Alert archive / Iowa / Tornado Warnings in 2015
Tornado Warning 3, NWS Des Moines, IA
NWS Des Moines, IA issued this tornado warning at May 10, 2015, 7:37 PM CDT for Pocahontas County, Iowa. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- May 10, 2015, 7:37 PM CDT (00:37 UTC)
- Expired
- May 10, 2015, 8:00 PM CDT
- In force
- 23 min
- Issued by
- NWS Des Moines, IA
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Pocahontas County, IA
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 0.6 hours before the alert went out and 201 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.
- Mixed-layer CAPE
- 22 J/kg
- Mixed-layer CIN
- -186 J/kg
- Mixed-layer LCL
- 1224 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 61 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
495
WFUS53 KDMX 110037
TORDMX
IAC151-110100-
/O.NEW.KDMX.TO.W.0003.150511T0037Z-150511T0100Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE DES MOINES IA
737 PM CDT SUN MAY 10 2015
THE NATIONAL WEATHER SERVICE IN DES MOINES HAS ISSUED A
* TORNADO WARNING FOR...
WESTERN POCAHONTAS COUNTY IN NORTHWESTERN IOWA...
* UNTIL 800 PM CDT
* AT 737 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
TORNADO WAS LOCATED 8 MILES EAST OF NEWELL...OR 11 MILES SOUTHWEST
OF POCAHONTAS...MOVING NORTH AT 55 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 755 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
HAVELOCK...FONDA AND VARINA.
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.
&&
LAT...LON 4257 9483 4257 9490 4291 9488 4290 9463
TIME...MOT...LOC 0037Z 190DEG 46KT 4264 9484
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
SKOW2 follow-up statements
827
WWUS53 KDMX 110050
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
750 PM CDT SUN MAY 10 2015
IAC151-110100-
/O.CON.KDMX.TO.W.0003.000000T0000Z-150511T0100Z/
POCAHONTAS IA-
750 PM CDT SUN MAY 10 2015
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 800 PM CDT FOR
NORTHWESTERN POCAHONTAS COUNTY...
AT 750 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 5 MILES SOUTH OF LAURENS...OR 8 MILES WEST OF
POCAHONTAS...MOVING NORTH AT 45 MPH.
HAZARD...TORNADO.
SOURCE...RADAR INDICATED ROTATION.
IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
LIKELY.
THIS DANGEROUS STORM WILL BE NEAR...
LAURENS AROUND 800 PM CDT.
OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE
HAVELOCK.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! MOVE TO A BASEMENT OR AN INTERIOR ROOM ON THE LOWEST
FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF YOU ARE OUTDOORS...IN A
MOBILE HOME...OR IN A VEHICLE...MOVE TO THE CLOSEST SUBSTANTIAL
SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4271 9476 4270 9489 4291 9488 4290 9466
TIME...MOT...LOC 0050Z 183DEG 37KT 4277 9483
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
SKOW517
WWUS53 KDMX 110059
SVSDMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE DES MOINES IA
759 PM CDT SUN MAY 10 2015
IAC151-110108-
/O.EXP.KDMX.TO.W.0003.000000T0000Z-150511T0100Z/
POCAHONTAS IA-
759 PM CDT SUN MAY 10 2015
...THE TORNADO WARNING FOR NORTHWESTERN POCAHONTAS COUNTY WILL EXPIRE
AT 800 PM CDT...
THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS WEAKENED.
THE WARNING WILL BE ALLOWED TO EXPIRE. HOWEVER SMALL HAIL AND
GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 4271 9476 4270 9489 4291 9488 4290 9466
TIME...MOT...LOC 0055Z 190DEG 46KT 4277 9483
$$
SKOWThe office that day
Everything else NWS Des Moines, IA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:10 PM CDT | Special Weather Statement | DMX | Cass | 50 min |
| May 10, 7:15 PM CDT | Tornado Warning | DMX | Calhoun, Carroll | 30 min |
| May 10, 7:43 PM CDT | Tornado Warning | DMX | Calhoun | 32 min |
| May 10, 8:02 PM CDT | Severe Thunderstorm Warning | DMX | Carroll | 28 min |
| May 10, 8:12 PM CDT | Tornado Warning | DMX | Calhoun, Pocahontas | 33 min |
| May 10, 8:18 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Carroll, Sac | 27 min |
| May 10, 8:41 PM CDT | Severe Thunderstorm Warning | DMX | Calhoun, Pocahontas | 49 min |
| May 10, 9:32 PM CDT | Severe Thunderstorm Warning | DMX | Dallas, Madison | 18 min |
| May 10, 10:09 PM CDT | Special Weather Statement | DMX | Boone | 36 min |
| May 11, 12:13 AM CDT | Special Weather Statement | DMX | Worth | 17 min |
Nearby
Tornado Warnings in Iowa, 2015Every tornado warning in 2015Tornadoes in 2015
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.