Alert archive / Iowa / Tornado Warnings in 2015

Tornado Warning 26, NWS Quad Cities, IA

November 11, 2015Cedar County, Jones County, Iowa

NWS Quad Cities, IA issued this tornado warning at Nov 11, 2015, 5:47 PM CST for Cedar County, Jones County, Iowa. It was in force for 14 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Nov 11, 2015, 5:47 PM CST (23:47 UTC)
Expired: Nov 11, 2015, 6:01 PM CST
In force: 14 min
Issued by: NWS Quad Cities, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Cedar County, IA, Jones County, IA

The radar

The Quad Cities radar (KDVN), 48 km from the middle of the area, began a volume at 23:50 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 11, 3:20 PM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 11.8 hours before the alert went out and 53 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1035 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 101 m²/s²
0-3 km storm-relative helicity: 238 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

176 
WFUS53 KDVN 112347
TORDVN
IAC031-105-120015-
/O.NEW.KDVN.TO.W.0026.151111T2347Z-151112T0015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
547 PM CST WED NOV 11 2015

THE NATIONAL WEATHER SERVICE IN THE QUAD CITIES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHEASTERN JONES COUNTY IN EAST CENTRAL IOWA...
  NORTHEASTERN CEDAR COUNTY IN EAST CENTRAL IOWA...

* UNTIL 615 PM CST
    
* AT 547 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR TIPTON...MOVING NORTHEAST 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...
  OXFORD JUNCTION AROUND 610 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
HALE...OXFORD MILLS...MASSILLON PARK AND CLARENCE.

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 4195 9090 4190 9090 4177 9110 4182 9118
      4203 9106
TIME...MOT...LOC 2347Z 215DEG 32KT 4183 9110 

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

$$

MM

2 follow-up statements

734 
WWUS53 KDVN 112353
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
553 PM CST WED NOV 11 2015

IAC031-105-120015-
/O.CON.KDVN.TO.W.0026.000000T0000Z-151112T0015Z/
JONES IA-CEDAR IA-
553 PM CST WED NOV 11 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 615 PM CST FOR
SOUTHEASTERN JONES AND NORTHEASTERN CEDAR COUNTIES...
    
AT 553 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED NEAR STANWOOD...MOVING NORTHEAST AT 40 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...
  OXFORD JUNCTION AROUND 605 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
HALE...OXFORD MILLS...MASSILLON PARK AND CLARENCE.

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 4195 9090 4190 9090 4182 9102 4189 9113
      4199 9109 4203 9106
TIME...MOT...LOC 2353Z 214DEG 33KT 4189 9104 

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

$$

MM

045 
WWUS53 KDVN 120001
SVSDVN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE QUAD CITIES IA IL
601 PM CST WED NOV 11 2015

IAC031-105-120011-
/O.CAN.KDVN.TO.W.0026.000000T0000Z-151112T0015Z/
JONES IA-CEDAR IA-
601 PM CST WED NOV 11 2015

...THE TORNADO WARNING FOR SOUTHEASTERN JONES AND NORTHEASTERN CEDAR
COUNTIES IS CANCELLED...
    
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...LARGE HAIL AND DAMAGING WINDS REMAIN LIKELY
AND A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CST FOR EAST CENTRAL
IOWA.

LAT...LON 4195 9090 4190 9090 4182 9102 4189 9113
      4199 9109 4203 9106
TIME...MOT...LOC 2358Z 215DEG 32KT 4195 9099 

$$

MM

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 11, 3:55 PM CST	Severe Thunderstorm Warning	DVN	Jefferson, Keokuk, Van Buren, Washington	65 min
Nov 11, 4:16 PM CST	Severe Thunderstorm Warning	DVN	Benton, Iowa	59 min
Nov 11, 4:17 PM CST	Tornado Warning	DVN	Iowa, Keokuk	43 min
Nov 11, 4:44 PM CST	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Johnson, Linn, Louisa, Washington	61 min
Nov 11, 4:52 PM CST	Severe Thunderstorm Warning	DVN	Des Moines, Henry, Jefferson, Lee, Van Buren	53 min
Nov 11, 5:07 PM CST	Tornado Warning	DVN	Johnson, Linn	18 min
Nov 11, 5:20 PM CST	Severe Thunderstorm Warning	DVN	Cedar, Clinton, Jones, Louisa, Muscatine, Scott	55 min
Nov 11, 5:28 PM CST	Severe Thunderstorm Warning	DVN	Des Moines, Lee, Louisa	62 min
Nov 11, 5:55 PM CST	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jackson, Jones	49 min

Nearby

Tornado Warnings in Iowa, 2015 Every tornado warning in 2015 Tornadoes in 2015

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.