Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 113, NWS Tulsa, OK

May 6, 2015Creek County, Okmulgee County, Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 6, 2015, 2:41 AM CDT for Creek County, Okmulgee County, Oklahoma. It was in force for 49 min. 4 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 6, 2015, 2:41 AM CDT (07:41 UTC)
Expired
May 6, 2015, 3:30 AM CDT
In force
49 min
Issued by
NWS Tulsa, OK
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Creek County, OK, Okmulgee County, OK

The radar

The Tulsa radar (KINX), 61 km from the middle of the area, began a volume at 07:40 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

TimeReportWhereRemark
May 6, 2:50 AM CDTTSTM WND DMG4 S Bristow, OKMOST OF THE TOP OF AN OAK TREE SNAPPED OFF. TWO ADDITIONAL TREE UPROOTED. BROKEN LIMB DOWNS POWER LINE ON 281ST. 4 SOUTH ON HWY 48 AND 1 MILE EAST
May 6, 2:58 AM CDTTORNADO5 Ssw Kellyville, OKEF0 TORNADO SPLIT A COUPLE HARDWOOD TREES AND SNAPPED LARGE LIMBS FROM OTHER TREES
May 6, 3:08 AM CDTTSTM WND DMG4 Sw Kiefer, OKLARGE TREE LIMBS DOWN ON 171ST STREET SOUTH. TIME IS RADAR ESTIMATED.
May 6, 3:12 AM CDTTSTM WND DMG1 N Kiefer, OKTREE LIMBS DOWN ON 141ST STREET. TIME IS RADAR ESTIMATED.

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

The nearest sounding before it

Norman, OK (KOUN), launched 00:00Z, 7.7 hours before the alert went out and 136 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-pSkew-T log-p diagram, Norman, OK at 00:00Z on 2015-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 171 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2015-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 209 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
171 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
762 m above ground
0-6 km bulk shear
44 kt
0-1 km storm-relative helicity
209 m²/s²
0-3 km storm-relative helicity
304 m²/s²
Significant tornado parameter
0.2
Supercell composite
4.9

Open this sounding in Storm Lab

The text

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

735 
WUUS54 KTSA 060741
SVRTSA
OKC037-111-060830-
/O.NEW.KTSA.SV.W.0113.150506T0741Z-150506T0830Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
241 AM CDT WED MAY 6 2015

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CREEK COUNTY IN NORTHEAST OKLAHOMA...
  NORTHWESTERN OKMULGEE COUNTY IN NORTHEAST OKLAHOMA...

* UNTIL 330 AM CDT

* AT 240 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM BRISTOW TO 5 MILES SOUTH OF BRISTOW TO WELTY...AND
  MOVING NORTHEAST AT 40 MPH.

  HAZARD...60 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED.

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...SLICK...KELLYVILLE...
  SAPULPA...KIEFER AND MOUNDS.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 189 AND 213.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

INTENSE SQUALL LINES CAN SOMETIMES PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT
IMMEDIATELY LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A BUILDING. THIS STORM MAY CAUSE SERIOUS INJURY AND
SIGNIFICANT PROPERTY DAMAGE.

&&

LAT...LON 3608 9615 3608 9613 3600 9603 3597 9603
      3576 9608 3563 9638 3585 9644
TIME...MOT...LOC 0741Z 227DEG 36KT 3586 9640 3576 9637
          3564 9636

HAIL...<.75IN
WIND...60MPH

$$
2 follow-up statements
997 
WWUS54 KTSA 060809
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
309 AM CDT WED MAY 6 2015

OKC037-111-060830-
/O.CON.KTSA.SV.W.0113.000000T0000Z-150506T0830Z/
CREEK OK-OKMULGEE OK-
309 AM CDT WED MAY 6 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
OKMULGEE AND EAST CENTRAL CREEK COUNTIES UNTIL 330 AM CDT...

AT 307 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM SAPULPA TO KIEFER TO 5 MILES SOUTHWEST OF MOUNDS...AND
MOVING NORTHEAST AT 40 MPH.

HAZARD...60 MPH WIND GUSTS.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES.

LOCATIONS IN OR NEAR THE PATH INCLUDE...SAPULPA...KIEFER AND MOUNDS

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 204 AND 213.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

INTENSE SQUALL LINES CAN SOMETIMES PRODUCE BRIEF TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. ALTHOUGH A TORNADO IS NOT
IMMEDIATELY LIKELY...IT IS BEST TO MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A BUILDING. THIS STORM MAY CAUSE SERIOUS INJURY AND
SIGNIFICANT PROPERTY DAMAGE.

&&

LAT...LON 3608 9615 3608 9613 3600 9603 3597 9603
      3576 9608 3571 9619 3600 9623
TIME...MOT...LOC 0809Z 227DEG 36KT 3605 9615 3595 9612
          3583 9611

HAIL...<.75IN
WIND...60MPH

$$
598 
WWUS54 KTSA 060827
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
327 AM CDT WED MAY 6 2015

OKC037-111-060837-
/O.EXP.KTSA.SV.W.0113.000000T0000Z-150506T0830Z/
CREEK OK-OKMULGEE OK-
327 AM CDT WED MAY 6 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OKMULGEE AND
EASTERN CREEK COUNTIES WILL EXPIRE AT 330 AM CDT...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE
WARNED AREA.

LAT...LON 3608 9615 3608 9613 3600 9603 3597 9603
      3576 9608 3571 9619 3600 9623
TIME...MOT...LOC 0827Z 227DEG 36KT 3617 9599 3607 9596
          3595 9595

$$

The office that day

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

IssuedProductOfficeCountiesLasted
May 6, 1:49 AM CDTSpecial Weather StatementTSAPawnee41 min
May 6, 2:10 AM CDTSpecial Weather StatementTSACreek, Okfuskee35 min
May 6, 2:44 AM CDTSpecial Weather StatementTSACreek46 min
May 6, 2:57 AM CDTTornado WarningTSACreek18 min
May 6, 3:05 AM CDTSevere Thunderstorm WarningTSACreek, Okmulgee, Rogers, Tulsa, Wagoner40 min
May 6, 3:15 AM CDTSpecial Weather StatementTSAWashington45 min
May 6, 3:47 AM CDTSpecial Weather StatementTSAWagoner43 min
May 6, 3:51 AM CDTAreal Flood AdvisoryTSACreek, Okfuskee, Okmulgee84 min

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2015Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.