Alert archive / Iowa / Tornado Warnings in 2015

Tornado Warning 31, NWS Des Moines, IA

November 11, 20154 counties in Iowa

NWS Des Moines, IA issued this tornado warning at Nov 11, 2015, 3:18 PM CST for 4 counties in Iowa. It was in force for 27 min. 7 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, 3:18 PM CST (21:18 UTC)
Expired: Nov 11, 2015, 3:45 PM CST
In force: 27 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

Counties Appanoose County, IA, Lucas County, IA, Monroe County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 106 km from the middle of the area, began a volume at 21:19 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, 3:19 PM CST	TSTM WND DMG	6 N Promise City, IA	DAMAGE TO MORTON BUILDING, POSSIBLY TORNADO DAMAGE.
Nov 11, 3:27 PM CST	TORNADO	6 S Melrose, IA	HOUSE SEVERELY DAMAGED IF NOT DESTROYED. ADDRESS WAS NOT KNOWN AT THIS TIME BUT WAS WEST OF ICONIUM ON NORTH SIDE OF RATHBUN LAKE. TIME ESTIMATED FROM RADAR.
Nov 11, 3:27 PM CST	TORNADO	6 S Melrose, IA	HOUSE SEVERELY DAMAGED IF NOT DESTROYED. ADDRESS WAS NOT KNOWN AT THIS TIME BUT WAS WEST OF ICONIUM ON NORTH SIDE OF RATHBUN LAKE. TIME ESTIMATED FROM RADAR.
Nov 11, 3:29 PM CST	TORNADO	5 Sse Melrose, IA	HOUSE SEVERELY DAMAGED OR DESTROYED IN SOUTHERN MONROE COUNTY SOUTHEAST OF MELROSE. EXACT ADDRESS WAS UNKNOWN WITH LOCATION AND TIME OF REPORT ESTIMATED.
Nov 11, 3:44 PM CST	TSTM WND GST 60	4 Ssw Albia, IA
Nov 11, 3:44 PM CST	TSTM WND GST 60	Albia, IA	WINDS LASTED FOR 3 MIN.
Nov 11, 3:50 PM CST	TSTM WND DMG	6 W Eddyville, IA	POWER POLES AND LINES DOWNED.

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, 9.3 hours before the alert went out and 219 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.

245 
WFUS53 KDMX 112118
TORDMX
IAC007-117-135-185-112145-
/O.NEW.KDMX.TO.W.0031.151111T2118Z-151111T2145Z/

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

THE NATIONAL WEATHER SERVICE IN DES MOINES  HAS ISSUED A

* TORNADO WARNING FOR...
  MONROE COUNTY IN SOUTH CENTRAL IOWA...
  NORTHEASTERN WAYNE COUNTY IN SOUTH CENTRAL IOWA...
  SOUTHEASTERN LUCAS COUNTY IN SOUTH CENTRAL IOWA...
  NORTHWESTERN APPANOOSE COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 345 PM CST
    
* AT 318 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED 7 MILES WEST OF RATHBUN LAKE...OR 11 MILES
  NORTHEAST 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.
  ALBIA AROUND 345 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
RUSSELL...LOVILIA...MELROSE AND HONEY CREEK STATE PARK.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4071 9311 4089 9326 4116 9310 4116 9264
      4114 9264
TIME...MOT...LOC 2118Z 220DEG 41KT 4082 9312 

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

$$

MF

1 follow-up statement

966 
WWUS53 KDMX 112135
SVSDMX

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

IAC185-112145-
/O.CAN.KDMX.TO.W.0031.000000T0000Z-151111T2145Z/
WAYNE IA-
335 PM CST WED NOV 11 2015

...THE TORNADO WARNING FOR NORTHEASTERN WAYNE COUNTY IS CANCELLED...
    
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT
OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 PM CST FOR SOUTHEASTERN
IOWA.

LAT...LON 4083 9302 4096 9307 4116 9310 4116 9264
      4114 9264
TIME...MOT...LOC 2135Z 220DEG 41KT 4097 9295 

$$

IAC007-117-135-112145-
/O.CON.KDMX.TO.W.0031.000000T0000Z-151111T2145Z/
MONROE IA-LUCAS IA-APPANOOSE IA-
335 PM CST WED NOV 11 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 345 PM CST FOR MONROE...
NORTHEASTERN LUCAS AND NORTHWESTERN APPANOOSE COUNTIES...
    
AT 335 PM CST...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 8 MILES NORTH OF RATHBUN LAKE...OR 8 MILES SOUTHWEST OF
ALBIA...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...
  ALBIA AROUND 345 PM CST.

OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
LOVILIA AND MELROSE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 4083 9302 4096 9307 4116 9310 4116 9264
      4114 9264
TIME...MOT...LOC 2135Z 220DEG 41KT 4097 9295 

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, 2:44 PM CST	Tornado Warning	DMX	Wayne	46 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, 3:27 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.