Alert archive / Iowa / Severe Thunderstorm Warnings in 2017

Severe Thunderstorm Warning 13, NWS Des Moines, IA

March 6, 2017Kossuth County, Winnebago County, Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Mar 6, 2017, 4:47 PM CST for Kossuth County, Winnebago County, Iowa. It was in force for 33 min. 2 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: Mar 6, 2017, 4:47 PM CST (22:47 UTC)
Expired: Mar 6, 2017, 5:20 PM CST
In force: 33 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 60.0 mph

Counties Kossuth County, IA, Winnebago County, IA

The radar

The Minneapolis radar (KMPX), 161 km from the middle of the area, began a volume at 22:49 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
Mar 6, 4:55 PM CST	HAIL 1.5	3 E Rake, IA	.
Mar 6, 5:05 PM CST	HAIL 1	Buffalo Center, IA	TRAINED SPOTTER REPORTED ONGOING QUARTER SIZED HAIL.

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
Mar 6, 1:54 PM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.8 hours before the alert went out and 160 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: 622 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 401 m²/s²
0-3 km storm-relative helicity: 365 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

The text

As transmitted.

559 
WUUS53 KDMX 062247
SVRDMX
IAC109-189-062330-
/O.NEW.KDMX.SV.W.0013.170306T2247Z-170306T2330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Des Moines IA
447 PM CST MON MAR 6 2017

The National Weather Service in Des Moines  has issued a

* Severe Thunderstorm Warning for...
  Northeastern Kossuth County in north central Iowa...
  Western Winnebago County in north central Iowa...

* Until 530 PM CST.

* At 447 PM CST, a severe thunderstorm was located near Elmore, or 24
  miles southeast of Fairmont, moving northeast at 45 mph.

  HAZARD...60 mph wind gusts and quarter size hail. 

  SOURCE...Radar indicated. 

  IMPACT...Hail damage to vehicles is expected. Expect wind damage 
           to roofs, siding, and trees. 

* Locations impacted include...
  Smith Pool, Buffalo Center, Thompson, Titonka, Lakota, Rake,
  Ledyard and Scarville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

A tornado watch remains in effect until 1000 PM CST for north central
Iowa.

LAT...LON 4350 9356 4319 9407 4350 9434
TIME...MOT...LOC 2247Z 218DEG 38KT 4343 9407 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...60MPH
 
$$

MF

3 follow-up statements

400 
WWUS53 KDMX 062254
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
454 PM CST MON MAR 6 2017

IAC109-189-062330-
/O.CON.KDMX.SV.W.0013.000000T0000Z-170306T2330Z/
Kossuth IA-Winnebago IA-
454 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CST
FOR NORTHEASTERN KOSSUTH AND WESTERN WINNEBAGO COUNTIES...

At 454 PM CST, a severe thunderstorm was located 8 miles southeast of
Elmore, or 19 miles northwest of Forest City, moving northeast at 65
mph.

HAZARD...Ping pong ball size hail and 60 mph wind gusts. 

SOURCE...Radar indicated. 

IMPACT...People and animals outdoors will be injured. Expect hail 
         damage to roofs, siding, windows, and vehicles. Expect wind 
         damage to roofs, siding, and trees. 

Locations impacted include...
Buffalo Center, Thompson, Lakota, Rake and Scarville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.

&&

A tornado watch remains in effect until 1000 PM CST for north central
Iowa.

LAT...LON 4325 9396 4350 9421 4350 9356
TIME...MOT...LOC 2254Z 226DEG 57KT 4344 9394 

TORNADO...POSSIBLE
HAIL...1.50IN
WIND...60MPH
 
$$

MF

851 
WWUS53 KDMX 062310
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
510 PM CST MON MAR 6 2017

IAC109-189-062330-
/O.CON.KDMX.SV.W.0013.000000T0000Z-170306T2330Z/
Kossuth IA-Winnebago IA-
510 PM CST MON MAR 6 2017

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM CST
FOR NORTHEASTERN KOSSUTH AND WESTERN WINNEBAGO COUNTIES...

At 510 PM CST, a severe thunderstorm was located 7 miles south of
Bricelyn, or 17 miles northwest of Forest City, moving northeast at
45 mph.

HAZARD...Quarter size hail. 

SOURCE...Emergency management. At 505 pm quarter sized hail was 
         reported near Buffalo Center.

IMPACT...Damage to vehicles is expected. 

Locations impacted include...
Buffalo Center, Thompson, Lakota, Rake and Scarville. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

This storm is producing large hail. SEEK SHELTER NOW inside a sturdy
structure and stay away from windows.

&&

A tornado watch remains in effect until 1000 PM CST for north central
Iowa.

LAT...LON 4325 9396 4350 9421 4350 9356
TIME...MOT...LOC 2310Z 211DEG 37KT 4346 9386 

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...<50MPH
 
$$

MF

002 
WWUS53 KDMX 062320
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
520 PM CST MON MAR 6 2017

IAC109-189-062329-
/O.CAN.KDMX.SV.W.0013.000000T0000Z-170306T2330Z/
Kossuth IA-Winnebago IA-
520 PM CST MON MAR 6 2017

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN KOSSUTH AND
WESTERN WINNEBAGO COUNTIES IS CANCELLED...
        
The storm which prompted the warning has moved out of the area.
Therefore the warning has been cancelled.  However gusty winds are
still possible with this thunderstorm.

A tornado watch remains in effect until 1000 PM CST for north central
Iowa.

Remember, a Severe Thunderstorm Warning still remains in effect for
Winnebago and Hancock Counties.

LAT...LON 4325 9396 4350 9421 4350 9356
TIME...MOT...LOC 2318Z 218DEG 38KT 4354 9377 

$$

MF

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 6, 4:25 AM CST	Wind Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 41 more	24 hr
Mar 6, 3:28 PM CST	Fire Weather Watch	DMX	Black Hawk, Boone, Bremer, Butler, Calhoun, Carroll and 27 more	13 hr
Mar 6, 3:29 PM CST	Wind Advisory	DMX	Adair, Adams, Appanoose, Audubon, Black Hawk, Boone and 45 more	27 hr
Mar 6, 3:40 PM CST	Severe Thunderstorm Warning	DMX	Audubon, Carroll, Greene, Guthrie	50 min
Mar 6, 3:50 PM CST	Severe Thunderstorm Warning	DMX	Calhoun, Crawford, Sac	55 min
Mar 6, 4:04 PM CST	Severe Thunderstorm Warning	DMX	Emmet, Kossuth, Palo Alto, Pocahontas	41 min
Mar 6, 4:13 PM CST	Severe Thunderstorm Warning	DMX	Calhoun, Pocahontas, Webster	47 min
Mar 6, 4:13 PM CST	Tornado Warning	DMX	Emmet, Kossuth, Palo Alto	33 min
Mar 6, 4:19 PM CST	Severe Thunderstorm Warning	DMX	Calhoun, Carroll, Crawford, Sac	41 min
Mar 6, 4:29 PM CST	Severe Thunderstorm Warning	DMX	Hancock, Humboldt, Kossuth, Webster, Wright	46 min
Mar 6, 4:31 PM CST	Severe Thunderstorm Warning	DMX	Audubon, Calhoun, Carroll, Greene	44 min
Mar 6, 4:41 PM CST	Severe Thunderstorm Warning	DMX	Hamilton, Humboldt, Webster, Wright	49 min
Mar 6, 4:43 PM CST	Severe Thunderstorm Warning	DMX	Kossuth, Palo Alto	18 min
Mar 6, 4:58 PM CST	Severe Thunderstorm Warning	DMX	Hancock, Humboldt, Kossuth, Webster, Winnebago, Wright	47 min
Mar 6, 5:00 PM CST	Severe Thunderstorm Warning	DMX	Calhoun, Humboldt, Kossuth, Pocahontas, Webster	45 min
Mar 6, 5:07 PM CST	Severe Thunderstorm Warning	DMX	Adair, Audubon, Cass, Greene, Guthrie	68 min
Mar 6, 5:10 PM CST	Severe Thunderstorm Warning	DMX	Boone, Calhoun, Greene, Webster	50 min
Mar 6, 5:29 PM CST	Tornado Warning	DMX	Hamilton, Webster	31 min
Mar 6, 5:37 PM CST	Severe Thunderstorm Warning	DMX	Franklin, Hamilton, Hardin, Humboldt, Webster, Wright	38 min
Mar 6, 5:53 PM CST	Severe Thunderstorm Warning	DMX	Adams, Cass, Ringgold, Taylor, Union	52 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2017 Every severe thunderstorm warning 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.