Alert archive / Iowa / Tornado Warnings in 2015

Tornado Warning 26, NWS Des Moines, IA

November 11, 2015Wayne County, Iowa

NWS Des Moines, IA issued this tornado warning at Nov 11, 2015, 2:44 PM CST for Wayne County, Iowa. It was in force for 46 min. 3 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: Nov 11, 2015, 2:44 PM CST (20:44 UTC)
Expired: Nov 11, 2015, 3:30 PM CST
In force: 46 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Wayne County, IA

The radar

The Des Moines radar (KDMX), 120 km from the middle of the area, began a volume at 20:48 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
Nov 11, 2:55 PM CST	TORNADO	5 Se Allerton, IA	DELAYED REPORT FROM NOVEMBER 11TH. STORM CHASER VIDEO SHOWS A BRIEF TORNADO TOUCHDOWN. NO DAMAGE AT THIS LOCATION. TIME ESTIMATED FROM RADAR.
Nov 11, 3:05 PM CST	TSTM WND DMG	Corydon, IA	LARGE PINE TREE SNAPPED. VIA SOCIAL MEDIA PHOTO. TIME ESTIMATED BY RADAR.
Nov 11, 3:19 PM CST	TSTM WND DMG	6 N Promise City, IA	DAMAGE TO MORTON BUILDING, POSSIBLY TORNADO DAMAGE.

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
Nov 11, 11:25 AM CST	Tornado Watch	SPC	6 hr

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 8.7 hours before the alert went out and 257 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.

222 
WFUS53 KDMX 112044
TORDMX
IAC185-112130-
/O.NEW.KDMX.TO.W.0026.151111T2044Z-151111T2130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
244 PM CST WED NOV 11 2015

THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A

* TORNADO WARNING FOR...
  WAYNE COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 330 PM CST
    
* AT 244 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 4 MILES EAST OF MERCER...OR 17 MILES SOUTH OF
  CORYDON...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...
  CORYDON AROUND 305 PM CST.
  RATHBUN LAKE AROUND 320 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
CLIO...MILLERTON...LINEVILLE...ALLERTON...SEYMOUR...PROMISE CITY AND
SOUTH LINEVILLE.

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 4064 9354 4090 9328 4090 9310 4060 9310
      4058 9311 4058 9355
TIME...MOT...LOC 2044Z 212DEG 48KT 4052 9344 

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

$$

MF

2 follow-up statements

838 
WWUS53 KDMX 112058
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
258 PM CST WED NOV 11 2015

IAC185-112130-
/O.CON.KDMX.TO.W.0026.000000T0000Z-151111T2130Z/
WAYNE IA-
258 PM CST WED NOV 11 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CST FOR WAYNE
COUNTY...
    
AT 257 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 8 MILES SOUTH OF CORYDON...MOVING NORTHEAST AT 50 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...
  CORYDON AROUND 310 PM CST.
  RATHBUN LAKE AROUND 325 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
CLIO...SEYMOUR...PROMISE CITY...MILLERTON...ALLERTON AND LINEVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 4063 9348 4090 9328 4090 9310 4060 9310
      4058 9311 4058 9352
TIME...MOT...LOC 2057Z 212DEG 45KT 4063 9333 

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

$$

MF

745 
WWUS53 KDMX 112115
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
315 PM CST WED NOV 11 2015

IAC185-112130-
/O.CON.KDMX.TO.W.0026.000000T0000Z-151111T2130Z/
WAYNE IA-
315 PM CST WED NOV 11 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 330 PM CST FOR EASTERN
WAYNE COUNTY...
    
AT 314 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 8 MILES EAST OF CORYDON...MOVING NORTHEAST AT 50 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...
  RATHBUN LAKE AROUND 325 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
SEYMOUR AND PROMISE CITY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 4063 9334 4090 9328 4090 9310 4060 9310
      4058 9311 4058 9336
TIME...MOT...LOC 2114Z 220DEG 42KT 4078 9315 

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

$$

MF

The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Nov 11, 1:07 PM CST	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Sac	23 min
Nov 11, 1:48 PM CST	Severe Thunderstorm Warning	DMX	Cass	30 min
Nov 11, 1:51 PM CST	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas	39 min
Nov 11, 2:01 PM CST	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass	44 min
Nov 11, 2:10 PM CST	Severe Thunderstorm Warning	DMX	Ringgold, Taylor, Union	35 min
Nov 11, 2:12 PM CST	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Guthrie	48 min
Nov 11, 2:13 PM CST	Special Weather Statement	DMX	Adair, Boone, Clarke, Dallas, Decatur, Guthrie and 10 more	92 min
Nov 11, 2:23 PM CST	Severe Thunderstorm Warning	DMX	Clarke, Decatur, Ringgold, Union	37 min
Nov 11, 2:28 PM CST	Severe Thunderstorm Warning	DMX	Carroll, Crawford	47 min
Nov 11, 2:30 PM CST	Severe Thunderstorm Warning	DMX	Adair, Adams, Clarke, Madison, Union, Warren	45 min
Nov 11, 2:31 PM CST	Tornado Warning	DMX	Carroll	29 min
Nov 11, 2:39 PM CST	Severe Thunderstorm Warning	DMX	Decatur, Wayne	36 min
Nov 11, 2:39 PM CST	Tornado Warning	DMX	Clarke, Decatur, Ringgold	21 min
Nov 11, 2:46 PM CST	Severe Thunderstorm Warning	DMX	Boone, Dallas, Greene, Guthrie, Madison	44 min
Nov 11, 2:54 PM CST	Severe Thunderstorm Warning	DMX	Calhoun, Sac, Webster	51 min
Nov 11, 2:55 PM CST	Severe Thunderstorm Warning	DMX	Clarke, Lucas, Warren, Wayne	50 min
Nov 11, 2:59 PM CST	Tornado Warning	DMX	Dallas, Madison	16 min
Nov 11, 3:00 PM CST	Tornado Warning	DMX	Greene, Guthrie	30 min
Nov 11, 3:04 PM CST	Tornado Warning Tornado observed	DMX	Madison, Warren	26 min
Nov 11, 3:07 PM CST	Severe Thunderstorm Warning	DMX	Boone, Dallas, Polk, Story, Warren	53 min
Nov 11, 3:09 PM CST	Tornado Warning	DMX	Boone, Dallas	25 min
Nov 11, 3:18 PM CST	Tornado Warning	DMX	Appanoose, Lucas, Monroe, Wayne	27 min
Nov 11, 3:27 PM CST	Severe Thunderstorm Warning	DMX	Jasper, Marion	48 min
Nov 11, 3:27 PM CST	Tornado Warning	DMX	Appanoose, Monroe, Wapello	33 min
Nov 11, 3:31 PM CST	Severe Thunderstorm Warning	DMX	Appanoose	34 min
Nov 11, 3:44 PM CST	Tornado Warning	DMX	Jasper	31 min
Nov 11, 3:47 PM CST	Severe Thunderstorm Warning	DMX	Mahaska, Monroe, Wapello	43 min
Nov 11, 3:52 PM CST	Severe Thunderstorm Warning	DMX	Hamilton, Hardin, Jasper, Marshall, Polk, Story and 1 more	53 min
Nov 11, 3:52 PM CST	Severe Thunderstorm Warning	DMX	Davis, Wapello	38 min
Nov 11, 3:56 PM CST	Tornado Warning	DMX	Jasper, Mahaska, Marion, Poweshiek	41 min
Nov 11, 4:03 PM CST	Severe Thunderstorm Warning	DMX	Jasper, Mahaska, Marion, Marshall, Poweshiek, Tama	57 min
Nov 11, 4:10 PM CST	Special Weather Statement	DMX	Black Hawk, Bremer, Butler, Grundy, Hamilton, Hardin and 6 more	65 min
Nov 11, 4:10 PM CST	Tornado Warning	DMX	Mahaska	20 min
Nov 11, 4:12 PM CST	Tornado Warning	DMX	Marshall, Tama	18 min
Nov 11, 4:23 PM CST	Tornado Warning	DMX	Mahaska, Poweshiek	37 min
Nov 11, 4:30 PM CST	Tornado Warning	DMX	Grundy, Marshall, Tama	30 min
Nov 11, 4:39 PM CST	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Tama	51 min
Nov 11, 5:02 PM CST	Tornado Warning	DMX	Black Hawk	23 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.