Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 77, NWS Tulsa, OK

May 1, 20126 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 1, 2012, 12:59 AM CDT for 6 counties in Oklahoma. It was in force for 76 min. 8 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 1, 2012, 12:59 AM CDT (05:59 UTC)
Expired: May 1, 2012, 2:15 AM CDT
In force: 76 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon

Counties Craig County, OK, Delaware County, OK, Mayes County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK

The radar

The Tulsa radar (KINX), 81 km from the middle of the area, began a volume at 06:02 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
May 1, 1:11 AM CDT	TSTM WND DMG	Centralia, OK	LARGE TREE DOWN BLOCKING ROAD NEAR CENTRALIA. TIME ESTIMATED BY RADAR.
May 1, 1:25 AM CDT	TSTM WND DMG	1 N Welch, OK	HOME DAMAGE, WITH 1 PERSON TRAPPED. TIME ESTIMATED BY RADAR.
May 1, 1:30 AM CDT	TSTM WND DMG	Langley, OK	SEVERAL HOMES LOST SHINGLES. LARGE TREE LIMBS BROKEN AND DOWNED.
May 1, 1:30 AM CDT	TSTM WND GST 62	7 E Centralia, OK	CENTRALIA MESONET.
May 1, 1:30 AM CDT	TSTM WND GST 62	Vinita, OK	VINITA MESONET.
May 1, 1:30 AM CDT	TORNADO	1 N Welch, OK	EF1 DAMAGE WAS CONFIRMED ON THE NORTH SIDE OF WELCH. TWO HOMES WERE DAMAGED...ONE WITH THE ROOF COMPLETELY OFF THE HOME. SURVEYORS NOTED MUD AND DEBRIS CAKED ON THE EAST SIDE OF BOTH HOMES. ADDITIONAL INFORMATION WILL BE FORTHCOMING LATER TODAY WHEN THE SURVEY
May 1, 1:34 AM CDT	TSTM WND DMG	4 Wsw Miami, OK	POWER LINES AND TREES OVER A FOOT IN DIAMETER DOWN SOUTH OF DAWES.
May 1, 1:35 AM CDT	TSTM WND DMG	Miami, OK	LARGE TREE LIMBS BLOWN DOWN AND BROUGHT DOWN POWER LINES.

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 30, 7:30 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 6.0 hours before the alert went out and 110 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: 202 J/kg
Mixed-layer CIN: -103 J/kg
Mixed-layer LCL: 1176 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 83 m²/s²
0-3 km storm-relative helicity: 142 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.

281 
WUUS54 KTSA 010559
SVRTSA
OKC035-041-097-105-115-131-010715-
/O.NEW.KTSA.SV.W.0077.120501T0559Z-120501T0715Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1259 AM CDT TUE MAY 1 2012

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CRAIG COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN DELAWARE COUNTY IN NORTHEAST OKLAHOMA
  NORTHERN MAYES COUNTY IN NORTHEAST OKLAHOMA
  SOUTHEASTERN NOWATA COUNTY IN NORTHEAST OKLAHOMA
  OTTAWA COUNTY IN NORTHEAST OKLAHOMA
  NORTHEASTERN ROGERS COUNTY IN NORTHEAST OKLAHOMA

* UNTIL 215 AM CDT

* AT 1257 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM 12 MILES NORTH OF NEW ALLUWE TO 4 MILES SOUTH OF NEW
  ALLUWE TO 10 MILES WEST OF FOYIL...MOVING EAST AT 55 MPH.

  STORM HAZARDS INCLUDE...
  DAMAGING WIND GUSTS TO 70 MPH...

* SOME LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  CHELSEA...FOYIL...WHITE OAK...BIG CABIN...VINITA...ADAIR...WELCH...
  BLUEJACKET...PENSACOLA...AFTON...NARCISSA...CLEORA...KETCHUM...
  CHEROKEE STATE PARK...BERNICE...SPAVINAW STATE PARK...BERNICE STATE
  PARK...LANGLEY...MIAMI...SPAVINAW...DISNEY...COMMERCE...FAIRLAND...
  PICHER...CHLOETA...QUAPAW...WYANDOTTE...GROVE...HONEY CREEK STATE
  PARK AND JAY.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 260 AND 324.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...BE ALERT FOR RAPIDLY CHANGING WEATHER CONDITIONS.
TAKE COVER ON THE LOWEST FLOOR IN AN INTERIOR ROOM AND STAY AWAY FROM
WINDOWS.

PEOPLE OUTSIDE SHOULD MOVE TO A SAFE SHELTER...PREFERABLY INSIDE A
STRONG BUILDING. STAY AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

&&

LAT...LON 3699 9461 3637 9461 3639 9568 3655 9554
      3679 9552 3701 9500 3700 9462
TIME...MOT...LOC 0559Z 262DEG 48KT 3679 9547 3656 9548
          3639 9565

$$

4 follow-up statements

283 
WWUS54 KTSA 010634
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
134 AM CDT TUE MAY 1 2012

OKC105-010644-
/O.CAN.KTSA.SV.W.0077.000000T0000Z-120501T0715Z/
NOWATA OK-
134 AM CDT TUE MAY 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN NOWATA COUNTY IS
CANCELLED...

LAT...LON 3700 9462 3699 9461 3637 9461 3639 9548
      3677 9538 3692 9521 3701 9500
TIME...MOT...LOC 0634Z 263DEG 56KT 3700 9484 3668 9481
          3644 9508

$$

OKC035-041-097-115-131-010715-
/O.CON.KTSA.SV.W.0077.000000T0000Z-120501T0715Z/
CRAIG OK-DELAWARE OK-MAYES OK-OTTAWA OK-ROGERS OK-
134 AM CDT TUE MAY 1 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT FOR
NORTHEASTERN ROGERS...OTTAWA...NORTHERN MAYES...NORTHERN DELAWARE AND
CRAIG COUNTIES...

AT 129 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM CARDIN TO BERNICE STATE PARK TO STRANG...MOVING EAST 
AT 65 MPH. THESE STORMS HAVE A HISTORY OF PRODUCING DAMAGING WINDS 
WITH TREES DOWN IN CENTRALIA AND ALSO NEAR WELCH.

STORM HAZARDS INCLUDE...
DAMAGING WIND GUSTS TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...OTTAWA...
QUAPAW...TWIN BRIDGES STATE PARK...CHLOETA...WYANDOTTE...GROVE...
HONEY CREEK STATE PARK...PEORIA...ZENA...TIFF CITY AND JAY.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 261 AND 324.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.

THIS LINE OF STORMS HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEEK 
SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS. MOBILE HOMES AND HIGH PROFILE VEHICLES ARE ESPECIALLY 
SUSCEPTIBLE TO HIGH WINDS AND MAY BE OVERTURNED.

&&

LAT...LON 3700 9462 3699 9461 3637 9461 3639 9548
      3677 9538 3692 9521 3701 9500
TIME...MOT...LOC 0634Z 263DEG 56KT 3700 9484 3668 9481
          3644 9508

$$

088 
WWUS54 KTSA 010647
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
147 AM CDT TUE MAY 1 2012

OKC131-010657-
/O.CAN.KTSA.SV.W.0077.000000T0000Z-120501T0715Z/
ROGERS OK-
147 AM CDT TUE MAY 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ROGERS COUNTY IS
CANCELLED...

LAT...LON 3700 9462 3638 9461 3639 9542 3667 9511
      3684 9504 3701 9499
TIME...MOT...LOC 0647Z 262DEG 51KT 3700 9465 3668 9463
          3644 9490

$$

OKC035-041-097-115-010715-
/O.CON.KTSA.SV.W.0077.000000T0000Z-120501T0715Z/
CRAIG OK-DELAWARE OK-MAYES OK-OTTAWA OK-
147 AM CDT TUE MAY 1 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT FOR
OTTAWA...NORTHERN MAYES...NORTHERN DELAWARE AND SOUTHEASTERN CRAIG
COUNTIES...

AT 143 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM QUAPAW TO TIFF CITY TO CHLOETA...MOVING EAST AT 60
MPH.

STORM HAZARDS INCLUDE...
DAMAGING WIND GUSTS TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...TIFF CITY
AND JAY.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 269 AND 324.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP SUDDENLY FROM SEVERE THUNDERSTORMS. IF YOU ARE NEAR THE PATH
OF THIS STORM...YOU SHOULD BE ALERT FOR RAPIDLY CHANGING WEATHER
CONDITIONS AND BE READY TO ACT QUICKLY.

THIS LINE OF STORMS HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEEK 
SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS. MOBILE HOMES AND HIGH PROFILE VEHICLES ARE ESPECIALLY 
SUSCEPTIBLE TO HIGH WINDS AND MAY BE OVERTURNED.

&&

LAT...LON 3700 9462 3638 9461 3639 9542 3667 9511
      3684 9504 3701 9499
TIME...MOT...LOC 0647Z 262DEG 51KT 3700 9465 3668 9463
          3644 9490

$$

620 
WWUS54 KTSA 010700
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
200 AM CDT TUE MAY 1 2012

OKC035-041-097-115-010715-
/O.CON.KTSA.SV.W.0077.000000T0000Z-120501T0715Z/
CRAIG OK-DELAWARE OK-MAYES OK-OTTAWA OK-
200 AM CDT TUE MAY 1 2012

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 AM CDT FOR
EASTERN OTTAWA...NORTHEASTERN MAYES...NORTHERN DELAWARE AND
SOUTHEASTERN CRAIG COUNTIES...

AT 157 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 10 MILES NORTHEAST OF PEORIA TO 7 MILES EAST OF TIFF
CITY TO ZENA...MOVING EAST AT 60 MPH.

STORM HAZARDS INCLUDE...
DAMAGING WIND GUSTS TO 70 MPH...

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 314 AND 324.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF STORMS HAS A HISTORY OF PRODUCING DAMAGING WINDS. SEEK 
SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM 
WINDOWS. MOBILE HOMES AND HIGH PROFILE VEHICLES ARE ESPECIALLY 
SUSCEPTIBLE TO HIGH WINDS AND MAY BE OVERTURNED.

&&

LAT...LON 3700 9462 3638 9461 3640 9527 3679 9483
      3700 9475
TIME...MOT...LOC 0700Z 262DEG 51KT 3701 9447 3669 9445
          3646 9479

$$

905 
WWUS54 KTSA 010715
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
215 AM CDT TUE MAY 1 2012

OKC035-041-097-115-010724-
/O.EXP.KTSA.SV.W.0077.000000T0000Z-120501T0715Z/
CRAIG OK-DELAWARE OK-MAYES OK-OTTAWA OK-
215 AM CDT TUE MAY 1 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN OTTAWA...NORTHEASTERN
MAYES...NORTHERN DELAWARE AND SOUTHEASTERN CRAIG COUNTIES EXPIRES AT
215 AM CDT...

THE LINE OF THUNDERSTORMS HAS MOVED OUT OF THE WARNED AREA AND 
WEAKENED BELOW SEVERE LIMITS...THEREFORE THE SEVERE THUNDERSTORM 
WARNING WILL BE ALLOWED TO EXPIRE.

GUSTY WINDS TO 40 AND HEAVY RAIN WILL STILL BE POSSIBLE WITH STORMS 
ACROSS MUCH OF DELAWARE COUNTY.

LAT...LON 3700 9462 3638 9461 3640 9527 3679 9483
      3700 9475
TIME...MOT...LOC 0714Z 262DEG 51KT 3704 9422 3672 9420
          3649 9455

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 30, 7:03 PM CDT	Special Weather Statement	TSA	Nowata	27 min
Apr 30, 7:08 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	52 min
Apr 30, 7:18 PM CDT	Special Weather Statement	TSA	Muskogee	42 min
Apr 30, 7:54 PM CDT	Severe Thunderstorm Warning	TSA	Nowata	66 min
Apr 30, 8:02 PM CDT	Tornado Warning	TSA	Nowata	43 min
Apr 30, 8:21 PM CDT	Tornado Warning	TSA	Nowata	39 min
Apr 30, 8:37 PM CDT	Tornado Warning	TSA	Nowata	23 min
Apr 30, 8:53 PM CDT	Tornado Warning	TSA	Craig, Nowata	37 min
Apr 30, 8:58 PM CDT	Flash Flood Warning	TSA	Craig, Nowata	3 hr
Apr 30, 9:01 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Washington	44 min
Apr 30, 9:08 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	67 min
Apr 30, 9:29 PM CDT	Severe Thunderstorm Warning	TSA	Craig	15 min
Apr 30, 9:43 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata	62 min
Apr 30, 9:58 PM CDT	Tornado Warning	TSA	Craig	32 min
Apr 30, 10:28 PM CDT	Severe Thunderstorm Warning	TSA	Craig	62 min
Apr 30, 10:34 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	71 min
Apr 30, 11:00 PM CDT	Severe Thunderstorm Warning	TSA	Craig	60 min
Apr 30, 11:03 PM CDT	Tornado Warning	TSA	Osage, Pawnee	42 min
Apr 30, 11:11 PM CDT	Flash Flood Warning	TSA	Osage, Pawnee	4 hr
Apr 30, 11:23 PM CDT	Tornado Warning	TSA	Osage, Pawnee	37 min
Apr 30, 11:42 PM CDT	Special Weather Statement	TSA	Creek	48 min
Apr 30, 11:42 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	63 min
Apr 30, 11:51 PM CDT	Flash Flood Warning	TSA	Craig, Nowata	3 hr
Apr 30, 11:58 PM CDT	Severe Thunderstorm Warning	TSA	Craig	32 min
May 1, 12:19 AM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Tulsa, Washington	56 min
May 1, 12:26 AM CDT	Special Weather Statement	TSA	Tulsa	49 min
May 1, 12:47 AM CDT	Tornado Warning	TSA	Nowata	9 min
May 1, 12:49 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Washington	56 min
May 1, 12:56 AM CDT	Special Weather Statement	TSA	Okfuskee	49 min
May 1, 1:17 AM CDT	Severe Thunderstorm Warning	TSA	Mayes, Muskogee, Okmulgee, Rogers, Tulsa, Wagoner	58 min
May 1, 1:38 AM CDT	Special Weather Statement	TSA	Okfuskee, Okmulgee	37 min
May 1, 1:52 AM CDT	Severe Thunderstorm Warning	TSA	Cherokee, Delaware, Mayes	53 min
May 1, 1:53 AM CDT	Flash Flood Warning	TSA	Craig, Nowata, Ottawa, Rogers	5 hr
May 1, 2:10 AM CDT	Special Weather Statement	TSA	Cherokee, McIntosh, Muskogee	50 min
May 1, 2:21 AM CDT	Special Weather Statement	TSA	Pittsburg	39 min
May 1, 2:30 AM CDT	Special Weather Statement	TSA	Creek, Tulsa, Wagoner	45 min
May 1, 2:33 AM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	27 min
May 1, 2:56 AM CDT	Special Weather Statement	TSA	Adair	49 min
May 1, 3:02 AM CDT	Special Weather Statement	TSA	Haskell, Sequoyah	43 min
May 1, 3:28 AM CDT	Severe Thunderstorm Warning	TSA	Adair	47 min
May 1, 3:30 AM CDT	Special Weather Statement	TSA	Latimer, LeFlore	45 min
May 1, 6:35 AM CDT	Areal Flood Warning	TSA	Craig, Nowata, Ottawa	10 hr
May 1, 8:33 AM CDT	River Flood Warning	TSA	Ottawa	25 hr
May 1, 4:28 PM CDT	Areal Flood Warning	TSA	Craig, Nowata, Osage, Ottawa, Washington	24 hr

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2012 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.