Alert archive / Oklahoma / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 157, NWS Tulsa, OK

May 16, 20156 counties in Oklahoma

NWS Tulsa, OK issued this severe thunderstorm warning at May 16, 2015, 11:55 PM CDT for 6 counties in Oklahoma. It was in force for 65 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 16, 2015, 11:55 PM CDT (04:55 UTC)
Expired: May 17, 2015, 1:00 AM CDT
In force: 65 min
Issued by: NWS Tulsa, OK
Area: Storm-based polygon
Tornado: Possible
Hail: 1.0 in
Wind: 70.0 mph

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), 76 km from the middle of the area, began a volume at 04:56 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 17, 12:32 AM CDT	TORNADO 1	2 Wnw Bernice, OK	A TORNADO SNAPPED AND UPROOTED NUMEROUS TREES
May 17, 12:36 AM CDT	HAIL 1.75	3 N Vinita, OK
May 17, 12:40 AM CDT	TSTM WND DMG	4 Sse Fairland, OK	POWER LINES DOWN AND HOMES DAMAGED NEAR 590 AND 220 ROAD FROM PROBABLE TORNADO.
May 17, 12:40 AM CDT	TORNADO 1	3 Sse Fairland, OK	A TORNADO DESTROYED A MOBILE HOME...DESTROYED A WORKSHOP...AND SNAPPED OR UPROOTED NUMEROUS TREES.

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

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 2 storm reports to this severe thunderstorm warning; the first came 41 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 16, 8:42 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 4.9 hours before the alert went out and 114 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: 1727 J/kg
Mixed-layer CIN: -4 J/kg
Mixed-layer LCL: 1056 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 218 m²/s²
Significant tornado parameter: 1.4
Supercell composite: 11.8

Open this sounding in Storm Lab

The text

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

047 
WUUS54 KTSA 170455
SVRTSA
OKC035-041-097-105-115-131-170600-
/O.NEW.KTSA.SV.W.0157.150517T0455Z-150517T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TULSA OK
1155 PM CDT SAT MAY 16 2015

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A

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

* UNTIL 100 AM CDT

* AT 1154 PM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
  EXTENDING FROM CHETOPA TO CHELSEA...AND MOVING NORTHEAST AT 70 MPH.

  HAZARD...70 MPH WIND GUSTS AND QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT CONSIDERABLE
           TREE DAMAGE. WIND DAMAGE IS ALSO LIKELY TO MOBILE HOMES...
           ROOFS AND OUTBUILDINGS.

* LOCATIONS IN OR NEAR THE PATH INCLUDE...BIG CABIN...WHITE OAK...
  PYRAMID CORNERS...WELCH...VINITA...BLUEJACKET...BERNICE...BERNICE
  STATE PARK...AFTON...NARCISSA...FAIRLAND...COMMERCE...CARDIN...TWIN
  BRIDGES STATE PARK...MIAMI...PICHER...OTTAWA AND QUAPAW.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 268 AND 320.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMAIN ALERT FOR A POSSIBLE TORNADO! TORNADOES CAN DEVELOP QUICKLY
FROM SEVERE THUNDERSTORMS. IF YOU SPOT A TORNADO GO AT ONCE INTO THE
BASEMENT OR SMALL CENTRAL ROOM IN A STURDY STRUCTURE.

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 3664 9478 3638 9563 3701 9548 3700 9466
TIME...MOT...LOC 0455Z 226DEG 60KT 3703 9512 3649 9540

TORNADO...POSSIBLE
HAIL...1.00IN
WIND...70MPH

$$

4 follow-up statements

425 
WWUS54 KTSA 170530
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1230 AM CDT SUN MAY 17 2015

OKC097-105-131-170541-
/O.CAN.KTSA.SV.W.0157.000000T0000Z-150517T0600Z/
MAYES OK-NOWATA OK-ROGERS OK-
1230 AM CDT SUN MAY 17 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN ROGERS...EASTERN
NOWATA AND NORTHWESTERN MAYES COUNTIES IS CANCELLED...

LAT...LON 3700 9466 3664 9479 3651 9521 3652 9533
      3700 9533
TIME...MOT...LOC 0531Z 213DEG 57KT 3704 9495 3672 9510
          3664 9496

$$

OKC035-041-115-170600-
/O.CON.KTSA.SV.W.0157.000000T0000Z-150517T0600Z/
CRAIG OK-DELAWARE OK-OTTAWA OK-
1230 AM CDT SUN MAY 17 2015

...SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT FOR
OTTAWA...NORTHWESTERN DELAWARE AND CRAIG COUNTIES...

AT 1229 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 7 MILES NORTHWEST OF CARDIN TO VINITA TO BERNICE...
MOVING NORTHEAST AT 65 MPH.

STORM HAZARDS INCLUDE...
QUARTER SIZE HAIL...
DAMAGING WIND GUSTS TO 70 MPH...

SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...BERNICE
STATE PARK...BERNICE...AFTON...NARCISSA...FAIRLAND...TWIN BRIDGES
STATE PARK...MIAMI...OTTAWA...COMMERCE...CARDIN...PICHER AND QUAPAW.

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 273 AND 320.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH IS IN EFFECT FOR THE WARNED AREA. PEOPLE OUTDOORS
SHOULD MOVE INSIDE A STURDY BUILDING. STAY AWAY FROM WINDOWS AND
DOORS UNTIL THE STORM HAS PASSED.

TORNADOES CAN DEVELOP SUDDENLY IN THESE CONDITIONS. TAKE COVER ON THE
LOWEST FLOOR IN AN INTERIOR ROOM AWAY FROM WINDOWS AND DOORS. PREPARE
TO TAKE TORNADO PRECAUTIONS ON SHORT NOTICE.

&&

LAT...LON 3700 9466 3664 9479 3651 9521 3652 9533
      3700 9533
TIME...MOT...LOC 0531Z 213DEG 57KT 3704 9495 3672 9510
          3664 9496

$$

763 
WWUS54 KTSA 170540
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1240 AM CDT SUN MAY 17 2015

OKC035-041-115-170600-
/O.CON.KTSA.SV.W.0157.000000T0000Z-150517T0600Z/
CRAIG OK-DELAWARE OK-OTTAWA OK-
1240 AM CDT SUN MAY 17 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR OTTAWA...
NORTHWESTERN DELAWARE AND EASTERN CRAIG COUNTIES UNTIL 100 AM CDT...

AT 1238 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 8 MILES NORTH OF TREECE TO BLUEJACKET TO FAIRLAND...
AND MOVING NORTHEAST AT 55 MPH.

HAZARD...70 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE
         HOMES...ROOFS AND OUTBUILDINGS.

LOCATIONS IN OR NEAR THE PATH INCLUDE...TWIN BRIDGES STATE PARK...
  MIAMI...OTTAWA...COMMERCE...CARDIN...QUAPAW AND PICHER

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 283 AND 320.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3682 9525 3700 9521 3700 9466 3664 9479
      3654 9513
TIME...MOT...LOC 0541Z 213DEG 47KT 3715 9479 3685 9499
          3674 9476

HAIL...0.75IN
WIND...70MPH

$$

482 
WWUS54 KTSA 170552
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
1252 AM CDT SUN MAY 17 2015

OKC035-041-170602-
/O.CAN.KTSA.SV.W.0157.000000T0000Z-150517T0600Z/
CRAIG OK-DELAWARE OK-
1252 AM CDT SUN MAY 17 2015

...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN DELAWARE AND
EASTERN CRAIG COUNTIES IS CANCELLED...

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

LAT...LON 3682 9498 3699 9499 3700 9466 3668 9478
      3670 9499
TIME...MOT...LOC 0552Z 213DEG 47KT 3727 9469 3697 9489
          3686 9466

$$

OKC115-170600-
/O.CON.KTSA.SV.W.0157.000000T0000Z-150517T0600Z/
OTTAWA OK-
1252 AM CDT SUN MAY 17 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR OTTAWA COUNTY
UNTIL 100 AM CDT...

AT 1249 AM CDT...SEVERE THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 12 MILES NORTH OF GALENA TO COMMERCE TO WYANDOTTE...
AND MOVING NORTHEAST AT 55 MPH.

HAZARD...70 MPH WIND GUSTS AND PENNY SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...EXPECT CONSIDERABLE TREE DAMAGE. DAMAGE IS LIKELY TO MOBILE
         HOMES...ROOFS AND OUTBUILDINGS.

LOCATIONS IN OR NEAR THE PATH INCLUDE...CARDIN...QUAPAW AND PICHER

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 294 AND 320.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 3682 9498 3699 9499 3700 9466 3668 9478
      3670 9499
TIME...MOT...LOC 0552Z 213DEG 47KT 3727 9469 3697 9489
          3686 9466

HAIL...0.75IN
WIND...70MPH

$$

417 
WWUS54 KTSA 170600
SVSTSA

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
100 AM CDT SUN MAY 17 2015

OKC115-170610-
/O.EXP.KTSA.SV.W.0157.000000T0000Z-150517T0600Z/
OTTAWA OK-
100 AM CDT SUN MAY 17 2015

...THE SEVERE THUNDERSTORM WARNING FOR OTTAWA COUNTY HAS EXPIRED...

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

ADDITIONAL SEVERE THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 3 AM.

LAT...LON 3682 9498 3699 9499 3700 9466 3668 9478
      3670 9499
TIME...MOT...LOC 0552Z 213DEG 47KT 3727 9469 3697 9489
          3686 9466

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at May 16, 9:15 PM CDT, 2 hours 40 minutes earlier.

Area forecast discussion, May 16, 9:15 PM CDT, 2 hours 40 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
915 PM CDT SAT MAY 16 2015

.DISCUSSION...
SEVERE WEATHER THREAT...INCLUDING TORNADOES...ABOUT TO RAMP UP
ACROSS EASTERN OK AND WILL CONTINUE THROUGH MUCH OF THE NIGHT AS
STORMS MOVE EAST INTO WESTERN ARKANSAS. EARLIER SUPERCELL STORMS
OVER WESTERN OK EVOLVING INTO A LARGE QLCS. ADDITIONAL DISCRETE
CELLS HAVE FORMED AHEAD OF THIS LINE ON THE EDGE OF THE CAP AND
THESE STORMS HAVE BECOME SUPERCELLULAR IN A FAVORABLY SHEARED
ENVIRONMENT. TORNADO WATCH CONTINUES FOR MUCH OF EASTERN OK UNTIL
3 AM AND SEE LITTLE REASON WHY SEVERE THREAT WILL DIMINISH MUCH
THROUGH THE NIGHT...GOING TO BE A LONG ONE.

&&

.PREV DISCUSSION... /ISSUED 646 PM CDT SAT MAY 16 2015/

AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
STRONG TO SEVERE CONVECTIVE LINE EXPECTED TO AFFECT EASTERN
OKLAHOMA TAF SITES BY LATE EVENING...PUSHING INTO NW ARKANSAS
AFTER MIDNIGHT. LIFR CONDITIONS WILL BE POSSIBLE IN THE STRONGER
STORMS WITH GUSTY WINDS/LOW VISIBILITIES/HEAVY RAIN. LOWER CLOUDS
WILL LIKELY LINGER ACROSS NORTHWEST ARKANSAS INTO SUNDAY MORNING.

PREV DISCUSSION... /ISSUED 341 PM CDT SAT MAY 16 2015/

DISCUSSION...
BROADLY ADVERTISED SEVERE WEATHER EVENT AND HEAVY RAIN
EVENT EVOLVING OVER WESTERN OKLAHOMA & TEXAS PANHANDLE
THIS AFTERNOON. SEVERE THUNDER AND HEAVY RAIN EXPECTED
DURING EVENING HOURS..INTO THE OVERNIGHT HOURS EASTERN
OKLAHOMA / NORTHWEST ARKANSAS.  FOR DETAILS SEE LATEST
HWO AND NWS TULSA DECISION SUPPORT WEB PAGE.

ENTIRE CWA WITH FLOOD WATCH TONIGHT EXCEPT PAWNEE OSAGE
COUNTIES WHERE PAST WEEKS RAINFALL LESS THAN MOST AREAS
AND 6 HOUR FFG 3+ INCHES.

BOUNDARY LIKELY TO RESIDE NEAR RED RIVER SUNDAY THROUGH
SUNDAY NIGHT AND MONDAY.  THIS KEEPS HIGHER THREAT RAIN
FOR SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS DURING
THAT TIME PERIOD. NOT A GOOD THING GIVEN RECENT FLOODS.

SEEMINGLY ENDLESS SPLIT FLOW PATTERN WITH WESTERN CANADA
RIDGE HOLDING SWAY..WHILE REVOLVING UPPER LOWS DROP INTO
SOUTHWEST U.S.  THIS KEEPS SOUTHERN PLAINS IN ABNORMALLY
MOIST / WET PATTERN...FOR ANOTHER WEEK...TEN DAYS...MORE?
GW

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   70  86  68  85 /  90  10  20  20
FSM   70  85  68  82 /  90  50  70  50
MLC   71  82  68  83 /  90  30  60  30
BVO   67  85  61  83 /  90  10  10  20
FYV   67  81  65  80 /  90  40  50  40
BYV   67  81  65  80 /  90  40  50  40
MKO   68  83  66  83 /  90  20  40  30
MIO   70  84  66  82 /  90  20  20  20
F10   68  83  66  83 /  90  10  40  20
HHW   69  82  68  82 /  80  60  70  40

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...FLASH FLOOD WATCH UNTIL 7 AM SUNDAY FOR OKZ049-OKZ053-OKZ054-
     OKZ055-OKZ056-OKZ057-OKZ058-OKZ059-OKZ060-OKZ061-OKZ062-
     OKZ063-OKZ064-OKZ065-OKZ066-OKZ067-OKZ068-OKZ069-OKZ070-
     OKZ071-OKZ072-OKZ073-OKZ074-OKZ075-OKZ076.

AR...FLASH FLOOD WATCH UNTIL 7 AM SUNDAY FOR ARZ001-ARZ002-ARZ010-
     ARZ011-ARZ019-ARZ020-ARZ029.

&&

SHORT TERM...14

Hazardous weather outlook, May 16, 9:28 PM CDT, 2 hours 27 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
928 PM CDT SAT MAY 16 2015

ARZ001-002-010-011-019-020-029-OKZ049-053>076-171015-
ADAIR OK-BENTON AR-CARROLL AR-CHEROKEE OK-CHOCTAW OK-CRAIG OK-
CRAWFORD AR-CREEK OK-DELAWARE OK-FRANKLIN AR-HASKELL OK-LATIMER OK-
LE FLORE OK-MADISON AR-MAYES OK-MCINTOSH OK-MUSKOGEE OK-NOWATA OK-
OKFUSKEE OK-OKMULGEE OK-OSAGE OK-OTTAWA OK-PAWNEE OK-PITTSBURG OK-
PUSHMATAHA OK-ROGERS OK-SEBASTIAN AR-SEQUOYAH OK-TULSA OK-WAGONER OK-
WASHINGTON OK-WASHINGTON AR-
928 PM CDT SAT MAY 16 2015

...SEVERE WEATHER AND FLASH FLOOD THREAT CONTINUES MUCH OF TONIGHT...

THIS OUTLOOK IS FOR NORTHWEST AND WEST CENTRAL ARKANSAS AS WELL AS
MUCH OF EASTERN OKLAHOMA.

.DAY ONE...TODAY AND TONIGHT.
TORNADO.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA...LIMITED THREAT OVERNIGHT WESTERN ARKANSAS.
	ONSET...ONGOING EASTERN OKLAHOMA...AFTER MIDNIGHT WESTERN ARKANSAS.

SEVERE THUNDERSTORM.
	RISK...CRITICAL.
	AREA...EASTERN OKLAHOMA AND WESTERN ARKANSAS.
	ONSET...ONGOING EASTERN OKLAHOMA...AFTER MIDNIGHT WESTERN ARKANSAS.

	AREA AT GREATEST RISK...EASTERN OKLAHOMA.

FLASH FLOOD.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND WESTERN ARKANSAS.
	ONSET...ONGOING EASTERN OKLAHOMA...AFTER MIDNIGHT WESTERN ARKANSAS.

HEAVY RAIN.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND WESTERN ARKANSAS.
	ONSET...ONGOING EASTERN OKLAHOMA...AFTER MIDNIGHT WESTERN ARKANSAS.

DISCUSSION...
SEVERE THUNDERSTORMS ARE MOVING INTO EASTERN OKLAHOMA THIS EVENING
AND WILL EVENTUALLY MOVE INTO WESTERN ARKANSAS BY MIDNIGHT.
TORNADOES...LARGE HAIL AND DAMAGING STRAIGHT LINE WINDS ARE ALL
POSSIBLE THROUGH MUCH OF TONIGHT.

DISCRETE CELLS HAVE FORMED THIS EVENING AHEAD OF A LARGE LINE OF
THUNDERSTORMS MOVING THROUGH CENTRAL OKLAHOMA. THESE STORMS WILL
BE CAPABLE OF ALL MODES OF SEVERE WEATHER THIS EVENING AS THEY
MOVE TO THE NORTHEAST. THE LARGE COMPLEX OF STORMS OVER CENTRAL
OKLAHOMA WILL ALSO CONTINUE TO MOVE EAST WITH LARGE HAIL...DAMAGING
WINDS AND ISOLATED SQUALL LINE TORNADOES. THE GREATEST RISK WILL
REMAIN OVER EASTERN OKLAHOMA...WITH RELATIVELY LOWER RISK DURING
THE OVERNIGHT OVER INTO WESTERN ARKANSAS.

LOCALLY HEAVY RAINFALL IS ALSO LIKELY WITH THE BANDS OF STORMS...
AND WILL FALL OVER AREAS THAT HAVE BEEN HIT RECENTLY BY HEAVY
RAINS AND FLOODING. THEREFORE...A FLASH FLOOD RISK EXISTS FOR ALL
OF EASTERN OKLAHOMA AND WESTERN ARKANSAS.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
ACTIVATION OF THE REGIONAL SPOTTER NETWORK EXPECTED. EVENT COORDINATORS
SHOULD KEEP A CLOSE EYE ON FORECASTS THROUGH THE EVENING AND OVERNIGHT
GIVEN THE POTENTIAL WEATHER IMPACTS ON THE MANY OUTDOOR WEEKEND
FESTIVITIES.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
SUNDAY...SEVERE THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL...HEAVY RAIN POTENTIAL.
MONDAY THROUGH FRIDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
THE CHANCE FOR SEVERE STORMS SHIFTS DOWN INTO SOUTHEAST OKLAHOMA
AND WEST CENTRAL ARKANSAS ON SUNDAY ALONG A STALLING PACIFIC
FRONT. LARGE HAIL AND DAMAGING WINDS WOULD BE THE PRIMARY THREATS.
THE FLASH FLOOD THREAT WILL CONTINUE TO GRADUALLY INCREASE
HOWEVER...AS ANOTHER ROUND OF HEAVY RAIN PRODUCING STORMS DEVELOPS
OVER THE SAME REGION AFFECTED BY TONIGHT'S STORMS...AND IS THE
SAME AREA THAT SAW HEAVY RAINS OVER THE PAST WEEK OR SO.

SEVERE POTENTIAL DROPS OFF NEXT WEEK...HOWEVER FLOODING WILL
CONTINUE TO BE A THREAT. MORE ROUNDS OF THUNDERSTORMS ARE
EXPECTED...AND THIS IS GOING TO CREATE ISSUES IN SOME SPOTS.

WWW.SRH.NOAA.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Local storm report, May 16, 11:02 PM CDT, 53 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1102 PM CDT SAT MAY 16 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1002 PM     HAIL             CASTLE                  35.47N 96.38W
05/16/2015  E2.75 INCH       OKFUSKEE           OK   PUBLIC

            RELAYED BY KOTV

&&

KAH

Local storm report, May 16, 11:08 PM CDT, 47 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1108 PM CDT SAT MAY 16 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1100 PM     TSTM WND GST     3 SW LIBERTY            35.83N 96.02W
05/16/2015  M58 MPH          OKMULGEE           OK   TRAINED SPOTTER

&&

KAH

Local storm report, May 16, 11:38 PM CDT, 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1138 PM CDT SAT MAY 16 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1128 PM     TORNADO          BROKEN ARROW            36.05N 95.79W
05/16/2015                   TULSA              OK   TRAINED SPOTTER

            REPORTED NEAR KENOSHA AND THE CREEK TURNPIKE.

&&

KAH

Local storm report, May 16, 11:43 PM CDT, 12 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1143 PM CDT SAT MAY 16 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1133 PM     TSTM WND GST     TULSA                   36.13N 95.92W
05/16/2015  M63 MPH          TULSA              OK   ASOS

            MEASURED AT TULSA INTERNATIONAL AIRPORT

&&

KAH

Local storm report, May 16, 11:47 PM CDT, 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1147 PM CDT SAT MAY 16 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1146 PM     TSTM WND GST     OWASSO                  36.27N 95.85W
05/16/2015  E65 MPH          TULSA              OK   TRAINED SPOTTER

            REPORTED NEAR 106TH STREET NORTH AND HIGHWAY 169.

&&

KAH

Local storm report, May 16, 11:49 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE TULSA OK
1149 PM CDT SAT MAY 16 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1148 PM     TSTM WND GST     2 E INOLA               36.15N 95.47W
05/16/2015  M75 MPH          ROGERS             OK   TRAINED SPOTTER

            MEASURED ON HIGHWAY 412.

&&

KAH

The office that day

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

Issued	Product	Office	Counties	Lasted
May 16, 8:55 PM CDT	Areal Flood Advisory	TSA	Creek, Osage, Pawnee	2 hr
May 16, 9:08 PM CDT	Severe Thunderstorm Warning	TSA	Osage	52 min
May 16, 9:16 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	44 min
May 16, 9:32 PM CDT	Severe Thunderstorm Warning	TSA	Creek	43 min
May 16, 9:36 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	39 min
May 16, 9:38 PM CDT	Areal Flood Advisory	TSA	Creek, Okfuskee	2 hr
May 16, 9:49 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Washington	56 min
May 16, 9:54 PM CDT	Tornado Warning	TSA	Okfuskee	36 min
May 16, 9:59 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee, Washington	46 min
May 16, 10:02 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Tulsa, Washington	43 min
May 16, 10:04 PM CDT	Tornado Warning	TSA	Osage, Pawnee	26 min
May 16, 10:04 PM CDT	Tornado Warning	TSA	Creek, Okfuskee, Okmulgee	41 min
May 16, 10:15 PM CDT	Areal Flood Advisory	TSA	Creek, Nowata, Osage, Pawnee, Rogers, Tulsa and 1 more	2 hr
May 16, 10:22 PM CDT	Tornado Warning Tornado observed	TSA	Osage, Washington	23 min
May 16, 10:29 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okfuskee	46 min
May 16, 10:35 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Rogers, Tulsa, Washington	40 min
May 16, 10:41 PM CDT	Areal Flood Advisory	TSA	Creek, Okfuskee, Okmulgee, Tulsa	94 min
May 16, 10:43 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Tulsa, Wagoner	47 min
May 16, 10:44 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Okmulgee, Osage, Rogers, Tulsa, Wagoner	46 min
May 16, 11:01 PM CDT	Areal Flood Advisory	TSA	Craig, Mayes, Nowata, Rogers, Tulsa	119 min
May 16, 11:01 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Muskogee, Okfuskee, Okmulgee, Tulsa, Wagoner	44 min
May 16, 11:09 PM CDT	Areal Flood Advisory	TSA	Creek, McIntosh, Mayes, Muskogee, Okfuskee, Okmulgee and 3 more	2 hr
May 16, 11:12 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Nowata, Rogers	48 min
May 16, 11:19 PM CDT	Tornado Warning	TSA	Tulsa, Wagoner	26 min
May 16, 11:29 PM CDT	Severe Thunderstorm Warning	TSA	Craig, Mayes, Rogers, Tulsa, Wagoner	61 min
May 16, 11:35 PM CDT	Tornado Warning Tornado observed	TSA	Mayes, Rogers, Wagoner	25 min
May 16, 11:39 PM CDT	Severe Thunderstorm Warning	TSA	Cherokee, McIntosh, Mayes, Muskogee, Okmulgee, Wagoner	51 min
May 16, 11:47 PM CDT	Tornado Warning	TSA	Mayes, Rogers	28 min
May 17, 12:05 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Ottawa	55 min
May 17, 12:09 AM CDT	Severe Thunderstorm Warning	TSA	Pittsburg	66 min
May 17, 12:12 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Delaware, McIntosh, Mayes, Muskogee and 2 more	63 min
May 17, 12:16 AM CDT	Tornado Warning	TSA	Craig, Delaware, Mayes, Ottawa	29 min
May 17, 12:19 AM CDT	Areal Flood Advisory	TSA	Adair, Cherokee, Craig, Delaware, Haskell, McIntosh and 5 more	116 min
May 17, 12:34 AM CDT	Tornado Warning	TSA	Delaware, Ottawa	31 min
May 17, 12:49 AM CDT	Areal Flood Advisory	TSA	Haskell, Latimer, McIntosh, Muskogee, Pittsburg	116 min
May 17, 12:56 AM CDT	Flash Flood Warning	TSA	Adair, Cherokee, Haskell, Latimer, LeFlore, McIntosh and 4 more	6 hr
May 17, 12:59 AM CDT	Areal Flood Advisory	TSA	Adair, Delaware	2 hr
May 17, 1:13 AM CDT	Severe Thunderstorm Warning	TSA	Adair, Cherokee, Haskell, LeFlore, Muskogee, Sequoyah	62 min
May 17, 1:14 AM CDT	Special Weather Statement	TSA	Latimer	61 min
May 17, 1:37 AM CDT	Flash Flood Warning	TSA	Adair	6 hr
May 17, 2:02 AM CDT	Severe Thunderstorm Warning	TSA	Choctaw, Latimer, Pittsburg, Pushmataha	58 min
May 17, 2:24 AM CDT	Special Weather Statement	TSA	Latimer	66 min
May 17, 2:48 AM CDT	Areal Flood Advisory	TSA	Choctaw, Pushmataha	117 min
May 17, 3:00 AM CDT	Severe Thunderstorm Warning	TSA	Latimer, LeFlore, Pushmataha	45 min
May 17, 3:01 AM CDT	Special Weather Statement	TSA	McCurtain	59 min
May 17, 6:36 AM CDT	Areal Flood Warning	TSA	Adair, Haskell, Latimer, LeFlore, McIntosh, Muskogee and 2 more	8 hr
May 17, 9:00 AM CDT	River Flood Advisory	TSA	Cherokee	55 hr
May 17, 9:11 AM CDT	River Flood Warning	TSA	Okmulgee	71 hr
May 17, 9:11 AM CDT	River Flood Warning	TSA	Ottawa	3 days

Nearby

Severe Thunderstorm Warnings in Oklahoma, 2015 Every 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.