Alert archive / Oklahoma / Special Weather Statements in 2016

Special Weather Statement, NWS Tulsa, OK

August 25, 2016Washington County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Aug 25, 2016, 4:35 PM CDT for Washington County, Oklahoma. It was in force for 25 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
Aug 25, 2016, 4:35 PM CDT (21:35 UTC)
Expired
Aug 25, 2016, 5:00 PM CDT
In force
25 min
Issued by
NWS Tulsa, OK

County Washington County, OK

The radar

The Tulsa radar (KINX), 49 km from the middle of the area, began a volume at 21:39 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 12:00Z, 9.6 hours before the alert went out and 187 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 12:00Z on 2016-08-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 649 joules per kilogram.LCLLFCEL10008507005003002001001 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 12:00Z on 2016-08-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 38 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
649 J/kg
Mixed-layer CIN
-111 J/kg
Mixed-layer LCL
1204 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
38 m²/s²
0-3 km storm-relative helicity
174 m²/s²
Significant tornado parameter
0.1
Supercell composite
0.3

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 Aug 25, 2:32 PM CDT, 2 hours 3 minutes earlier.

Area forecast discussion, Aug 25, 2:32 PM CDT, 2 hours 3 minutes before
Area Forecast Discussion
National Weather Service Tulsa OK
232 PM CDT THU AUG 25 2016

.DISCUSSION...
Surface front currently stretches from eastern KS into
southwestern OK...with an unstable and weakly capped atmosphere
located across our region. Have seen isolated weak convection
develop earlier in the terrain areas and most recently near the
frontal boundary across northern OK. Convection will eventually
expand in coverage from eastern KS into the TX panhandle...with
areas northwest of I-44 having the best chances of seeing late
afternoon/evening storms. A strong/severe storm will be
possible...along with a few spots of locally heavy rainfall.

The weak front will likely lift back north of the area by
Friday...but still could see widely scattered areas of
showers/thunderstorms as weak impulses traverse the region in the
southwesterly flow aloft.

Mid-level flow weakens over the weekend and into next week as the
main belt of westerlies lifts north. Expect an extended period of
near seasonal temperatures with mainly diurnal chances of showers
and thunderstorms.

Still plenty of model uncertainty concerning potential track of
tropical system into the Gulf of Mexico next week. Stay tuned.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   72  92  72  93 /  30  30  20  30
FSM   74  91  72  92 /  20  50  20  30
MLC   72  90  70  92 /  20  40  20  30
BVO   69  91  68  92 /  50  30  20  20
FYV   69  86  67  88 /  20  50  20  30
BYV   70  85  68  88 /  30  50  20  30
MKO   72  90  70  91 /  20  40  20  30
MIO   70  89  69  91 /  30  50  20  30
F10   72  89  71  91 /  20  30  20  30
HHW   73  89  71  92 /  10  50  20  30

&&

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

SHORT TERM...05
LONG TERM....18
Hazardous weather outlook, Aug 25, 12:57 PM CDT, 3 hours 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
1257 PM CDT THU AUG 25 2016

ARZ001-002-010-011-019-020-029-OKZ049-053>076-261030-
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-
1257 PM CDT THU AUG 25 2016

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SEVERE THUNDERSTORM.
	RISK...LIMITED.
	AREA...FAR NORTHEAST OKLAHOMA.
	ONSET...LATE AFTERNOON AND EVENING.

DANGEROUS HEAT.
	RISK...LIMITED.
	AREA...EASTERN OKLAHOMA AND WEST-CENTRAL ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
SCATTERED SHOWERS AND THUNDERSTORMS WILL BE POSSIBLE LATER THIS
AFTERNOON AND EVENING NEAR A STALLING FRONTAL BOUNDARY ACROSS
FAR NORTHEAST OKLAHOMA. SOME OF THESE STORMS WILL HAVE THE POTENTIAL
TO BECOME STRONG TO SEVERE WITH DAMAGING WINDS AND LARGE HAIL THE
CONCERN. THE POTENTIAL FOR SHOWERS AND THUNDERSTORMS WILL CONTINUE
INTO THE OVERNIGHT HOURS ACROSS NORTHEAST OKLAHOMA AND EVEN NORTHWEST
ARKANSAS AS A THUNDERSTORM COMPLEX APPROACHES FROM THE WEST.
LOCALLY HEAVY RAINFALL WILL BE LIKELY WITH ANY STORMS THAT
DEVELOP.

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

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY THROUGH WEDNESDAY...THUNDERSTORM POTENTIAL.

EXTENDED DISCUSSION...
SCATTERED SHOWERS AND THUNDERSTORMS WILL REMAIN BE POSSIBLE ACROSS
EASTERN OKLAHOMA AND NORTHWEST ARKANSAS FRIDAY AND SATURDAY AS A
SERIES OF WEAK UPPER WAVES LIFT NORTH OUT OF TEXAS.

SHOWER AND THUNDERSTORM CHANCES WILL CONTINUE SUNDAY THROUGH MUCH OF
NEXT WEEK AS A MOIST AND UNSTABLE AIR-MASS REMAINS IN PLACE.
THUNDERSTORM DEVELOPMENT NEXT WEEK WILL MAINLY BE CONFINED TO THE
AFTERNOON HOURS IN ASSOCIATION WITH PEAK HEATING.

WWW.WEATHER.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Special weather statement, Aug 25, 4:35 PM CDT, 0 minutes before
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    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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        Please try again in a few minutes.
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 25, 3:46 PM CDTSevere Thunderstorm WarningTSAOsage, Pawnee44 min
Aug 25, 4:01 PM CDTSevere Thunderstorm WarningTSACreek, Pawnee32 min
Aug 25, 5:59 PM CDTSpecial Weather StatementTSACraig, Ottawa31 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.