Alert archive / Iowa / Tornado Warnings in 2019

Tornado Warning 2, NWS Des Moines, IA

May 29, 2019Pocahontas County, Iowa

NWS Des Moines, IA issued this tornado warning at May 29, 2019, 4:46 PM CDT for Pocahontas County, Iowa. It was in force for 14 min. 3 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 29, 2019, 4:46 PM CDT (21:46 UTC)
Expired
May 29, 2019, 5:00 PM CDT
In force
14 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 21:50 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

TimeReportWhereRemark
May 29, 4:49 PM CDTTORNADO2 Nnw Pocahontas, IALANDSPOUT TORNADO. REPORT FROM SOCIAL MEDIA.
May 29, 4:57 PM CDTTORNADO3 N Pocahontas, IA
May 29, 5:01 PM CDTTORNADO3 Nnw Pocahontas, IATORNADO 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, 9.8 hours before the alert went out and 220 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-pSkew-T log-p diagram, Omaha, NE at 12:00Z on 2019-05-29Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 12:00Z on 2019-05-29The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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.

351 
WFUS53 KDMX 292146
TORDMX
IAC151-292200-
/O.NEW.KDMX.TO.W.0002.190529T2146Z-190529T2200Z/

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

The National Weather Service in Des Moines  has issued a

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

* Until 500 PM CDT.
    
* At 441 PM CDT, trained weather spotters reported a funnel cloud 
  north of Pocahontas. This storm is moving north at 10 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...
  Laurens around 500 PM CDT.

Other locations impacted by this tornadic thunderstorm include
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 4277 9445 4275 9466 4272 9478 4291 9490
      4290 9445
TIME...MOT...LOC 2145Z 166DEG 7KT 4279 9470 

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

$$

Ansorge
1 follow-up statement
748 
WWUS53 KDMX 292150
SVSDMX

Severe Weather Statement
National Weather Service Des Moines IA
450 PM CDT Wed May 29 2019

IAC151-292200-
/O.CON.KDMX.TO.W.0002.000000T0000Z-190529T2200Z/
Pocahontas IA-
450 PM CDT Wed May 29 2019

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTHERN
POCAHONTAS COUNTY...
    
At 449 PM CDT, trained weather spotters confirmed a tornado 1 mile 
north of Pocahontas, moving north at 10 mph.

HAZARD...TORNADO.

SOURCE...Weather spotters confirmed tornado.

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

This tornado will be near...
  Laurens around 500 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Havelock, Plover and Rolfe.

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 4277 9445 4275 9466 4272 9478 4291 9490
      4290 9445
TIME...MOT...LOC 2149Z 166DEG 7KT 4279 9470 

TORNADO...OBSERVED
HAIL...0.00IN

$$

Ansorge

The office that day

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

IssuedProductOfficeCountiesLasted
May 28, 7:09 PM CDTFlash Flood WarningDMXRinggold, Taylor6 hr
May 28, 9:48 PM CDTRiver Flood WarningDMXAppanoose44 hr
May 28, 10:05 PM CDTSevere Thunderstorm WarningDMXAdams, Ringgold, Taylor, Union40 min
May 28, 10:56 PM CDTAreal Flood WarningDMXAppanoose, Davis, Lucas, Mahaska, Monroe, Wapello and 1 more24 hr
May 29, 4:59 PM CDTTornado WarningDMXPocahontas16 min
May 29, 5:14 PM CDTTornado WarningDMXPocahontas31 min
May 29, 5:54 PM CDTTornado WarningDMXPoweshiek25 min
May 29, 6:24 PM CDTTornado Warning Tornado observedDMXHumboldt, Pocahontas21 min

Nearby

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