Alert archive / Illinois / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 113, NWS Quad Cities, IA
NWS Quad Cities, IA issued this severe thunderstorm warning at Jun 17, 2017, 6:25 PM CDT for Carroll County, Whiteside County, Illinois. It was in force for 35 min. 4 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 17, 2017, 6:25 PM CDT (23:25 UTC)
- Expired
- Jun 17, 2017, 7:00 PM CDT
- In force
- 35 min
- Issued by
- NWS Quad Cities, IA
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Carroll County, IL, Whiteside County, IL
The radar
The Quad Cities radar (KDVN), 66 km from the middle of the area, began a volume at 23:27 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 17, 6:25 PM CDT | TSTM WND DMG | 4 Ese Morrison, IL | DELAYED REPORT VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR. SEVERAL FRUIT TREES UPROOTED ON A FARM 0.4 MILES NORTH OF THE BUNKER HILL ROAD AND YAGER ROAD INTERSECTION. |
| Jun 17, 6:25 PM CDT | TSTM WND DMG | 4 Se Morrison, IL | DELAYED REPORT VIA SOCIAL MEDIA. TIME ESTIMATED FROM RADAR. SEVERAL POWER POLES SNAPPED AT THE INTERSECTION OF BUNKER HILL RD AND YAGER ROAD. |
| Jun 17, 6:51 PM CDT | HAIL 1 | Rock Falls, IL | PASSED ALONG BY NWS CHICAGO |
| Jun 17, 6:51 PM CDT | HAIL 1 | Se Rock Falls, IL |
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 17, 5:39 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Davenport, (KDVN), launched 12:00Z, 11.4 hours before the alert went out and 59 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
- 613 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 726 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 122 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.2
The text
As transmitted.
234
WUUS53 KDVN 172325
SVRDVN
ILC015-195-180015-
/O.NEW.KDVN.SV.W.0113.170617T2325Z-170618T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Quad Cities IA/IL
625 PM CDT SAT JUN 17 2017
The National Weather Service in the Quad Cities has issued a
* Severe Thunderstorm Warning for...
Whiteside County in northwestern Illinois...
Southeastern Carroll County in northwestern Illinois...
* Until 715 PM CDT
* At 624 PM CDT, a severe thunderstorm was located over Morrison,
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...
Sterling, Rock Falls, Morrison, Prophetstown, Milledgeville,
Lyndon, Coleta, Emerson, Union Grove, Ustick, Fenton, Round Grove,
Portland Corners, Carroll County Fairgrounds, Penrose, Malvern,
Como, White Pigeon, Morrison-Rockwood State Park and Denrock.
This includes Interstate 88 between mile markers 21 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
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 4166 9006 4192 9011 4197 8969 4193 8969
4193 8963 4168 8963
TIME...MOT...LOC 2324Z 260DEG 35KT 4179 8996
HAIL...1.00IN
WIND...60MPH
$$
122 follow-up statements
616
WWUS53 KDVN 172345 RRA
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
645 PM CDT SAT JUN 17 2017
ILC015-195-180015-
/O.CON.KDVN.SV.W.0113.000000T0000Z-170618T0015Z/
Whiteside IL-Carroll IL-
645 PM CDT SAT JUN 17 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM CDT
FOR NORTHEASTERN WHITESIDE AND SOUTHEASTERN CARROLL COUNTIES...
At 644 PM CDT, a severe thunderstorm was located near Rock Falls,
moving east at 35 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
Locations impacted include...
Sterling, Rock Falls, Milledgeville, Coleta, Emerson, Round Grove,
Yeoward Addition, Whiteside County Airport, Galt, Franklin Corners,
Carroll County Fairgrounds, Penrose, Malvern, Como, White Pigeon,
Grimes Addition, Douglas Park and Agnew.
This includes Interstate 88 between mile markers 32 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
sturdy building.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4167 8984 4194 8994 4197 8969 4193 8969
4193 8963 4168 8963
TIME...MOT...LOC 2344Z 267DEG 38KT 4176 8962
HAIL...1.25IN
WIND...60MPH
$$
12740
WWUS53 KDVN 180000
SVSDVN
Severe Weather Statement
National Weather Service Quad Cities IA/IL
700 PM CDT SAT JUN 17 2017
ILC015-195-180009-
/O.CAN.KDVN.SV.W.0113.000000T0000Z-170618T0015Z/
Whiteside IL-Carroll IL-
700 PM CDT SAT JUN 17 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN WHITESIDE AND
SOUTHEASTERN CARROLL COUNTIES IS CANCELLED...
The storm which prompted the warning has moved east out of the area.
Therefore, the warning has been cancelled. However gusty winds and
heavy rain are still possible with additional thunderstorms moving
east across the area through 730 pm CDT.
A severe thunderstorm watch remains in effect until 100 AM CDT for
northwestern Illinois.
LAT...LON 4167 8984 4194 8994 4197 8969 4193 8969
4193 8963 4168 8963
TIME...MOT...LOC 2355Z 260DEG 35KT 4179 8943
$$
12The office that day
Everything else NWS Quad Cities, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 2:00 AM CDT | Special Weather Statement | DVN | Rock Island | 60 min |
| Jun 17, 3:06 AM CDT | Special Weather Statement | DVN | Rock Island, Whiteside | 54 min |
| Jun 17, 3:56 PM CDT | Special Weather Statement | DVN | Whiteside | 19 min |
| Jun 17, 5:36 PM CDT | Severe Thunderstorm Warning | DVN | Mercer, Rock Island | 39 min |
| Jun 17, 5:57 PM CDT | Special Weather Statement | DVN | Stephenson | 33 min |
| Jun 17, 6:05 PM CDT | Severe Thunderstorm Warning | DVN | Henry, Mercer, Rock Island | 40 min |
Nearby
Severe Thunderstorm Warnings in Illinois, 2017Every severe thunderstorm warning 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.