Alert archive / Iowa / Tornado Warnings in 2013

Tornado Warning 3, NWS Des Moines, IA

May 19, 2013Dallas County, Guthrie County, Madison County, Iowa

NWS Des Moines, IA issued this tornado warning at May 19, 2013, 6:27 PM CDT for Dallas County, Guthrie County, Madison County, Iowa. It was in force for 33 min. 18 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: May 19, 2013, 6:27 PM CDT (23:27 UTC)
Expired: May 19, 2013, 7:00 PM CDT
In force: 33 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.25 in

Counties Dallas County, IA, Guthrie County, IA, Madison County, IA

The radar

The Des Moines radar (KDMX), 43 km from the middle of the area, began a volume at 23:29 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
May 19, 6:30 PM CDT	TSTM WND DMG	1 W Earlham, IA	TREES AND POWERLINES DOWN WEST OF EARLHAM. 2 TO 3 POLLS SNAPPED. SHED BLOWN OVER WITH ABOUT 30 SMALL PIECES OF ROOF SPREAD ACROSS FIELD. TIME ESTIMATED BY RADAR
May 19, 6:30 PM CDT	TSTM WND DMG	Earlham, IA	TRAILER PARK SOUTHWEST SIDE OF TOWN. ONE UNIT WITH ROOF MISSING. 6-8 UNITS DAMAGED. MULTIPLE TREE LIMBS DOWN AND ON ROOFS.
May 19, 6:30 PM CDT	TSTM WND DMG	Wsw Earlham, IA	TRAILER PARK WEST TO SOUTHWEST PART OF EARLHAM WITH 6 TO 8 UNITS DAMAGED AND ONE UNIT ROOF MISSING. MULTIPLE TREES DOWN THROUGHOUT TOWN. TIME ESTIMATED BY RADAR.
May 19, 6:30 PM CDT	TORNADO	2 W Earlham, IA	CONFIRMED TORNADO ON GROUND WEST OF EARLHAM
May 19, 6:32 PM CDT	TSTM WND DMG	Redfield, IA	SEVERAL 6 TO 8 INCH DIAMETER TREE LIMBS DOWN NEAR THE HIGH SCHOOL. TIME ESTIMATED BY RADAR
May 19, 6:38 PM CDT	TSTM WND DMG	1 W Earlham, IA	SEMI BLOWN OVER
May 19, 6:38 PM CDT	TSTM WND GST 60	Adel, IA	PEA TO SMALL MARBLE SIZE HAIL
May 19, 6:40 PM CDT	HAIL 1	Adel, IA	QUARTER SIZED HAIL, ZERO VISIBILITY AND STRONG WIND TAKING DOWN NUMEROUS TREE LIMBS.
May 19, 6:41 PM CDT	TORNADO	2 S Adel, IA	LOOKING NORTHWEST OFF OF R22
May 19, 6:43 PM CDT	TSTM WND DMG	1 S Dallas Center, IA	HOUSE LOST ABOUT THREE-QUARTERS OF ITS ROOF ON COUNTY HIGHWAY R22 JUST SOUTH OF HIGHWAY 44
May 19, 6:43 PM CDT	TSTM WND DMG	4 Ese Dallas Center, IA	ROOF AND STRUCTURAL DAMAGE TO BUILDING. POSSIBLE TORNADO UNCOMFIRMED AT THIS TIME. TIME ESTIMATED.
May 19, 6:43 PM CDT	HAIL 1.25	Adel, IA
May 19, 6:48 PM CDT	TSTM WND DMG	3 E Dallas Center, IA	18 INCH DIAMETER TREE LIMBS DOWN ON HIGHWAY 44 AND ASHTON EAST OF DALLAS CENTER
May 19, 6:48 PM CDT	TSTM WND DMG	5 Nw Grimes, IA	NEW MACHINE SHED WITH OVER HALF OF ROOF BLOWN OFF
May 19, 6:52 PM CDT	TSTM WND DMG	3 Nw Grimes, IA	12 INCH DIAMETER TREE LIMBS DOWN
May 19, 6:53 PM CDT	TSTM WND DMG	Earlham, IA	ROOF BLOWN OFF HOUSE
May 19, 6:55 PM CDT	HAIL 1.75	4 Wnw Grimes, IA	DELAYED REPORT
May 19, 6:57 PM CDT	TSTM WND DMG	Granger, IA	POWER LINES AND 18 INCH DIAMETER TREES DOWN

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
May 19, 2:59 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 11.5 hours before the alert went out and 186 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: 1125 m above ground
0-6 km bulk shear: 33 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 80 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.

230 
WFUS53 KDMX 192327
TORDMX
IAC049-077-121-200000-
/O.NEW.KDMX.TO.W.0003.130519T2327Z-130520T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
627 PM CDT SUN MAY 19 2013

THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN DALLAS COUNTY IN CENTRAL IOWA...
  SOUTHEASTERN GUTHRIE COUNTY IN WEST CENTRAL IOWA...
  NORTHWESTERN MADISON COUNTY IN SOUTH CENTRAL IOWA...

* UNTIL 700 PM CDT

* AT 624 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR EARLHAM...AND MOVING NORTHEAST AT 45 MPH.

  HAZARD...DEVELOPING TORNADO AND HALF DOLLAR SIZE HAIL.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
           SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
           OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
           EXTENSIVE TREE DAMAGE IS LIKELY.

* LOCATIONS IMPACTED INCLUDE...
  DE SOTO...ADEL...DALLAS CENTER...WAUKEE...REDFIELD...VAN METER AND
  GRANGER.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 97 AND 121.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4143 9424 4150 9424 4150 9431 4153 9434
      4183 9382 4152 9380 4139 9420
TIME...MOT...LOC 2327Z 234DEG 38KT 4152 9416

TORNADO...RADAR INDICATED
HAIL...1.25IN

$$

DONAVON

2 follow-up statements

677 
WWUS53 KDMX 192332
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
632 PM CDT SUN MAY 19 2013

IAC049-077-121-200000-
/O.CON.KDMX.TO.W.0003.000000T0000Z-130520T0000Z/
MADISON IA-GUTHRIE IA-DALLAS IA-
632 PM CDT SUN MAY 19 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN DALLAS...
SOUTHEASTERN GUTHRIE AND NORTHWESTERN MADISON COUNTIES UNTIL 700 PM
CDT...

AT 629 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR EARLHAM...AND
MOVING NORTHEAST AT 55 MPH.

HAZARD...DAMAGING TORNADO AND PING PONG BALL SIZE HAIL.

SOURCE...RADAR CONFIRMED TORNADO.

IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
         SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
         OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
         EXTENSIVE TREE DAMAGE IS LIKELY.

THE TORNADO WILL BE NEAR...
  DALLAS CENTER AND WAUKEE AROUND 645 PM CDT.
  GRANGER AROUND 655 PM CDT.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 97 AND 121.

A TORNADO WAS OBSERVED AT THE INTERSECTING OF BEAR STREET AND H.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4143 9424 4150 9424 4150 9431 4153 9434
      4183 9382 4152 9380 4139 9420
TIME...MOT...LOC 2331Z 228DEG 46KT 4156 9411

TORNADO...OBSERVED
HAIL...1.50IN

$$

DONAVON

353 
WWUS53 KDMX 192347
SVSDMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
647 PM CDT SUN MAY 19 2013

IAC077-121-192357-
/O.CAN.KDMX.TO.W.0003.000000T0000Z-130520T0000Z/
MADISON IA-GUTHRIE IA-
647 PM CDT SUN MAY 19 2013

...THE TORNADO WARNING FOR SOUTHEASTERN GUTHRIE AND NORTHWESTERN
MADISON COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4168 9407 4183 9382 4153 9380 4152 9381
      4151 9384 4150 9393
TIME...MOT...LOC 2347Z 228DEG 45KT 4169 9391

$$

IAC049-200000-
/O.CON.KDMX.TO.W.0003.000000T0000Z-130520T0000Z/
DALLAS IA-
647 PM CDT SUN MAY 19 2013

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN DALLAS COUNTY
UNTIL 700 PM CDT...

AT 643 PM CDT...A CONFIRMED TORNADO WAS LOCATED NEAR DALLAS CENTER...
AND MOVING NORTHEAST AT 50 MPH.

HAZARD...DAMAGING TORNADO AND GOLF BALL SIZE HAIL.

SOURCE...RADAR CONFIRMED TORNADO.

IMPACT...MOBILE HOMES WILL BE HEAVILY DAMAGED OR DESTROYED.
         SIGNIFICANT DAMAGE TO ROOFS...WINDOWS AND VEHICLES WILL
         OCCUR. FLYING DEBRIS WILL BE DEADLY TO PEOPLE AND ANIMALS.
         EXTENSIVE TREE DAMAGE IS LIKELY.

THE TORNADO WILL BE NEAR...
  GRANGER AROUND 655 PM CDT.

THIS INCLUDES INTERSTATE 80 BETWEEN MILE MARKERS 113 AND 121.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4168 9407 4183 9382 4153 9380 4152 9381
      4151 9384 4150 9393
TIME...MOT...LOC 2347Z 228DEG 45KT 4169 9391

TORNADO...OBSERVED
HAIL...1.75IN

$$

DONAVON

The office that day

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

Issued	Product	Office	Counties	Lasted
May 19, 1:07 AM CDT	Severe Thunderstorm Warning	DMX	Adams, Taylor	23 min
May 19, 2:51 AM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Humboldt, Pocahontas, Sac, Webster	39 min
May 19, 3:04 AM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion	26 min
May 19, 3:33 AM CDT	Severe Thunderstorm Warning	DMX	Emmet, Humboldt, Kossuth, Palo Alto	42 min
May 19, 3:55 AM CDT	Severe Thunderstorm Warning	DMX	Hancock, Wright	50 min
May 19, 4:19 AM CDT	Severe Thunderstorm Warning	DMX	Kossuth, Winnebago	56 min
May 19, 3:57 PM CDT	Severe Thunderstorm Warning	DMX	Crawford	33 min
May 19, 4:34 PM CDT	Flash Flood Warning	DMX	Crawford	6 hr
May 19, 4:59 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass	46 min
May 19, 5:39 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas, Webster	51 min
May 19, 5:43 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Adams, Cass, Guthrie	47 min
May 19, 5:45 PM CDT	Tornado Warning	DMX	Calhoun, Pocahontas, Webster	45 min
May 19, 6:10 PM CDT	Flash Flood Warning	DMX	Adair, Adams, Cass	6 hr
May 19, 6:14 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Dallas, Greene, Guthrie, Madison	46 min
May 19, 6:23 PM CDT	Severe Thunderstorm Warning	DMX	Humboldt, Kossuth	52 min
May 19, 6:35 PM CDT	Severe Thunderstorm Warning	DMX	Clarke, Madison, Warren	40 min
May 19, 6:42 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk, Story	48 min
May 19, 6:49 PM CDT	Tornado Warning Tornado observed	DMX	Polk, Story	26 min

Nearby

Tornado Warnings in Iowa, 2013 Every tornado warning in 2013 Tornadoes in 2013

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.