOC 0112Z 226DEG 37KT 4134 9038
TORNADO...OBSERVED
HAIL...1.50IN
$$
12736
WWUS53 KDVN 180122 RRA
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
822 PM CDT WED MAY 17 2017
ILC131-180130-
/O.CAN.KDVN.TO.W.0037.000000T0000Z-170518T0145Z/
Mercer IL-
822 PM CDT WED MAY 17 2017
...THE TORNADO WARNING FOR NORTHEASTERN MERCER COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois.
LAT...LON 4126 9024 4138 9049 4161 9022 4159 9017
4159 9018 4158 9018 4158 9015 4148 8987
TIME...MOT...LOC 0120Z 222DEG 35KT 4140 9029
$$
ILC073-161-180145-
/O.CON.KDVN.TO.W.0037.000000T0000Z-170518T0145Z/
Rock Island IL-Henry IL-
822 PM CDT WED MAY 17 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
SOUTHEASTERN ROCK ISLAND AND CENTRAL HENRY COUNTIES...
At 820 PM CDT, One or two circulations were located near Warner, or
8 miles northwest of Cambridge, moving northeast at 40 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Cleveland and Osborn around 830 PM CDT.
Geneseo around 835 PM CDT.
Other locations impacted by this tornadic thunderstorm include Henry
County Fairgrounds, Osco, Sunny Hill Estates, Morristown, Green
River, Shady Beach, Joslin, Sunny Hill and Dayton.
This includes the following highways...
Interstate 80 in Illinois between mile markers 6 and 28.
Interstate 74 in Illinois between mile markers 11 and 23.
Interstate 88 between mile markers 2 and 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4126 9024 4138 9049 4161 9022 4159 9017
4159 9018 4158 9018 4158 9015 4148 8987
TIME...MOT...LOC 0120Z 222DEG 35KT 4140 9029
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
12695
WWUS53 KDVN 180137
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
837 PM CDT WED MAY 17 2017
ILC161-180145-
/O.CAN.KDVN.TO.W.0037.000000T0000Z-170518T0145Z/
Rock Island IL-
837 PM CDT WED MAY 17 2017
...THE TORNADO WARNING FOR SOUTHEASTERN ROCK ISLAND COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
A tornado watch remains in effect until 1100 PM CDT for northwestern
Illinois.
LAT...LON 4130 9017 4144 9031 4158 9014 4148 8987
TIME...MOT...LOC 0135Z 244DEG 32KT 4143 9010
$$
ILC073-180145-
/O.CON.KDVN.TO.W.0037.000000T0000Z-170518T0145Z/
Henry IL-
837 PM CDT WED MAY 17 2017
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR NORTHERN
HENRY COUNTY...
At 835 PM CDT, a severe thunderstorm capable of producing a tornado
was located south of Geneseo, or 8 miles northeast of Cambridge,
moving northeast at 35 mph.
HAZARD...Tornado and quarter size hail.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Atkinson around 840 PM CDT.
This includes Interstate 80 in Illinois between mile markers 12 and
28.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Heavy rainfall may hide this tornado. Do not wait to see or hear the
tornado. TAKE COVER NOW!
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
&&
LAT...LON 4130 9017 4144 9031 4158 9014 4148 8987
TIME...MOT...LOC 0135Z 244DEG 32KT 4143 9010
TORNADO...RADAR INDICATED
HAIL...1.00IN
$$
12The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 7:00 PM CDT | Tornado Warning | DVN | Henderson, Mercer, Warren | 45 min |
| May 17, 7:14 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Mercer, Rock Island | 61 min |
| May 17, 7:30 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 45 min |
| May 17, 7:37 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island, Warren | 38 min |
| May 17, 8:05 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson, Whiteside | 55 min |
| May 17, 8:08 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island, Whiteside | 67 min |
| May 17, 8:46 PM CDT | Tornado Warning | DVN | Bureau, Henry, Whiteside | 23 min |
| May 17, 9:00 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Rock Island, Stephenson, Whiteside | 60 min |
| May 17, 9:38 PM CDT | Severe Thunderstorm Warning | DVN | Bureau, Henry | 52 min |
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.