Alert archive / Oklahoma / Special Weather Statements in 2016

Special Weather Statement, NWS Tulsa, OK

September 17, 2016Pittsburg County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Sep 17, 2016, 7:10 PM CDT for Pittsburg County, Oklahoma. It was in force for 50 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
Sep 17, 2016, 7:10 PM CDT (00:10 UTC)
Expired
Sep 17, 2016, 8:00 PM CDT
In force
50 min
Issued by
NWS Tulsa, OK

County Pittsburg County, OK

The radar

The Norman radar (KTLX), 120 km from the middle of the area, began a volume at 00:12 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

Norman, OK (KOUN), launched 00:00Z, 0.2 hours before the alert went out and 128 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 2016-09-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Norman, OK at 00:00Z on 2016-09-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 16 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1493 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
16 m²/s²
0-3 km storm-relative helicity
159 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Sep 17, 6:14 PM CDT, 56 minutes earlier.

Area forecast discussion, Sep 17, 6:14 PM CDT, 56 minutes before
Area Forecast Discussion
National Weather Service Tulsa OK
614 PM CDT SAT SEP 17 2016

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Ongoing convective complex across central OK will continue ESE
while likely gradually weakening. Aviation impacts are possible
across E OK with this round of precip. Areas of fog are again
likely tonight ahead of an additional convective complex which is
likely to pass near or through the area late tonight through early
Sun morning. Once that round of precip passes...VFR conditions
are expected.

&&

.PREV DISCUSSION... /Issued 318 PM CDT SAT SEP 17 2016/

DISCUSSION...
Main forecast challenge focuses on precipitation chances and
timing. Early morning MCS across TX panhandle weakened some
through mid-morning...but has intensified this afternoon as it
moves into a more unstable airmass across western OK. Now this
complex of storms is expected to maintain strength moving into
central OK by late afternoon...and possibly eastern OK by early
evening. Meanwhile...isolated storms are developing across
central/south central OK and may affect SE OK late this afternoon.
Any of these storms will be capable of isolated severe wind gusts
or hail given deep layer shear above 30 kt and cool mid level
temps.

Another round of thunderstorms is possible late tonight...as upper
wave moves east from CO/KS. Storms have already developed this
afternoon across northeast CO/wrn KS...and this may organize into
an MCS and move southeast late tonight. Have added pops in the
first period...for isolated afternoon/evening storms in the
western CWA with higher pops after midnight. Storms may spread
from northwest to southeast overnight with a threat for heavy
rains and possible flash flooding as well as strong/severe wind
gusts.

Storms will exit the area by Sunday morning with most areas
clearing out quickly. This will mark the last chance for any
storms for at least a few days...as upper ridge builds into the
area on Mon/Tue.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   63  86  68  92 /  70  30  10   0
FSM   68  86  66  93 /  60  50  10   0
MLC   66  87  68  93 /  70  50  10   0
BVO   59  85  64  91 /  60  30  10   0
FYV   60  83  62  88 /  40  40  10   0
BYV   62  82  64  89 /  40  30  10   0
MKO   63  86  66  92 /  70  40  10   0
MIO   59  84  65  91 /  40  20  10   0
F10   64  86  69  93 /  90  40  10   0
HHW   67  87  68  93 /  70  60  10   0

&&

.TSA Watches/Warnings/Advisories...
OK...None.
AR...None.
&&

AVIATION...07
Hazardous weather outlook, Sep 17, 4:05 PM CDT, 3 hours 5 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
405 PM CDT SAT SEP 17 2016

ARZ001-002-010-011-019-020-029-OKZ049-053>076-181015-
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-
405 PM CDT SAT SEP 17 2016

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

.DAY ONE...REMAINDER OF THIS AFTERNOON AND TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
 	AREA...ALONG AND WEST OF HIGHWAY 75.
	ONSET...AFTER 7 PM.

DISCUSSION...
THE THUNDERSTORM COMPLEX CURRENTLY MOVING THROUGH SOUTHWEST OKLAHOMA
WILL CONTINUE EASTWARD THIS AFTERNOON...POTENTIALLY MOVING INTO
PORTIONS OF EASTERN OKLAHOMA EARLY TO MID EVENING. ALTHOUGH
INSTABILITY IS LESS ACROSS EASTERN OKLAHOMA...A FEW OF THESE STORMS
COULD APPROACH SEVERE LIMITS WITH GUSTY WINDS.

ADDITIONAL STORMS ARE EXPECTED TO FORM ON THE HIGH PLAINS AND
ORGANIZE INTO AN EASTWARD MOVING COMPLEX TONIGHT INTO SUNDAY MORNING
ACROSS OKLAHOMA AND EVENTUALLY WESTERN ARKANSAS, SUPPORTED BY AN
UPPER LEVEL WAVE. THE ACTIVITY SHOULD ARRIVE DURING THE EARLY
MORNING HOURS ON SUNDAY MORNING AND EXIT BY MIDDAY. THE DAMAGING
WIND RISK WILL BE LIMITED, MAINLY DUE TO THE COOL, MORE STABLE
CONDITIONS EXPECTED OVER THE REGION BY THIS TIME. GUSTY WINDS AND
LOCALLY HEAVY RAIN ARE MORE LIKELY.

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

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.
SUNDAY...THUNDERSTORM POTENTIAL.
MONDAY THRU FRIDAY...NO HAZARDS.

EXTENDED DISCUSSION...

STORMS WILL BE ONGOING SUNDAY MORNING ACROSS EASTERN OK AND
NORTHWEST AR, AND SHOULD EXIT THE REGION BY AROUND MIDDAY. THE
SEVERE WEATHER RISK SHOULD REMAIN LOW DUE TO THE STABLE
CONDITIONS EXPECTED TO BE IN PLACE AT THIS TIME. GUSTY WINDS AND
LOCALLY HEAVY RAIN ARE POSSIBLE.

RIDGING ALOFT WILL BRING TRANQUIL WEATHER TO THE REGION NEXT WEEK.

WWW.WEATHER.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Special weather statement, Sep 17, 5:33 PM CDT, 1 hour 37 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
533 PM CDT SAT SEP 17 2016

OKZ049-053-172300-
PUSHMATAHA OK-CHOCTAW OK-
533 PM CDT SAT SEP 17 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CHOCTAW AND SOUTH
CENTRAL PUSHMATAHA COUNTIES UNTIL 600 PM CDT...

AT 533 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER
RATTAN...MOVING EAST AT 20 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
RATTAN...                         OLETA...
APPLE...                          CORINNE...

LAT...LON 3416 9551 3429 9546 3427 9523 3407 9530
TIME...MOT...LOC 2233Z 288DEG 17KT 3420 9542
Special weather statement, Sep 17, 6:38 PM CDT, 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
638 PM CDT SAT SEP 17 2016

OKZ059-180015-
PAWNEE OK-
638 PM CDT SAT SEP 17 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PAWNEE COUNTY UNTIL
715 PM CDT...

AT 638 PM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 5 MILES WEST OF MORRISON TO RIPLEY. MOVEMENT WAS
NORTHEAST AT 20 MPH.

WIND GUSTS UP TO 40 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
PAWNEE...

LAT...LON 3651 9703 3651 9701 3649 9700 3646 9697
      3646 9693 3647 9689 3616 9664 3616 9682
      3624 9682 3625 9684 3625 9692 3633 9693
      3634 9703
TIME...MOT...LOC 2338Z 240DEG 17KT 3626 9711 3601 9692
Special weather statement, Sep 17, 7:10 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
710 PM CDT SAT SEP 17 2016

OKZ073-180100-
PITTSBURG OK-
710 PM CDT SAT SEP 17 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN PITTSBURG COUNTY
UNTIL 800 PM CDT...

AT 710 PM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM NEAR WEWOKA TO NEAR CALVIN TO NEAR CENTRAHOMA.
MOVEMENT WAS EAST AT 15 MPH.

WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THESE STORMS.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
KIOWA...                          ASHLAND...
HAYWOOD...                        SCIPIO...
ARPELAR...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORMS.
LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

LAT...LON 3505 9609 3506 9607 3509 9606 3512 9603
      3512 9601 3515 9601 3515 9599 3494 9588
      3468 9591 3468 9609
TIME...MOT...LOC 0010Z 265DEG 11KT 3515 9647 3495 9625 3459 9635

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 17, 7:36 PM CDTSpecial Weather StatementTSAPittsburg54 min
Sep 17, 7:46 PM CDTSpecial Weather StatementTSAMcIntosh29 min
Sep 17, 7:53 PM CDTSpecial Weather StatementTSAPushmataha37 min
Sep 17, 8:06 PM CDTSevere Thunderstorm WarningTSAPushmataha54 min
Sep 17, 8:30 PM CDTSevere Thunderstorm WarningTSAPushmataha60 min
Sep 17, 8:55 PM CDTSevere Thunderstorm WarningTSAChoctaw, Pushmataha51 min

Nearby

Special Weather Statements in Oklahoma, 2016Every special weather statement in 2016

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.