Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 39, NWS Tulsa, OK

April 13, 20144 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at Apr 13, 2014, 4:20 PM CDT for 4 counties in Oklahoma. It was in force for 40 min. 5 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: Apr 13, 2014, 4:20 PM CDT (21:20 UTC)
Expired: Apr 13, 2014, 5:00 PM CDT
In force: 40 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Creek County, OK, Osage County, OK, Pawnee County, OK, Tulsa County, OK

The radar

The Tulsa radar (KINX), 81 km from the middle of the area, began a volume at 21:22 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
Apr 13, 4:26 PM CDT	HAIL 0.75	Hallett, OK	HIGHWAY 99 TOLL PLAZA
Apr 13, 4:28 PM CDT	HAIL 0.88	Terlton, OK
Apr 13, 4:32 PM CDT	HAIL 1.75	2 Wnw Westport, OK
Apr 13, 4:40 PM CDT	HAIL 0.88	Cleveland, OK
Apr 13, 4:53 PM CDT	HAIL 0.25	Sand Springs, OK	PEA HAIL AT POGUE AIRPORT

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

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 13, 1:56 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Norman, OK (KOUN), launched 12:00Z, 9.3 hours before the alert went out and 135 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: 275 J/kg
Mixed-layer CIN: -227 J/kg
Mixed-layer LCL: 1301 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 456 m²/s²
0-3 km storm-relative helicity: 480 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

Open this sounding in Storm Lab

The text

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

461 
WUUS54 KTSA 132120
SVRTSA
OKC037-113-117-143-132200-
/O.NEW.KTSA.SV.W.0039.140413T2120Z-140413T2200Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
420 PM CDT SUN APR 13 2014

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN CREEK COUNTY IN NORTHEAST OKLAHOMA...
  SOUTHEASTERN OSAGE COUNTY IN NORTHEAST OKLAHOMA...
  PAWNEE COUNTY IN NORTHEAST OKLAHOMA...
  WEST CENTRAL TULSA COUNTY IN NORTHEAST OKLAHOMA...

* UNTIL 500 PM CDT

* AT 419 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR JENNINGS...
  AND MOVING EAST AT 40 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
           ROOFS...SIDING AND TREES.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...HALLETT...SILVER CITY...
  TERLTON...CLEVELAND...OSAGE...MANNFORD...WESTPORT...KEYSTONE STATE
  PARK...WALNUT CREEK STATE PARK...SAPULPA...SAND SPRINGS...GRAY AND
  TULSA.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 202 AND 219.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN 
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS.

&&

LAT...LON 3631 9666 3642 9600 3595 9603 3594 9662
      3615 9663 3616 9670
TIME...MOT...LOC 2120Z 254DEG 37KT 3615 9656

HAIL...1.00IN
WIND...60MPH

$$

2 follow-up statements

341 
WWUS54 KTSA 132134
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
434 PM CDT SUN APR 13 2014

OKC037-113-117-143-132200-
/O.CON.KTSA.SV.W.0039.000000T0000Z-140413T2200Z/
CREEK OK-OSAGE OK-PAWNEE OK-TULSA OK-
434 PM CDT SUN APR 13 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
TULSA...PAWNEE...SOUTHEASTERN OSAGE AND NORTHERN CREEK COUNTIES UNTIL
500 PM CDT...

AT 430 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR WESTPORT...AND
MOVING EAST AT 55 MPH.

HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE TO
         ROOFS...SIDING AND TREES.

LOCATIONS IN OR NEAR THE PATH INCLUDE...KEYSTONE STATE PARK...WALNUT
  CREEK STATE PARK...SAPULPA...SAND SPRINGS...GRAY AND TULSA

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 202 AND 218.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN 
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS.

&&

LAT...LON 3633 9652 3642 9600 3595 9603 3594 9662
      3608 9663
TIME...MOT...LOC 2134Z 254DEG 47KT 3620 9631

HAIL...1.25IN
WIND...60MPH

$$

650 
WWUS54 KTSA 132150
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
450 PM CDT SUN APR 13 2014

OKC037-113-117-143-132200-
/O.CON.KTSA.SV.W.0039.000000T0000Z-140413T2200Z/
CREEK OK-OSAGE OK-PAWNEE OK-TULSA OK-
450 PM CDT SUN APR 13 2014

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
TULSA...EXTREME EASTERN PAWNEE...SOUTHEASTERN OSAGE AND NORTHERN
CREEK COUNTIES UNTIL 500 PM CDT...

AT 446 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES NORTH OF
SAND SPRINGS...AND MOVING EAST AT 55 MPH.

HAZARD...PING PONG BALL SIZE HAIL AND 60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...PEOPLE AND ANIMALS OUTDOORS WILL BE INJURED. EXPECT HAIL
         DAMAGE TO ROOFS...SIDING...WINDOWS AND VEHICLES. EXPECT WIND
         DAMAGE TO ROOFS...SIDING AND TREES.

* THE STORM WILL OTHERWISE REMAIN OVER MAINLY RURAL AREAS OF THE
  INDICATED COUNTY..

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 202 AND 218.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN 
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS.

&&

LAT...LON 3636 9633 3642 9600 3595 9603 3594 9662
TIME...MOT...LOC 2150Z 254DEG 47KT 3626 9606

HAIL...1.50IN
WIND...60MPH

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 13, 3:29 AM CDT	Freeze Watch	TSA	Choctaw, Haskell, Latimer, McIntosh, Muskogee, Okfuskee and 3 more	13 hr
Apr 13, 3:29 AM CDT	Freeze Warning	TSA	Adair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more	54 hr
Apr 13, 2:32 PM CDT	Special Weather Statement	TSA	Pawnee	43 min
Apr 13, 2:55 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	50 min
Apr 13, 3:24 PM CDT	Special Weather Statement	TSA	Osage	36 min
Apr 13, 3:40 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	50 min
Apr 13, 4:06 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	39 min
Apr 13, 4:29 PM CDT	Special Weather Statement	TSA	Washington	31 min
Apr 13, 4:43 PM CDT	Special Weather Statement	TSA	Creek	32 min
Apr 13, 4:48 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Rogers, Washington	42 min
Apr 13, 4:56 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Rogers, Tulsa, Washington	49 min
Apr 13, 5:18 PM CDT	Special Weather Statement	TSA	Creek, Okfuskee, Okmulgee, Tulsa	27 min
Apr 13, 5:29 PM CDT	Special Weather Statement	TSA	Craig, Nowata, Ottawa	46 min
Apr 13, 5:32 PM CDT	Severe Thunderstorm Warning	TSA	Okfuskee	43 min
Apr 13, 5:40 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa, Rogers	65 min
Apr 13, 5:43 PM CDT	Severe Thunderstorm Warning	TSA	Mayes, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner	47 min
Apr 13, 6:11 PM CDT	Special Weather Statement	TSA	Okmulgee	34 min
Apr 13, 6:28 PM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, Mayes, Wagoner	47 min
Apr 13, 6:47 PM CDT	Special Weather Statement	TSA	McIntosh, Muskogee	43 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2014 Every severe thunderstorm warning in 2014

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.