Alert archive / Illinois / Tornado Warnings in 2017

Tornado Warning 17, NWS Quad Cities, IA

March 6, 2017Carroll County, Whiteside County, Illinois

NWS Quad Cities, IA issued this tornado warning at Mar 6, 2017, 10:56 PM CST for Carroll County, Whiteside County, Illinois. It was in force for 27 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: Mar 6, 2017, 10:56 PM CST (04:56 UTC)
Expired: Mar 6, 2017, 11:23 PM CST
In force: 27 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), 64 km from the middle of the area, began a volume at 04:59 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
Mar 6, 11:17 PM CST	HAIL 0.25	Milledgeville, 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
Mar 6, 8:52 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 4.9 hours before the alert went out and 58 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: 39 J/kg
Mixed-layer CIN: -343 J/kg
Mixed-layer LCL: 1016 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 407 m²/s²
0-3 km storm-relative helicity: 489 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

899 
WFUS53 KDVN 070456
TORDVN
ILC015-195-070545-
/O.NEW.KDVN.TO.W.0017.170307T0456Z-170307T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Quad Cities IA/IL
1056 PM CST MON MAR 6 2017

The National Weather Service in the Quad Cities has issued a

* Tornado Warning for...
  Northwestern Whiteside County in northwestern Illinois...
  Southeastern Carroll County in northwestern Illinois...

* Until 1145 PM CST
    
* At 1056 PM CST, a severe thunderstorm capable of producing a
  tornado was located near Erie, or 9 miles southwest of Morrison,
  moving northeast at 60 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...
  Morrison around 1105 PM CST. 
  Fairhaven and Coleta around 1115 PM CST. 
  Milledgeville around 1120 PM CST. 

Other locations impacted by this tornadic thunderstorm include Hitt,
Franklin Corners, Carroll County Fairgrounds, Penrose, Round Grove,
Malvern, Ustick, White Pigeon, Morrison-Rockwood State Park and
Whiteside County Fairgrounds.

This includes Interstate 88 between mile markers 16 and 27.
 
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.

&&

LAT...LON 4163 9011 4174 9022 4215 8969 4193 8969
      4193 8963 4189 8963
TIME...MOT...LOC 0456Z 227DEG 52KT 4172 9010 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$

MCCLURE

4 follow-up statements

858 
WWUS53 KDVN 070501
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1101 PM CST MON MAR 6 2017

ILC015-195-070545-
/O.CON.KDVN.TO.W.0017.000000T0000Z-170307T0545Z/
Whiteside IL-Carroll IL-
1101 PM CST MON MAR 6 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CST FOR
NORTHWESTERN WHITESIDE AND SOUTHEASTERN CARROLL COUNTIES...
    
At 1101 PM CST, a severe thunderstorm capable of producing a tornado
was located over Morrison, moving northeast at 60 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...
  Fairhaven around 1110 PM CST. 
  Coleta around 1115 PM CST. 
  Milledgeville around 1120 PM CST. 

Other locations impacted by this tornadic thunderstorm include Hitt,
Franklin Corners, Carroll County Fairgrounds, Penrose, Round Grove,
Malvern, Ustick, White Pigeon, Morrison-Rockwood State Park and
Whiteside County Fairgrounds.

This includes Interstate 88 between mile markers 20 and 27.
 
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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4166 9006 4178 9016 4214 8969 4192 8969
      4192 8963 4189 8963
TIME...MOT...LOC 0501Z 235DEG 51KT 4178 9001 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

MCCLURE

086 
WWUS53 KDVN 070511
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1111 PM CST MON MAR 6 2017

ILC015-195-070545-
/O.CON.KDVN.TO.W.0017.000000T0000Z-170307T0545Z/
Whiteside IL-Carroll IL-
1111 PM CST MON MAR 6 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CST FOR
NORTHWESTERN WHITESIDE AND SOUTHEASTERN CARROLL COUNTIES...
    
At 1111 PM CST, a severe thunderstorm capable of producing a tornado
was located near Coleta, or 7 miles northeast of Morrison, moving
northeast at 55 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...
  Coleta around 1115 PM CST. 
  Milledgeville around 1120 PM CST. 

Other locations impacted by this tornadic thunderstorm include Hitt,
Franklin Corners, Carroll County Fairgrounds, Penrose, Round Grove,
Malvern, Ustick, White Pigeon, Morrison-Rockwood State Park and
Whiteside County Fairgrounds.

This includes Interstate 88 between mile markers 20 and 27.
 
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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4166 9006 4178 9016 4214 8969 4192 8969
      4192 8963 4189 8963
TIME...MOT...LOC 0511Z 226DEG 48KT 4189 8987 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

MCCLURE

900 
WWUS53 KDVN 070515
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1115 PM CST MON MAR 6 2017

ILC015-195-070545-
/O.CON.KDVN.TO.W.0017.000000T0000Z-170307T0545Z/
Whiteside IL-Carroll IL-
1115 PM CST MON MAR 6 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1145 PM CST FOR
NORTHEASTERN WHITESIDE AND SOUTHEASTERN CARROLL COUNTIES...
    
At 1115 PM CST, a severe thunderstorm capable of producing a tornado
was located over Milledgeville, or 10 miles north of Sterling, moving
northeast at 60 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 tornadic thunderstorm will remain over mainly rural areas of
northeastern Whiteside and southeastern Carroll Counties, including
the following locations: Hitt, Franklin Corners, White Pigeon,
Carroll County Fairgrounds and Penrose.

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.

Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!

&&

LAT...LON 4178 8984 4195 8994 4214 8969 4192 8969
      4192 8963 4189 8963
TIME...MOT...LOC 0515Z 235DEG 52KT 4194 8976 

TORNADO...RADAR INDICATED
HAIL...1.00IN

$$

MCCLURE

575 
WWUS53 KDVN 070523
SVSDVN

Severe Weather Statement
National Weather Service Quad Cities IA/IL
1123 PM CST MON MAR 6 2017

ILC015-195-070532-
/O.CAN.KDVN.TO.W.0017.000000T0000Z-170307T0545Z/
Whiteside IL-Carroll IL-
1123 PM CST MON MAR 6 2017

...THE TORNADO WARNING FOR NORTHEASTERN WHITESIDE AND SOUTHEASTERN
CARROLL COUNTIES IS CANCELLED...
    
The tornadic thunderstorm which prompted the warning has weakened. 
Therefore the warning has been cancelled.

A tornado watch remains in effect until 400 AM CST for northwestern
Illinois.

LAT...LON 4178 8984 4195 8994 4214 8969 4192 8969
      4192 8963 4189 8963
TIME...MOT...LOC 0522Z 227DEG 52KT 4202 8965 

$$

MCCLURE

The office that day

Everything else NWS Quad Cities, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 6, 9:52 PM CST	Severe Thunderstorm Warning	DVN	Mercer, Rock Island	83 min
Mar 6, 9:56 PM CST	Severe Thunderstorm Warning	DVN	Jo Daviess	64 min
Mar 6, 10:10 PM CST	Tornado Warning	DVN	Rock Island	24 min
Mar 6, 10:13 PM CST	Severe Thunderstorm Warning	DVN	Hancock, Henderson, McDonough, Warren	77 min
Mar 6, 10:26 PM CST	Severe Thunderstorm Warning	DVN	Bureau, Henry, Rock Island, Whiteside	49 min
Mar 6, 10:39 PM CST	Severe Thunderstorm Warning	DVN	Carroll, Stephenson, Whiteside	67 min
Mar 6, 10:44 PM CST	Tornado Warning	DVN	Hancock, Henderson, McDonough, Warren	31 min
Mar 6, 10:46 PM CST	Tornado Warning	DVN	Carroll	20 min
Mar 6, 10:58 PM CST	Tornado Warning	DVN	Henry, Mercer	32 min
Mar 6, 11:13 PM CST	Severe Thunderstorm Warning	DVN	Bureau, Henry, Putnam, Whiteside	77 min
Mar 7, 12:08 AM CST	Tornado Warning	DVN	Bureau, Putnam	17 min
Mar 7, 3:32 AM CST	Red Flag Warning	DVN	Bureau, Carroll, Hancock, Henderson, Henry, Jo Daviess and 7 more	14 hr
Mar 7, 3:37 AM CST	Wind Advisory	DVN	Carroll, Jo Daviess, Stephenson	12 hr

Nearby

Tornado Warnings in Illinois, 2017 Every tornado warning in 2017 Tornadoes 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.