Alert archive / Iowa / Tornado Warnings in 2017

Tornado Warning 14, NWS Des Moines, IA

June 28, 2017Adair County, Dallas County, Madison County, Iowa

NWS Des Moines, IA issued this tornado warning at Jun 28, 2017, 4:08 PM CDT for Adair County, Dallas County, Madison County, Iowa. It was in force for 37 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: Jun 28, 2017, 4:08 PM CDT (21:08 UTC)
Expired: Jun 28, 2017, 4:45 PM CDT
In force: 37 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Observed
Hail: 0.75 in

Counties Adair County, IA, Dallas County, IA, Madison County, IA

The radar

The Des Moines radar (KDMX), 57 km from the middle of the area, began a volume at 21:12 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
Jun 28, 4:12 PM CDT	TORNADO	3 Ssw Stuart, IA	TORNADO REPORTED.
Jun 28, 4:14 PM CDT	TORNADO	4 S Earlham, IA
Jun 28, 4:17 PM CDT	TORNADO	4 S Earlham, IA
Jun 28, 4:28 PM CDT	TORNADO	3 Sw Dexter, IA	3 MILES SOUTH OF I80, 4 MILES EAST OF P26.

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
Jun 28, 2:53 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 9.1 hours before the alert went out and 173 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: 742 J/kg
Mixed-layer CIN: -297 J/kg
Mixed-layer LCL: 831 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 721 m²/s²
0-3 km storm-relative helicity: 852 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.8

Open this sounding in Storm Lab

The text

As transmitted.

940 
WFUS53 KDMX 282108
TORDMX
IAC001-049-121-282145-
/O.NEW.KDMX.TO.W.0014.170628T2108Z-170628T2145Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
408 PM CDT WED JUN 28 2017

The National Weather Service in Des Moines  has issued a

* Tornado Warning for...
  Northwestern Madison County in south central Iowa...
  Northeastern Adair County in southwestern Iowa...
  Southern Dallas County in central Iowa...

* Until 445 PM CDT.

* At 408 PM CDT, a confirmed tornado was located 7 miles southwest of
  Stuart, or 8 miles north of Greenfield, moving east at 35 mph.

  HAZARD...Damaging tornado. 

  SOURCE...Weather spotters confirmed tornado. 

  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. 

* The tornado will be near...
  Stuart around 420 PM CDT. 
  Earlham around 435 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Dexter.

This includes Interstate 80 near mile marker 91, and between mile
markers 93 and 103.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

To report severe weather contact your nearest law enforcement agency.
They will send your report to the National Weather Service office in
Des Moines .

&&

LAT...LON 4145 9450 4151 9428 4150 9424 4152 9424
      4154 9415 4142 9408 4134 9447
TIME...MOT...LOC 2108Z 253DEG 32KT 4142 9442 

TORNADO...OBSERVED
HAIL...<.75IN

$$

REV

4 follow-up statements

402 
WWUS53 KDMX 282116
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
416 PM CDT WED JUN 28 2017

IAC001-049-121-282145-
/O.CON.KDMX.TO.W.0014.000000T0000Z-170628T2145Z/
Madison IA-Adair IA-Dallas IA-
416 PM CDT WED JUN 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
NORTHWESTERN MADISON...NORTHEASTERN ADAIR AND SOUTHERN DALLAS
COUNTIES...
    
At 415 PM CDT, a confirmed tornado was located near Stuart, or 11
miles northeast of Greenfield, moving east at 35 mph.

HAZARD...Damaging tornado and ping pong ball size hail. 

SOURCE...Weather spotters confirmed tornado. The tornado is reported 
         near 190th Street and Quebec Avenue just northeast of 
         Greenfield. 

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 tornado will be near...
  Earlham around 435 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Dexter.

This includes Interstate 80 near mile marker 91, and between mile
markers 93 and 103.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4145 9450 4151 9428 4150 9424 4152 9424
      4154 9415 4142 9408 4134 9447
TIME...MOT...LOC 2115Z 253DEG 32KT 4144 9434 

TORNADO...OBSERVED
HAIL...1.50IN

$$

REV

543 
WWUS53 KDMX 282124 CCA
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
424 PM CDT WED JUN 28 2017

IAC001-049-121-282145-
/O.COR.KDMX.TO.W.0014.000000T0000Z-170628T2145Z/
Madison IA-Adair IA-Dallas IA-
424 PM CDT WED JUN 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
NORTHWESTERN MADISON...NORTHEASTERN ADAIR AND SOUTHERN DALLAS
COUNTIES...
    
At 422 PM CDT, a confirmed tornado was located near Stuart, or 12
miles northeast of Greenfield, moving east at 30 mph.

HAZARD...Damaging tornado and ping pong ball size hail. 

SOURCE...Weather spotters confirmed tornado. The tornado is on the 
         ground near Pitzer Road and 135th Avenue 

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 tornado will be near...
  Earlham around 440 PM CDT. 

Other locations impacted by this tornadic thunderstorm include
Dexter.

This includes Interstate 80 near mile marker 91, and between mile
markers 93 and 103.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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.

If a tornado or other severe weather is spotted, report it to the
National Weather Service or your local nearest law enforcement agency
who will send your report. This act may save lives of others in the
path of dangerous weather.

&&

LAT...LON 4145 9450 4151 9428 4150 9424 4152 9424
      4154 9415 4142 9408 4134 9447
TIME...MOT...LOC 2116Z 253DEG 27KT 4144 9434 

TORNADO...OBSERVED
HAIL...1.50IN

$$

REV

876 
WWUS53 KDMX 282130
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
430 PM CDT WED JUN 28 2017

IAC001-049-121-282145-
/O.CON.KDMX.TO.W.0014.000000T0000Z-170628T2145Z/
Madison IA-Adair IA-Dallas IA-
430 PM CDT WED JUN 28 2017

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 445 PM CDT FOR
NORTHWESTERN MADISON...NORTHEASTERN ADAIR AND SOUTHERN DALLAS
COUNTIES...
    
At 430 PM CDT, a confirmed tornado was located over Earlham, or 11
miles southwest of Adel, moving east at 35 mph.

HAZARD...Damaging tornado and quarter size hail. 

SOURCE...Weather spotters confirmed tornado. 

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
northwestern Madison...northeastern Adair and southern Dallas
Counties, including the following locations: Dexter.

This includes Interstate 80 between mile markers 95 and 103.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

To repeat, a tornado is on the ground. 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 4150 9429 4151 9428 4150 9424 4152 9424
      4154 9415 4142 9408 4142 9424
TIME...MOT...LOC 2130Z 253DEG 30KT 4148 9414 

TORNADO...OBSERVED
HAIL...1.00IN

$$

Small

165 
WWUS53 KDMX 282142
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
442 PM CDT WED JUN 28 2017

IAC001-049-121-282152-
/O.EXP.KDMX.TO.W.0014.000000T0000Z-170628T2145Z/
Madison IA-Adair IA-Dallas IA-
442 PM CDT WED JUN 28 2017

...THE TORNADO WARNING FOR NORTHWESTERN MADISON...NORTHEASTERN ADAIR
AND SOUTHERN DALLAS COUNTIES WILL EXPIRE AT 445 PM CDT...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning will be allowed to expire.

A tornado watch remains in effect until 1000 PM CDT for central,
south central, southwestern and west central Iowa.

LAT...LON 4150 9429 4151 9428 4150 9424 4152 9424
      4154 9415 4142 9408 4142 9424
TIME...MOT...LOC 2142Z 253DEG 27KT 4150 9406 

$$

Small

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 28, 3:23 AM CDT	Severe Thunderstorm Warning	DMX	Boone, Dallas, Story	30 min
Jun 28, 3:41 AM CDT	Severe Thunderstorm Warning	DMX	Dallas, Polk	23 min
Jun 28, 2:23 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Humboldt, Pocahontas, Webster	52 min
Jun 28, 3:06 PM CDT	Severe Thunderstorm Warning	DMX	Calhoun, Humboldt, Pocahontas, Webster	39 min
Jun 28, 3:40 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Webster, Wright	50 min
Jun 28, 3:49 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin	41 min
Jun 28, 4:20 PM CDT	Severe Thunderstorm Warning	DMX	Adair, Madison	40 min
Jun 28, 4:22 PM CDT	Tornado Warning	DMX	Adair, Adams, Cass	23 min
Jun 28, 4:25 PM CDT	Tornado Warning	DMX	Adair, Madison	35 min
Jun 28, 4:28 PM CDT	Tornado Warning Tornado observed	DMX	Adair, Dallas, Guthrie, Madison	32 min
Jun 28, 4:33 PM CDT	Severe Thunderstorm Warning	DMX	Bremer, Butler	42 min
Jun 28, 4:46 PM CDT	Tornado Warning Tornado observed	DMX	Adair, Adams, Union	29 min
Jun 28, 4:49 PM CDT	Severe Thunderstorm Warning	DMX	Dallas, Madison, Polk, Warren	41 min
Jun 28, 4:51 PM CDT	Severe Thunderstorm Warning	DMX	Franklin, Hamilton, Hardin, Webster, Wright	39 min
Jun 28, 4:53 PM CDT	Tornado Warning	DMX	Taylor	52 min
Jun 28, 4:56 PM CDT	Tornado Warning Tornado observed	DMX	Adair, Madison	37 min
Jun 28, 5:07 PM CDT	Severe Thunderstorm Warning	DMX	Hamilton, Hardin	38 min
Jun 28, 5:11 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Polk, Story	49 min
Jun 28, 5:11 PM CDT	Tornado Warning	DMX	Adair, Madison, Union	34 min
Jun 28, 5:24 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marion, Polk, Warren	24 min
Jun 28, 5:25 PM CDT	Severe Thunderstorm Warning	DMX	Marshall, Story	35 min
Jun 28, 5:35 PM CDT	Severe Thunderstorm Warning	DMX	Grundy, Hardin	40 min
Jun 28, 5:39 PM CDT	Severe Thunderstorm Warning	DMX	Decatur, Ringgold, Taylor	66 min
Jun 28, 5:41 PM CDT	Tornado Warning	DMX	Clarke, Madison, Union	34 min
Jun 28, 5:52 PM CDT	Severe Thunderstorm Warning	DMX	Jasper, Marshall, Polk, Story	2 min
Jun 28, 5:55 PM CDT	Tornado Warning	DMX	Marion, Warren	35 min
Jun 28, 6:14 PM CDT	Tornado Warning Tornado observed	DMX	Jasper, Marion	31 min
Jun 28, 6:18 PM CDT	Tornado Warning	DMX	Warren	27 min
Jun 28, 6:29 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Union	22 min
Jun 28, 6:29 PM CDT	Severe Thunderstorm Warning	DMX	Black Hawk, Grundy, Tama	46 min
Jun 28, 6:36 PM CDT	Severe Thunderstorm Warning	DMX	Hardin	39 min
Jun 28, 6:44 PM CDT	Tornado Warning Tornado observed	DMX	Marion, Warren	31 min
Jun 28, 6:57 PM CDT	Severe Thunderstorm Warning	DMX	Butler, Franklin, Grundy, Hardin	48 min

Nearby

Tornado Warnings in Iowa, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.