Alert archive / Iowa / Tornado Warnings in 2019

Tornado Warning 3, NWS Des Moines, IA

May 29, 2019Pocahontas County, Iowa

NWS Des Moines, IA issued this tornado warning at May 29, 2019, 4:59 PM CDT for Pocahontas County, Iowa. It was in force for 16 min. 1 report 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 29, 2019, 4:59 PM CDT (21:59 UTC)
Expired: May 29, 2019, 5:15 PM CDT
In force: 16 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.0 in

County Pocahontas County, IA

The radar

The Des Moines radar (KDMX), 140 km from the middle of the area, began a volume at 22:02 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 29, 5:01 PM CDT	TORNADO	3 Nnw Pocahontas, IA	TORNADO HAS SINCE DISSIPATED. SPOTTER NETWORK REPORT AND VIA SOCIAL MEDIA.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 10.0 hours before the alert went out and 218 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: 4 J/kg
Mixed-layer CIN: -68 J/kg
Mixed-layer LCL: 592 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 61 m²/s²
0-3 km storm-relative helicity: 174 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

291 
WFUS53 KDMX 292159
TORDMX
IAC151-292215-
/O.NEW.KDMX.TO.W.0003.190529T2159Z-190529T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Des Moines IA
459 PM CDT Wed May 29 2019

The National Weather Service in Des Moines  has issued a

* Tornado Warning for...
  Northeastern Pocahontas County in northwestern Iowa...

* Until 515 PM CDT.

* At 459 PM CDT, a thunderstorm capable of producing a tornado was 
  located near Pocahontas, moving northwest at 5 mph.

  HAZARD...Tornado.

  SOURCE...Weather spotters reported funnel cloud at 457pm.

  IMPACT...Expect damage to mobile homes, roofs, and vehicles.

* This tornadic thunderstorm will remain over mainly rural areas of
  northeastern Pocahontas County, including the following
  locations... Havelock, Plover and Rolfe.

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.

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 4276 9453 4275 9466 4272 9476 4290 9481
      4290 9451
TIME...MOT...LOC 2159Z 157DEG 4KT 4278 9470 

TORNADO...RADAR INDICATED
HAIL...0.00IN

$$

Ansorge

The office that day

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

Issued	Product	Office	Counties	Lasted
May 28, 7:09 PM CDT	Flash Flood Warning	DMX	Ringgold, Taylor	6 hr
May 28, 9:48 PM CDT	River Flood Warning	DMX	Appanoose	44 hr
May 28, 10:05 PM CDT	Severe Thunderstorm Warning	DMX	Adams, Ringgold, Taylor, Union	40 min
May 28, 10:56 PM CDT	Areal Flood Warning	DMX	Appanoose, Davis, Lucas, Mahaska, Monroe, Wapello and 1 more	24 hr
May 29, 4:46 PM CDT	Tornado Warning	DMX	Pocahontas	14 min
May 29, 5:14 PM CDT	Tornado Warning	DMX	Pocahontas	31 min
May 29, 5:54 PM CDT	Tornado Warning	DMX	Poweshiek	25 min
May 29, 6:24 PM CDT	Tornado Warning Tornado observed	DMX	Humboldt, Pocahontas	21 min

Nearby

Tornado Warnings in Iowa, 2019 Every tornado warning in 2019 Tornadoes in 2019

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.