Alert archive / Iowa / Tornado Warnings in 2012

Tornado Warning 2, NWS Omaha, NE

April 14, 2012Fremont County, Page County, Iowa

NWS Omaha, NE issued this tornado warning at Apr 14, 2012, 2:17 PM CDT for Fremont County, Page County, Iowa. It was in force for 28 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: Apr 14, 2012, 2:17 PM CDT (19:17 UTC)
Expired: Apr 14, 2012, 2:45 PM CDT
In force: 28 min
Issued by: NWS Omaha, NE
Area: Storm-based polygon

Counties Fremont County, IA, Page County, IA

The radar

The Omaha radar (KOAX), 98 km from the middle of the area, began a volume at 19:18 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 14, 12:00 PM CDT	Tornado Watch PDS	SPC	7 hr

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 7.3 hours before the alert went out and 99 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: 1847 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 2 m²/s²
0-3 km storm-relative helicity: 89 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

542 
WFUS53 KOAX 141917
TOROAX

IAC071-145-141945-
/O.NEW.KOAX.TO.W.0002.120414T1917Z-120414T1945Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
217 PM CDT SAT APR 14 2012

THE NATIONAL WEATHER SERVICE IN OMAHA HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHWESTERN PAGE COUNTY IN SOUTHWESTERN IOWA...
  NORTHEASTERN FREMONT COUNTY IN SOUTHWESTERN IOWA...

* UNTIL 245 PM CDT

* AT 213 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
  CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 
  NEAR FARRAGUT...OR 25 MILES NORTH OF TARKIO...AND MOVING NORTHEAST 
  AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ESSEX.

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 IN A MOBILE 
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND 
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4077 9549 4081 9551 4087 9539 4091 9533
      4090 9525 4085 9521
TIME...MOT...LOC 1913Z 237DEG 26KT 4080 9546 

$$

BOUSTEAD

3 follow-up statements

594 
WWUS53 KOAX 141923
SVSOAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
223 PM CDT SAT APR 14 2012

IAC071-145-141945-
/O.CON.KOAX.TO.W.0002.000000T0000Z-120414T1945Z/
PAGE IA-FREMONT IA-
223 PM CDT SAT APR 14 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR 
NORTHWESTERN PAGE AND NORTHEASTERN FREMONT COUNTIES...

AT 218 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 
NEAR SHENANDOAH...OR 26 MILES NORTH OF TARKIO...MOVING NORTHEAST 
AT 25 MPH. 

LOCATIONS IMPACTED INCLUDE...
ESSEX.

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 IN A MOBILE 
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND 
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4085 9521 4077 9549 4081 9551 4087 9539
      4090 9534 4090 9525
TIME...MOT...LOC 1918Z 245DEG 22KT 4082 9543 

$$

BOUSTEAD

625 
WWUS53 KOAX 141931
SVSOAX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE OMAHA/VALLEY NEBRASKA
231 PM CDT SAT APR 14 2012

IAC071-141955-
/O.CAN.KOAX.TO.W.0002.000000T0000Z-120414T1945Z/
FREMONT IA-
231 PM CDT SAT APR 14 2012

...THE TORNADO WARNING FOR NORTHEASTERN FREMONT COUNTY IS 
CANCELLED...

THE TORNADIC THUNDERSTORM WHICH PROMPTED THE WARNING HAS 
MOVED OUT OF THE WARNED AREA THEREFORE THE WARNING HAS BEEN 
CANCELLED. 

LAT...LON 4085 9521 4080 9538 4082 9539 4087 9539
      4090 9534 4090 9525
TIME...MOT...LOC 1930Z 237DEG 26KT 4086 9534 

$$

IAC145-141945-
/O.CON.KOAX.TO.W.0002.000000T0000Z-120414T1945Z/
PAGE IA-
231 PM CDT SAT APR 14 2012

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 245 PM CDT FOR 
NORTHWESTERN PAGE COUNTY...

AT 227 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 
NEAR ESSEX...OR 28 MILES NORTH OF TARKIO...MOVING NORTHEAST AT 30 
MPH. 

LOCATIONS IMPACTED INCLUDE...
ESSEX.

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 IN A MOBILE 
HOME OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND 
PROTECT YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 4085 9521 4080 9538 4082 9539 4087 9539
      4090 9534 4090 9525
TIME...MOT...LOC 1927Z 237DEG 26KT 4086 9534 

$$

BOUSTEAD

699 
WWUS53 KOAX 141946
SVSOAX
SEVERE WEATHER STATEMENTNATIONAL WEATHER SERVICE OMAHA/VALLEY 
NEBRASKA246 PM CDT SAT APR 14 2012

IAC145-141955-
/O.EXP.KOAX.TO.W.0002.000000T0000Z-120414T1945Z/
PAGE IA-
246 PM CDT SAT APR 14 2012

...THE TORNADO WARNING FOR NORTHWESTERN PAGE COUNTY HAS EXPIRED...

THE STORM WHICH PROMPTED THE WARNING NO LONGER APPEARS CAPABLE OF 
PRODUCING A TORNADO. THEREFORE THE WARNING HAS BEEN ALLOWED TO 
EXPIRE. 

ADDITIONAL SEVERE THUNDERSTORM DEVELOPMENT REMAINS POSSIBLE...AND 
A TORNADO WATCH REMAINS IN EFFECT UNTIL 7 PM.  


LAT...LON 4085 9521 4080 9538 4082 9539 4087 9539
      4090 9534 4090 9525
TIME...MOT...LOC 1945Z 237DEG 26KT 4086 9534 

$$

BOUSTEAD

The office that day

Everything else NWS Omaha, NE issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 14, 1:25 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	35 min
Apr 14, 1:59 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery	31 min
Apr 14, 2:06 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	24 min
Apr 14, 2:12 PM CDT	Areal Flood Advisory	OAX	Fremont, Mills, Montgomery	3 hr
Apr 14, 2:29 PM CDT	Severe Thunderstorm Warning	OAX	Montgomery, Page	31 min
Apr 14, 2:34 PM CDT	Areal Flood Advisory	OAX	Fremont, Mills, Montgomery, Page	3 hr
Apr 14, 2:57 PM CDT	Areal Flood Advisory	OAX	Montgomery, Page	3 hr
Apr 14, 5:11 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	34 min
Apr 14, 5:13 PM CDT	Flash Flood Warning	OAX	Montgomery	2 hr
Apr 14, 5:24 PM CDT	Tornado Warning	OAX	Fremont	24 min
Apr 14, 5:33 PM CDT	Areal Flood Advisory	OAX	Fremont	96 min
Apr 14, 5:35 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	25 min
Apr 14, 5:43 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Page	32 min
Apr 14, 5:57 PM CDT	Areal Flood Advisory	OAX	Fremont, Page	2 hr
Apr 14, 5:57 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Montgomery, Pottawattamie	33 min
Apr 14, 5:59 PM CDT	Areal Flood Advisory	OAX	Page	2 hr
Apr 14, 6:02 PM CDT	Severe Thunderstorm Warning	OAX	Page	28 min
Apr 14, 6:06 PM CDT	Tornado Warning	OAX	Montgomery	14 min

Nearby

Tornado Warnings in Iowa, 2012 Every tornado warning in 2012 Tornadoes in 2012

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; radar from the NEXRAD Level II archive.