Alert archive / Oklahoma / Special Weather Statements in 2012

Special Weather Statement, NWS Tulsa, OK

April 30, 2012Muskogee County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Apr 30, 2012, 7:18 PM CDT for Muskogee County, Oklahoma. It was in force for 42 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: Apr 30, 2012, 7:18 PM CDT (00:18 UTC)
Expired: Apr 30, 2012, 8:00 PM CDT
In force: 42 min
Issued by: NWS Tulsa, OK

County Muskogee County, OK

The radar

The Tulsa radar (KINX), 60 km from the middle of the area, began a volume at 00:17 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 nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 0.3 hours before the alert went out and 193 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.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Apr 30, 6:52 PM CDT, 26 minutes earlier.

Area forecast discussion, Apr 30, 6:52 PM CDT, 26 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
652 PM CDT MON APR 30 2012

.DISCUSSION...

THE 00Z AVIATION DISCUSSION CAN BE FOUND BELOW.

&&

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM.

EXPECT MAINLY VFR CONDITIONS THROUGH 06Z AT MOST SITES. A TS
COMPLEX IS EXPTD TO MOVE EAST ALONG THE KS/OK BORDER TONIGHT...AND
THIS MAY IMPACT THE NE OK TERMINALS...BUT PROBABLY NOT BEFORE 04Z.
MVFR CIGS WILL RETURN BY 12Z AT MOST SITES EXCPT KFSM...BEFORE
BECOMING VFR BY MIDDAY. SOUTH WINDS WILL BE QUITE STRONG ON
TUESDAY...WITH GUSTS AOA 25 KTS FOR THE NE OK AND NW AR SITES.

LACY

&&

.PREV DISCUSSION... /ISSUED 302 PM CDT MON APR 30 2012/

DISCUSSION...
RAIN HAS ENDED ACROSS NE OK FOR NOW...SCATTERED SHOWERS AND
THUNDERSTORMS REMAIN ONGOING ACROSS SE OK AND WC AR THIS
AFTERNOON. FOCUS WILL THEN SHIFT BACK TO NE OK TONIGHT AS ANOTHER
POTENTIALLY ACTIVE NIGHT IS IN THE OFFING. HAVE ISSUED A FLASH
FLOOD WATCH ACROSS THE FAR NORTHERN TIER COUNTIES OF NE OK...AS THESE
AREAS HAVE ALREADY RECEIVED FLOODING RAINS THAT HAS PROMPTED
SEVERAL RESCUE EFFORTS ACROSS OSAGE COUNTY THROUGH THIS MORNING.
WHILE UNCERTAINTY EXISTS REGARDING THE DETAILS OF TONIGHTS
EVENT...ANTECEDENT CONDITIONS AND ADDITIONAL RAINFALL...EVEN IN
LESSER AMOUNTS...WILL RAPIDLY AGGRAVATE FLOODING CONCERNS IN THE
WATCH AREA. THE WATCH IS IN EFFECT FROM 7 PM THIS EVENING TO 7 AM
TUESDAY MORNING. RAIN CHANCES WILL DIMINISH TUESDAY...THEN A WARM
HUMID AND CAPPED PATTERN BEGINS TO TAKE SHAPE ACROSS THE SOUTHERN
PLAINS. MID LEVEL HEIGHT RISES AND WARMING TEMPERATURES WILL TAKE
HOLD FROM WEDNESDAY ON THROUGH THE REST OF THE FORECAST. MEDIUM
RANGE GUIDANCE CARVES OUT THE NEXT TROUGH THAT WILL STAY TO THE
WEST FOR THE EARLY PART OF NEXT WEEK WHICH WILL AID IN KEEPING THE
RIDGE INTACT OVER THE PLAINS. TEMP WISE... STAYED CLOSER TO THE
WARMER MET GUIDANCE FOR THE EARLY PERIODS...AND OPTED FOR WEIGHTED
ECMWF NUMBERS IN THE LATTER PORTION OF THE FORECAST.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   66  85  68  87 /  50  30  10  10
FSM   66  85  67  86 /  40  20  10  10
MLC   67  85  68  86 /  40  20  10  10
BVO   64  83  66  86 /  60  40  10  10
FYV   63  82  65  84 /  50  30  10  10
BYV   62  82  64  86 /  50  30  10  10
MKO   66  84  67  85 /  50  30  10  10
MIO   63  83  66  86 /  60  40  10  10
F10   66  84  67  85 /  50  30  10  10
HHW   67  85  68  86 /  40  20  10  10

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...FLASH FLOOD WATCH UNTIL 7 AM TUESDAY FOR OKZ054-OKZ055-OKZ056-
     OKZ057-OKZ058-OKZ059.

AR...NONE.
&&

AVIATION...30

Hazardous weather outlook, Apr 30, 5:16 PM CDT, 2 hours 2 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
516 PM CDT MON APR 30 2012

ARZ001-002-010-011-019-020-029-OKZ049-053>076-011000-
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-
453 PM CDT MON APR 30 2012

...STRONG TO SEVERE THUNDERSTORM CHANCES AGAIN THROUGH TONIGHT...

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

.DAY ONE...THIS EVENING AND TONIGHT.

SEVERE THUNDERSTORM.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

FLASH FLOOD.
	RISK...ELEVATED.
	AREA...NORTHEAST OKLAHOMA.
	ONSET...AFTER 7 PM.

HEAVY RAIN.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
SCATTERED SHOWERS AND THUNDERSTORMS CONTINUE TO MOVE ACROSS
SOUTHEAST OKLAHOMA AND WEST CENTRAL ARKANSAS IN RELATION TO A
REMNANT OUTFLOW BOUNDARY. WARM AND HUMID CONDITIONS AHEAD OF THIS
BOUNDARY HAS ALLOWED FOR FAVORABLE INSTABILITY SUPPORTIVE OF LARGE
HAIL BEING THE MAIN THREAT. THESE STORMS SHOULD DIMINISH DURING
THE EVENING HOURS WITH THE LOSS OF DAYTIME HEATING.

ADDITIONAL THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS EVENING AND
OVERNIGHT OVER WESTERN OKLAHOMA AND MOVE ACROSS NORTHEAST OKLAHOMA
AND NORTHWEST ARKANSAS. THIS THUNDERSTORM COMPLEX WILL HAVE THE
POTENTIAL FOR STRONG THE SEVERE THUNDERSTORMS WITH LARGE HAIL AND
DAMAGING WIND BEING THE MAIN THREATS. FLASH FLOODING WILL ALSO BE
A CONCERN AGAIN...WITH HEAVY RAINS POSSIBLY AFFECTING AREAS THAT
RECEIVED FLOODING RAINS LAST NIGHT. A FLASH FLOOD WATCH IS IN
EFFECT THROUGH TONIGHT FOR LOCATIONS NEAR THE OKLAHOMA KANSAS
BORDER.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
LOCAL SPOTTER ACTIVATION MAY BE NEEDED.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
TUESDAY...THUNDERSTORM POTENTIAL...HIGH WIND POTENTIAL.
WEDNESDAY...HIGH WIND POTENTIAL.
THURSDAY AND SUNDAY...NO HAZARDS.

EXTENDED DISCUSSION...
THE OVERALL POTENTIAL FOR THUNDERSTORMS WILL DECREASE
SIGNIFICANTLY BY TUESDAY AS A STATIONARY FRONT THAT HAS BEEN
OVER THE AREA FOR SEVERAL DAYS LIFTS TO THE NORTH. SOUTH WINDS
WILL BECOME STRONG TUESDAY AND WEDNESDAY WITH GUSTS OVER 30 MPH
LIKELY. VERY WARM AND HUMID WEATHER WILL PREVAIL THROUGH THE
WEEKEND.

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

In the hours before

Special weather statement, Apr 30, 2:44 PM CDT, 4 hours 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
244 PM CDT MON APR 30 2012

OKZ053-302030-
CHOCTAW OK-
244 PM CDT MON APR 30 2012

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 330 PM CDT
FOR THE FOLLOWING COUNTY...

IN SOUTHEAST OKLAHOMA
     WESTERN CHOCTAW

AT 245 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 10 MILES SOUTH OF
UNGER...MOVING NORTHEAST AT 20 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...GAY...UNGER AND SOPER.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS STORM
WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH. RESIDENTS IN THESE
AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT WEATHER ADVISORY IS
UPGRADED TO A WARNING.

LAT...LON 3387 9584 3393 9591 3410 9574 3394 9553
      3392 9556 3393 9559 3390 9563 3390 9567
      3388 9569 3389 9575 3386 9577
TIME...MOT...LOC 1945Z 227DEG 17KT 3388 9580

Special weather statement, Apr 30, 5:33 PM CDT, 1 hour 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
533 PM CDT MON APR 30 2012

OKZ075-076-302300-
LATIMER OK-LE FLORE OK-
533 PM CDT MON APR 30 2012

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 600 PM CDT
FOR THE FOLLOWING COUNTIES...

IN SOUTHEAST OKLAHOMA
     WESTERN LE FLORE AND NORTHEASTERN LATIMER

AT 533 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES SOUTHWEST
OF FANSHAWE...MOVING NORTHEAST AT 15 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...FANSHAWE.

THIS STORM WILL BE CAPABLE OF PRODUCING PENNY SIZE HAIL.

LAT...LON 3513 9489 3500 9468 3488 9494 3492 9501
TIME...MOT...LOC 2233Z 221DEG 15KT 3492 9494

Special weather statement, Apr 30, 7:03 PM CDT, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
703 PM CDT MON APR 30 2012

OKZ055-056-061-010030-
NOWATA OK-ROGERS OK-WASHINGTON OK-
703 PM CDT MON APR 30 2012

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 730 PM CDT
FOR THE FOLLOWING COUNTIES...

IN NORTHEAST OKLAHOMA
     SOUTHERN NOWATA...NORTHWESTERN ROGERS AND WASHINGTON

AT 703 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 12 MILES WEST OF
WATOVA...MOVING NORTHEAST AT 15 MPH. SOME LOCATIONS THAT WILL BE
AFFECTED BY THIS STORM INCLUDE...NOWATA AND WATOVA.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL.

THIS STORM HAS DEVELOPED FAIRLY QUICKLY IN AN UNSTABLE AIRMASS. BE
ALERT IN CASE THIS ADVISORY IS UPGRADED TO A WARNING.

LAT...LON 3678 9584 3665 9544 3652 9582 3655 9595
TIME...MOT...LOC 0003Z 219DEG 15KT 3657 9584

Special weather statement, Apr 30, 7:18 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
718 PM CDT MON APR 30 2012

OKZ068-070-010100-
CHEROKEE OK-MUSKOGEE OK-
718 PM CDT MON APR 30 2012

...SIGNIFICANT WEATHER ADVISORY...

THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A
SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 800 PM CDT
FOR THE FOLLOWING COUNTIES...

IN EAST CENTRAL OKLAHOMA
     SOUTHERN CHEROKEE AND NORTHEASTERN MUSKOGEE

AT 718 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER KEEFETON...
MOVING NORTHEAST AT 25 MPH. SOME LOCATIONS THAT WILL BE AFFECTED BY
THIS STORM INCLUDE...PUMPKIN CENTER...MUSKOGEE...KEEFETON...BRAGGS
AND FORT GIBSON.

THIS STORM WILL BE CAPABLE OF PRODUCING NICKEL SIZE HAIL. THIS STORM
WILL BE CAPABLE OF PRODUCING WIND GUSTS TO 40 MPH. RESIDENTS IN THESE
AREAS SHOULD REMAIN ALERT IN CASE THE SIGNIFICANT WEATHER ADVISORY IS
UPGRADED TO A WARNING.

LAT...LON 3581 9534 3582 9531 3574 9506 3552 9531
      3554 9535 3555 9535 3555 9537 3559 9544
      3582 9536
TIME...MOT...LOC 0018Z 209DEG 22KT 3559 9534

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, 7:54 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, 12:59 AM CDT	Severe Thunderstorm Warning	TSA	Craig, Delaware, Mayes, Nowata, Ottawa, Rogers	76 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
May 1, 3:44 AM CDT	Special Weather Statement	TSA	Benton	46 min
May 1, 3:47 AM CDT	Special Weather Statement	TSA	Crawford	43 min
May 1, 4:12 AM CDT	Severe Thunderstorm Warning	TSA	Madison, Washington	43 min
May 1, 4:13 AM CDT	Special Weather Statement	TSA	Crawford, Franklin, Sebastian	62 min
May 1, 4:34 AM CDT	Special Weather Statement	TSA	Carroll	41 min

Nearby

Special Weather Statements in Oklahoma, 2012 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.