Alert archive / Oklahoma / Tornado Warnings in 2015

Tornado Warning 2, NWS Norman, OK

March 25, 2015Cleveland County, Oklahoma

NWS Norman, OK issued this tornado warning at Mar 25, 2015, 6:43 PM CDT for Cleveland County, Oklahoma. It was in force for 17 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: Mar 25, 2015, 6:43 PM CDT (23:43 UTC)
Expired: Mar 25, 2015, 7:00 PM CDT
In force: 17 min
Issued by: NWS Norman, OK
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

County Cleveland County, OK

The radar

The Norman radar (KTLX), 10 km from the middle of the area, began a volume at 23:43 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
Mar 25, 2:16 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 11.7 hours before the alert went out and 9 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: 1301 J/kg
Mixed-layer CIN: -224 J/kg
Mixed-layer LCL: 889 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 324 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

Open this sounding in Storm Lab

The text

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

432 
WFUS54 KOUN 252343
TOROUN
OKC027-260000-
/O.NEW.KOUN.TO.W.0002.150325T2343Z-150326T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE NORMAN OK
643 PM CDT WED MAR 25 2015

THE NATIONAL WEATHER SERVICE IN NORMAN HAS ISSUED A

* TORNADO WARNING FOR...
  NORTH CENTRAL CLEVELAND COUNTY IN CENTRAL OKLAHOMA...

* UNTIL 700 PM CDT
    
* AT 642 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED OVER MOORE...MOVING EAST AT 40 MPH.

  HAZARD...TORNADO AND GOLF BALL SIZE HAIL. 

  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...
  STANLEY DRAPER LAKE AND WESTERN LAKE THUNDERBIRD AROUND 655 PM CDT.
  NORTHERN NORMAN AROUND 700 PM CDT.

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 3523 9728 3529 9753 3538 9753 3538 9727
TIME...MOT...LOC 2342Z 278DEG 34KT 3533 9748 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

MBS

2 follow-up statements

908 
WWUS54 KOUN 252353
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
653 PM CDT WED MAR 25 2015

OKC027-260000-
/O.CON.KOUN.TO.W.0002.000000T0000Z-150326T0000Z/
CLEVELAND OK-
653 PM CDT WED MAR 25 2015

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 700 PM CDT FOR NORTH
CENTRAL CLEVELAND COUNTY...
    
AT 652 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO
WAS LOCATED 4 MILES NORTH OF NORMAN...MOVING SOUTHEAST AT 40 MPH.

HAZARD...TORNADO AND GOLF BALL SIZE HAIL. 

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. 

LOCATIONS IMPACTED INCLUDE...
NORTHERN NORMAN AND WESTERN LAKE THUNDERBIRD. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

HEAVY RAINFALL MAY HIDE THIS TORNADO. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. TAKE COVER NOW.

&&

LAT...LON 3527 9745 3533 9741 3531 9727 3523 9728
TIME...MOT...LOC 2352Z 295DEG 36KT 3528 9738 

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

MBS

077 
WWUS54 KOUN 252357
SVSOUN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE NORMAN OK
657 PM CDT WED MAR 25 2015

OKC027-260006-
/O.EXP.KOUN.TO.W.0002.000000T0000Z-150326T0000Z/
CLEVELAND OK-
657 PM CDT WED MAR 25 2015

...THE TORNADO WARNING FOR NORTH CENTRAL CLEVELAND COUNTY WILL EXPIRE
AT 700 PM CDT...
    
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...LARGE HAIL AND DAMAGING WINDS REMAIN LIKELY
AND A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR THE AREA.

LAT...LON 3527 9745 3533 9741 3531 9727 3523 9728
TIME...MOT...LOC 2354Z 278DEG 34KT 3528 9738 

$$

MBS

The office that day

Everything else NWS Norman, OK issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 24, 9:39 PM CDT	Special Weather Statement	OUN	Atoka	21 min
Mar 25, 4:14 AM CDT	High Wind Watch	OUN	Blaine, Caddo, Canadian, Comanche, Custer, Dewey and 5 more	6 hr
Mar 25, 4:14 AM CDT	Wind Advisory	OUN	Alfalfa, Beckham, Blaine, Caddo, Canadian, Carter and 40 more	24 hr
Mar 25, 10:35 AM CDT	High Wind Warning	OUN	Beckham, Blaine, Caddo, Canadian, Comanche, Custer and 10 more	12 hr
Mar 25, 3:25 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln	35 min
Mar 25, 3:26 PM CDT	Special Weather Statement	OUN	Payne	34 min
Mar 25, 3:38 PM CDT	Severe Thunderstorm Warning	OUN	Payne	27 min
Mar 25, 4:39 PM CDT	Special Weather Statement	OUN	Payne	36 min
Mar 25, 4:43 PM CDT	Severe Thunderstorm Warning	OUN	Payne	47 min
Mar 25, 5:04 PM CDT	Special Weather Statement	OUN	Caddo	26 min
Mar 25, 5:24 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Washita	36 min
Mar 25, 5:30 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma, Payne	45 min
Mar 25, 5:33 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian	42 min
Mar 25, 5:40 PM CDT	Severe Thunderstorm Warning	OUN	Logan	40 min
Mar 25, 5:53 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian	52 min
Mar 25, 6:09 PM CDT	Severe Thunderstorm Warning	OUN	Canadian, Oklahoma	66 min
Mar 25, 6:14 PM CDT	Severe Thunderstorm Warning	OUN	Lincoln, Logan, Oklahoma, Payne	46 min
Mar 25, 6:19 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Grady	41 min
Mar 25, 6:25 PM CDT	Severe Thunderstorm Warning	OUN	Kingfisher	22 min
Mar 25, 6:32 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Oklahoma	43 min
Mar 25, 6:41 PM CDT	Tornado Warning	OUN	Canadian, Oklahoma	6 min
Mar 25, 6:54 PM CDT	Severe Thunderstorm Warning	OUN	Caddo, Canadian, Grady	51 min
Mar 25, 6:59 PM CDT	Severe Thunderstorm Warning	OUN	Cleveland, Lincoln, Oklahoma, Pottawatomie	46 min

Nearby

Tornado Warnings in Oklahoma, 2015 Every tornado warning in 2015 Tornadoes 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; radar from the NEXRAD Level II archive.