Alert archive / Oklahoma / Special Weather Statements in 2015

Special Weather Statement, NWS Tulsa, OK

September 8, 2015Delaware County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Sep 8, 2015, 3:49 PM CDT for Delaware County, Oklahoma. It was in force for 41 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 8, 2015, 3:49 PM CDT (20:49 UTC)
Expired: Sep 8, 2015, 4:30 PM CDT
In force: 41 min
Issued by: NWS Tulsa, OK

County Delaware County, OK

The radar

The Tulsa radar (KINX), 84 km from the middle of the area, began a volume at 20:48 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 12:00Z, 8.8 hours before the alert went out and 101 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: 763 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 1220 m above ground
0-6 km bulk shear: 6 kt
0-1 km storm-relative helicity: 78 m²/s²
0-3 km storm-relative helicity: 129 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 3.0

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 Sep 8, 2:46 PM CDT, 1 hour 3 minutes earlier.

Area forecast discussion, Sep 8, 2:46 PM CDT, 1 hour 3 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE TULSA OK
246 PM CDT TUE SEP 8 2015

.DISCUSSION...
Surface cold front pushing into far northeast Oklahoma as of
mid afternoon. Low coverage of showers and storms had been
lingering across far northeast Oklahoma and southeast Kansas for
much of the day. Coverage over the last few hours has increased as
the front has gotten a little better push. Overall severe risk
will remain limited...and mainly confined to northeast Oklahoma
during the afternoon and early evening hours. As areal coverage
increases...the risk for severe will lessen some with locally
heavy rainfall becoming the main risk. The front looks to
accelerate southeast overnight...which will result in a lower
heavy rain risk further southeast. Rain chances to diminish across
most of the area Wednesday...with cooler weather expected through
Thursday before another upper system and a sfc boundary impacting
the area late Thursday night and Friday. With less moisture to
work with...will keep lower end pops as they are during that time
period. Upper system slows and wraps up over the midwest during
the weekend...resulting in a dry weekend with a sneak peek at
temperatures more typical of early fall.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   68  85  68  87 /  90  20  10  10
FSM   71  84  68  88 /  80  60  10  10
MLC   70  84  68  88 /  80  40  10   0
BVO   67  85  64  86 /  80  10  10  10
FYV   67  81  64  83 /  80  40  10  10
BYV   67  81  64  81 /  90  40  10  10
MKO   69  84  67  87 /  80  20  10  10
MIO   67  84  65  85 /  90  20  10  10
F10   69  84  67  87 /  80  20  10  10
HHW   72  86  70  88 /  70  60  20  10

&&

.TSA WATCHES/WARNINGS/ADVISORIES...
OK...NONE.
AR...NONE.
&&

SHORT TERM...30
LONG TERM....23

Hazardous weather outlook, Sep 8, 12:52 PM CDT, 2 hours 57 minutes before

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In the hours before

Local storm report, Sep 8, 2:36 PM CDT, 1 hour 13 minutes before

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Special weather statement, Sep 8, 2:36 PM CDT, 1 hour 13 minutes before

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Special weather statement, Sep 8, 3:03 PM CDT, 46 minutes before

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Local storm report, Sep 8, 3:21 PM CDT, 28 minutes before

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Special weather statement, Sep 8, 3:26 PM CDT, 23 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
326 PM CDT TUE SEP 8 2015

ARZ019-029-082115-
CRAWFORD AR-SEBASTIAN AR-
326 PM CDT TUE SEP 8 2015

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN SEBASTIAN AND SOUTH
CENTRAL CRAWFORD COUNTIES UNTIL 415 PM CDT...

AT 326 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES NORTHWEST
OF LAVACA...MOVING NORTHEAST AT 10 MPH.

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

LOCATIONS IN OR NEAR THE PATH INCLUDE...
FORT SMITH...                     VAN BUREN...
GREENWOOD...                      ALMA...
BARLING...                        LAVACA...
BLOOMER...                        KIBLER...
CENTRAL CITY...                   CONCORD...
URSULA...                         SHIBLEY...
FURRY...

THIS INCLUDES INTERSTATE 40 IN ARKANSAS BETWEEN MILE MARKERS 6 AND
13.

LAT...LON 3526 9408 3519 9418 3537 9443 3554 9425
      3539 9408
TIME...MOT...LOC 2026Z 224DEG 10KT 3537 9424

Special weather statement, Sep 8, 3:49 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
349 PM CDT TUE SEP 8 2015

ARZ001-OKZ063-069-082130-
BENTON AR-ADAIR OK-DELAWARE OK-
349 PM CDT TUE SEP 8 2015

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN BENTON...SOUTHERN
DELAWARE AND NORTHERN ADAIR COUNTIES UNTIL 430 PM CDT...

AT 349 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES NORTHWEST
OF COLCORD...MOVING SOUTHEAST AT 30 MPH.

WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH INCLUDE...
SILOAM SPRINGS...                 JAY...
GENTRY...                         GRAVETTE...
DECATUR...                        WESTVILLE...
WEST SILOAM SPRINGS...            COLCORD...
KANSAS...                         WATTS...
OAKS...                           SPRINGTOWN...
HIWASSE...                        WEST SILOAM SPRING...
TWIN OAKS...                      MAYSVILLE...
CENTERTON...                      SULPHUR SPRINGS...
BALLARD...                        LAKE FRANCIS...

LAT...LON 3653 9462 3650 9462 3650 9441 3648 9423
      3610 9449 3610 9455 3604 9454 3594 9463
      3612 9480 3616 9480 3616 9484 3632 9499
      3654 9475
TIME...MOT...LOC 2049Z 314DEG 27KT 3632 9475

LACY

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 8, 2:36 PM CDT	Special Weather Statement	TSA	Craig, Ottawa	39 min
Sep 8, 3:03 PM CDT	Special Weather Statement	TSA	Delaware	42 min
Sep 8, 3:28 PM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Mayes, Ottawa	3 hr
Sep 8, 3:42 PM CDT	Areal Flood Advisory	TSA	Delaware, Mayes, Ottawa	4 hr
Sep 8, 3:56 PM CDT	Special Weather Statement	TSA	LeFlore	34 min
Sep 8, 4:24 PM CDT	Special Weather Statement	TSA	Creek	36 min
Sep 8, 5:08 PM CDT	Special Weather Statement	TSA	Pawnee	37 min
Sep 8, 5:16 PM CDT	Severe Thunderstorm Warning	TSA	Osage, Pawnee	44 min
Sep 8, 5:20 PM CDT	Special Weather Statement	TSA	Creek	25 min
Sep 8, 5:36 PM CDT	Areal Flood Advisory	TSA	Adair, Cherokee	3 hr
Sep 8, 5:41 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Tulsa	29 min
Sep 8, 6:03 PM CDT	Areal Flood Advisory	TSA	Creek, Okmulgee, Osage, Pawnee, Tulsa, Washington	3 hr
Sep 8, 6:08 PM CDT	Special Weather Statement	TSA	Creek, Okmulgee, Osage, Tulsa, Washington	52 min
Sep 8, 6:12 PM CDT	Special Weather Statement	TSA	Latimer	33 min
Sep 8, 6:29 PM CDT	Severe Thunderstorm Warning	TSA	Creek, Osage, Pawnee, Tulsa, Washington	46 min
Sep 8, 6:51 PM CDT	Severe Thunderstorm Warning	TSA	Rogers, Wagoner	39 min
Sep 8, 3:26 PM CDT	Special Weather Statement	TSA	Sebastian	49 min
Sep 8, 4:16 PM CDT	Special Weather Statement	TSA	Benton	44 min

Nearby

Special Weather Statements in Oklahoma, 2015 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.