Alert archive / Iowa / Tornado Warnings in 2016

Tornado Warning 32, NWS Quad Cities, IA

October 6, 2016Scott County, Iowa; Rock Island County, Illinois

NWS Quad Cities, IA issued this tornado warning at Oct 6, 2016, 10:33 PM CDT for Scott County, Iowa; Rock Island County, Illinois. It was in force for 27 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: Oct 6, 2016, 10:33 PM CDT (03:33 UTC)
Expired: Oct 6, 2016, 11:00 PM CDT
In force: 27 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Scott County, IA, Rock Island County, IL

The radar

The Quad Cities radar (KDVN), 11 km from the middle of the area, began a volume at 03:35 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
Oct 6, 10:39 PM CDT	TSTM WND DMG	Davenport, IA	PARTIAL ROOF OFF HOME ON W 3RD STREET, POSSIBLE TORNADO DAMAGE. ESTIMATED TIME BASED OFF RADAR.
Oct 6, 10:40 PM CDT	TSTM WND DMG	2 W Bettendorf, IA	WIDESPREAD TREE DAMAGE WITH 2 TO 3 FOOT DIAMETER LIMBS DOWN AND SOME TREES SNAPPED OFF. ALSO AT LEAST 3 REPORTS OF HOLES IN ROOFS DUE TO TREES AND DAMAGE TO SHINGLES AND SIDING. DAMAGE PATH ROUGHLY FROM SPRUCE HILLS DRIVE THROUGH TANGLEFOOT LANE AND GREENBIER
Oct 6, 10:40 PM CDT	TSTM WND DMG	Bettendorf, IA	TREE DOWN ON CAR ON SOUTH HAMPTON DRIVE IN BETTENDORF. REPORT RELAYED FROM SOCIAL MEDIA.
Oct 6, 10:42 PM CDT	TSTM WND DMG	1 W Bettendorf, IA	TIME ESTIMATED - 2 INCH DIAMETER LIMBS DOWN

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Davenport, (KDVN), launched 00:00Z, 3.6 hours before the alert went out and 14 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: 1 J/kg
Mixed-layer CIN: -164 J/kg
Mixed-layer LCL: 1193 m above ground
0-6 km bulk shear: 48 kt
0-1 km storm-relative helicity: 197 m²/s²
0-3 km storm-relative helicity: 335 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

034 
WFUS53 KDVN 070333
TORDVN
ILC161-IAC163-070400-
/O.NEW.KDVN.TO.W.0032.161007T0333Z-161007T0400Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
1033 PM CDT THU OCT 6 2016

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL ROCK ISLAND COUNTY IN NORTHWESTERN ILLINOIS...
  SOUTHEASTERN SCOTT COUNTY IN EAST CENTRAL IOWA...

* UNTIL 1100 PM CDT
    
* AT 1032 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR ROCK ISLAND...MOVING NORTHEAST AT 55 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...
  MOLINE...BETTENDORF...EAST MOLINE...ELDRIDGE AND RIVERDALE AROUND 
  1045 PM CDT. 
  HAMPTON AROUND 1050 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
PANORAMA PARK...ROCK ISLAND ARSENAL...DAVENPORT MUNICIPAL AIRPORT...
ILLINIWEK FOREST PRESERVE...CAMPBELLS ISLAND...MISSISSIPPI VALLEY
FAIRGROUNDS...PLEASANT VALLEY...FISHERMANS CORNER...CREDIT ISLAND AND
WEST LAKE PARK.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 74 IN IOWA BETWEEN MILE MARKERS 1 AND 5.
 INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 294 AND 303.
 INTERSTATE 280 BETWEEN MILE MARKERS 5 AND 11.

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 4143 9070 4148 9075 4169 9050 4155 9036
TIME...MOT...LOC 0332Z 230DEG 46KT 4149 9065 

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

$$

MCCLURE

3 follow-up statements

019 
WWUS53 KDVN 070339
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
1039 PM CDT THU OCT 6 2016

ILC161-IAC163-070400-
/O.CON.KDVN.TO.W.0032.000000T0000Z-161007T0400Z/
ROCK ISLAND IL-SCOTT IA-
1039 PM CDT THU OCT 6 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR CENTRAL
ROCK ISLAND AND SOUTHEASTERN SCOTT COUNTIES...
    
AT 1039 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER DAVENPORT...MOVING NORTHEAST AT 45 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...
  RIVERDALE AROUND 1045 PM CDT. 
  BETTENDORF...EAST MOLINE AND HAMPTON AROUND 1050 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
PANORAMA PARK...ROCK ISLAND ARSENAL...ILLINIWEK FOREST PRESERVE...
CAMPBELLS ISLAND...PLEASANT VALLEY...MISSISSIPPI VALLEY FAIRGROUNDS
AND FISHERMANS CORNER.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 74 IN IOWA BETWEEN MILE MARKERS 1 AND 5.
 INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 296 AND 304.

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 4147 9059 4153 9064 4167 9048 4155 9036
TIME...MOT...LOC 0339Z 236DEG 41KT 4153 9057 

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

$$

MCCLURE

146 
WWUS53 KDVN 070346
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
1046 PM CDT THU OCT 6 2016

ILC161-070355-
/O.CAN.KDVN.TO.W.0032.000000T0000Z-161007T0400Z/
ROCK ISLAND IL-
1046 PM CDT THU OCT 6 2016

...THE TORNADO WARNING FOR CENTRAL 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.

LAT...LON 4158 9039 4152 9052 4156 9057 4167 9048
TIME...MOT...LOC 0345Z 230DEG 38KT 4157 9049 

$$

IAC163-070400-
/O.CON.KDVN.TO.W.0032.000000T0000Z-161007T0400Z/
SCOTT IA-
1046 PM CDT THU OCT 6 2016

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1100 PM CDT FOR EAST
CENTRAL SCOTT COUNTY...
    
AT 1045 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED OVER BETTENDORF...MOVING NORTHEAST AT 45 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 TORNADIC THUNDERSTORM WILL REMAIN OVER MAINLY RURAL AREAS OF
EAST CENTRAL SCOTT COUNTY...INCLUDING THE FOLLOWING LOCATIONS:
PANORAMA PARK AND PLEASANT VALLEY.

THIS INCLUDES THE FOLLOWING HIGHWAYS...
 INTERSTATE 74 IN IOWA BETWEEN MILE MARKERS 1 AND 5.
 INTERSTATE 80 IN IOWA BETWEEN MILE MARKERS 298 AND 303.

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 4158 9039 4152 9052 4156 9057 4167 9048
TIME...MOT...LOC 0345Z 230DEG 38KT 4157 9049 

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

$$

MCCLURE

904 
WWUS53 KDVN 070359
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA/IL
1059 PM CDT THU OCT 6 2016

IAC163-070409-
/O.EXP.KDVN.TO.W.0032.000000T0000Z-161007T0400Z/
SCOTT IA-
1059 PM CDT THU OCT 6 2016

...THE TORNADO WARNING FOR EAST CENTRAL SCOTT COUNTY WILL EXPIRE AT
1100 PM CDT...
        
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
THEREFORE THE WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 4158 9039 4152 9052 4156 9057 4167 9048
TIME...MOT...LOC 0359Z 230DEG 46KT 4166 9034 

$$

MCCLURE

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 6, 9:45 PM CDT	Special Weather Statement	DVN	Henry, Louisa	30 min
Oct 6, 10:08 PM CDT	Severe Thunderstorm Warning	DVN	Muscatine, Scott	52 min
Oct 6, 10:15 PM CDT	Tornado Warning	DVN	Muscatine, Scott	15 min
Oct 6, 10:55 PM CDT	Tornado Warning	DVN	Scott	35 min
Oct 6, 10:42 PM CDT	Tornado Warning	DVN	Henry, Rock Island	24 min

Nearby

Tornado Warnings in Iowa, 2016 Tornado Warnings in Illinois, 2016 Every tornado warning in 2016 Tornadoes in 2016

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.