Alert archive / Oklahoma / Special Weather Statements in 2016

Special Weather Statement, NWS Tulsa, OK

July 27, 2016Delaware County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Jul 27, 2016, 7:34 PM CDT for Delaware County, Oklahoma. It was in force for 26 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
Jul 27, 2016, 7:34 PM CDT (00:34 UTC)
Expired
Jul 27, 2016, 8:00 PM CDT
In force
26 min
Issued by
NWS Tulsa, OK

County Delaware County, OK

The radar

The Tulsa radar (KINX), 77 km from the middle of the area, began a volume at 00:33 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, 0.6 hours before the alert went out and 107 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, Springfield, MO at 00:00Z on 2016-07-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1902 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, Springfield, MO at 00:00Z on 2016-07-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.1939Sfc1 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
1902 J/kg
Mixed-layer CIN
-18 J/kg
Mixed-layer LCL
1020 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
28 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 Jul 27, 6:29 PM CDT, 1 hour 5 minutes earlier.

Area forecast discussion, Jul 27, 6:29 PM CDT, 1 hour 5 minutes before
Area Forecast Discussion
National Weather Service Tulsa OK
629 PM CDT WED JUL 27 2016

.AVIATION...
CONCERNING TAF SITES KTUL/KRVS/KBVO/KMLC/KXNA/KFYV/KFSM/KROG.
Widely scattered thunderstorms continue, with heavy rain and
gusty winds possible at KRVS and KROG through about 01z, before
storms dissipate with loss of daytime heating. IFR visibility
likely within heaviest rain cores. Some fog again possible later
tonight especially where significant rain fell today. Otherwise
VFR conditions will prevail, with isolated storms possible again
Thursday. Coverage expected to be less and will not include
mention of TS at this time.

&&

.PREV DISCUSSION... /Issued 343 PM CDT WED JUL 27 2016/

DISCUSSION...
Scattered showers and thunderstorms have developed again this
afternoon across southeast Oklahoma and northwest Arkansas, with
more isolated activity across northeast Oklahoma. Most of this
activity will dissipate by around sunset, with the best chances of
overnight and early morning development being across southeast
Oklahoma and west central Arkansas.

Convective coverage is expected to be a bit less Thursday
afternoon than it has been the past couple days, and this should
allow afternoon temperatures to be a bit warmer than today in most
places. An MCS is expected to develop over the high plains late
Thursday and Thursday evening, and increasing northwest flow aloft
will steer this complex towards and eventually into our area by
later Thursday night into Friday. At least a limited severe
weather risk will be present at this time, with damaging winds
being the main threat.

The potential exists for another MCS to affect parts of the area
late Friday night into Saturday, but this potential hinges on
airmass recovery following the inital MCS, so confidence is low at
this time. At least low rain chances will continue into Sunday
before an upper ridge builds back over the center of the country
bringing a return to hot weather will very little chance of any
rain by the early to middle part of next week.

Went a bit warmer than most guidance for high temperatures
Thursday, with guidance temperatures looking more reasonable the
other periods over the next couple days.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   72  94  71  87 /  10  20  50  40
FSM   72  92  73  90 /  30  30  20  40
MLC   71  92  72  89 /  20  30  30  40
BVO   69  93  69  87 /  10  20  60  40
FYV   67  89  68  85 /  30  30  30  50
BYV   69  90  69  86 /  30  30  30  50
MKO   72  93  72  88 /  20  20  30  40
MIO   71  91  69  87 /  10  20  30  40
F10   72  92  72  88 /  20  20  30  40
HHW   73  91  72  92 /  40  30  20  30

&&

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

AVIATION...14
Hazardous weather outlook, Jul 27, 4:50 PM CDT, 2 hours 44 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
450 PM CDT WED JUL 27 2016

ARZ001-002-010-011-019-020-029-OKZ049-053>076-281030-
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-
450 PM CDT WED JUL 27 2016

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

.DAY ONE...THIS EVENING AND TONIGHT.

THUNDERSTORMS WITH DANGEROUS LIGHTNING.
	RISK...ELEVATED.
	AREA...EASTERN OKLAHOMA AND NORTHWESTERN ARKANSAS.
	ONSET...ONGOING.

DISCUSSION...
SCATTERED THUNDERSTORMS HAVE DEVELOPED THIS AFTERNOON ACROSS EASTERN
OKLAHOMA AND NORTHWESTERN ARKANSAS. THIS ACTIVITY WILL CONTINUE INTO
THIS EVENING. THE STRONGER STORMS WILL BE CAPABLE OF PRODUCING WIND
GUSTS UP TO ABOUT 50 MPH. MUCH OF THIS ACTIVITY IS EXPECTED TO
DISSIPATE AROUND SUNSET. THE BEST CHANCE FOR OVERNIGHT THUNDERSTORM
ACTIVITY IS SOUTHEASTERN OKLAHOMA AND WEST CENTRAL ARKANSAS.

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

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.
THURSDAY THROUGH SATURDAY...THUNDERSTORM POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL...DANGEROUS HEAT POTENTIAL.
MONDAY AND TUESDAY...DANGEROUS HEAT POTENTIAL.

EXTENDED DISCUSSION...
A MOIST...UNSTABLE...AND WEAKLY CAPPED AIR MASS WILL REMAIN OVER THE
REGION THROUGH THIS WEEKEND. THIS WILL RESULT IN CONTINUE CHANCES OF
SHOWERS AND THUNDERSTORMS THROUGH SUNDAY. GREATER PRECIPITATION
CHANCES LOOK TO BE THURSDAY NIGHT INTO FRIDAY...AND AGAIN FRIDAY
NIGHT INTO SATURDAY AS THUNDERSTORM COMPLEXES PUSH INTO THE REGION
WITHIN THE UPPER LEVEL NORTHWESTERLY FLOW.

A HIGH PRESSURE RIDGE BUILDS BACK ACROSS THE REGION LATE THIS WEEKEND
INTO EARLY NEXT WEEK. THE THUNDERSTORM CHANCES WILL BE MINIMIZED AS A
RESULT OF THIS WEATHER PATTERN AND A RETURN TO ABOVE NORMAL
TEMPERATURES AND HUMIDITY IS EXPECTED.

WWW.WEATHER.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

69

In the hours before

Special weather statement, Jul 27, 3:41 PM CDT, 3 hours 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
341 PM CDT WED JUL 27 2016

OKZ070-071-272100-
MUSKOGEE OK-MCINTOSH OK-
341 PM CDT WED JUL 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MCINTOSH AND
SOUTHEASTERN MUSKOGEE COUNTIES UNTIL 400 PM CDT...

AT 341 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR WARNER. THIS
STORM WAS NEARLY STATIONARY.

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

LOCATIONS IN OR NEAR THE PATH INCLUDE...
WARNER...                         PORUM...
WEBBERS FALLS...

THIS INCLUDES INTERSTATE 40 IN OKLAHOMA BETWEEN MILE MARKERS 267 AND
283.

LAT...LON 3559 9539 3550 9517 3533 9529 3542 9550
TIME...MOT...LOC 2041Z 030DEG 1KT 3547 9533

69
Special weather statement, Jul 27, 5:59 PM CDT, 1 hour 35 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
559 PM CDT WED JUL 27 2016

OKZ060-064-272330-
CREEK OK-TULSA OK-
559 PM CDT WED JUL 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CREEK AND
SOUTHWESTERN TULSA COUNTIES UNTIL 630 PM CDT...

AT 559 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 4 MILES SOUTH OF
SAND SPRINGS. THIS STORM WAS NEARLY STATIONARY.

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

LOCATIONS IN OR NEAR THE PATH INCLUDE...
TULSA...                          SAND SPRINGS...
BIXBY...                          SAPULPA...
JENKS...                          GLENPOOL...
MANNFORD...                       KIEFER...
MOUNDS...                         KELLYVILLE...
KEYSTONE STATE PARK...            LIBERTY...
GRAY...

THIS INCLUDES INTERSTATE 44 BETWEEN MILE MARKERS 192 AND 226.

LAT...LON 3616 9638 3616 9590 3586 9589 3585 9642
TIME...MOT...LOC 2259Z 030DEG 1KT 3607 9609

69
Special weather statement, Jul 27, 6:51 PM CDT, 43 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TULSA OK
651 PM CDT WED JUL 27 2016

OKZ065-066-280015-
OKFUSKEE OK-OKMULGEE OK-
651 PM CDT WED JUL 27 2016

...SIGNIFICANT WEATHER ADVISORY FOR OKFUSKEE AND SOUTHWESTERN
OKMULGEE COUNTIES UNTIL 715 PM CDT...

AT 651 PM CDT...STRONG THUNDERSTORMS WERE LOCATED ALONG A LINE
EXTENDING FROM OKMULGEE TO 5 MILES NORTH OF PHAROAH TO 3 MILES
NORTHWEST OF BEARDEN. THESE STORMS WERE NEARLY STATIONARY.

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

LOCATIONS IN OR NEAR THE PATH INCLUDE...
OKMULGEE...                       OKEMAH...
HENRYETTA...                      WELEETKA...
DEWAR...                          SCHULTER...
BEARDEN...                        CASTLE...
CLEARVIEW...                      PHAROAH...
OKMULGEE STATE PARK...            BRYANT...

THIS INCLUDES INTERSTATE 40 IN OKLAHOMA BETWEEN MILE MARKERS 212 AND
240.

LAT...LON 3548 9648 3567 9605 3570 9584 3538 9595
      3537 9598 3529 9598 3529 9644 3546 9644
      3546 9647 3545 9649 3544 9648 3543 9650
TIME...MOT...LOC 2351Z 233DEG 4KT 3563 9595 3550 9614 3540 9643

69
Local storm report, Jul 27, 7:03 PM CDT, 31 minutes before
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Local storm report, Jul 27, 7:16 PM CDT, 18 minutes before
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Special weather statement, Jul 27, 7:34 PM CDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 28, 2:13 PM CDTSpecial Weather StatementTSAMayes32 min
Jul 28, 2:16 PM CDTSpecial Weather StatementTSAOsage29 min
Jul 28, 2:47 PM CDTSpecial Weather StatementTSAOsage28 min
Jul 28, 3:10 PM CDTSpecial Weather StatementTSAOsage35 min
Jul 28, 4:39 PM CDTSpecial Weather StatementTSAKay51 min
Jul 28, 5:23 PM CDTSpecial Weather StatementTSATulsa37 min
Jul 28, 5:29 PM CDTSevere Thunderstorm WarningTSATulsa31 min
Jul 28, 5:39 PM CDTAreal Flood AdvisoryTSACreek, Tulsa2 hr
Jul 28, 5:47 PM CDTSevere Thunderstorm WarningTSATulsa28 min
Jul 28, 5:51 PM CDTSevere Thunderstorm WarningTSACreek, Tulsa24 min
Jul 28, 6:08 PM CDTSevere Thunderstorm WarningTSACreek, Tulsa, Wagoner37 min
Jul 28, 6:17 PM CDTSpecial Weather StatementTSAMuskogee28 min
Jul 28, 6:38 PM CDTSpecial Weather StatementTSAOkmulgee37 min
Jul 28, 6:40 PM CDTSpecial Weather StatementTSAWagoner35 min
Jul 28, 6:47 PM CDTSpecial Weather StatementTSAMuskogee28 min
Jul 27, 7:08 PM CDTSevere Thunderstorm WarningTSABenton, Washington37 min
Jul 27, 7:41 PM CDTSpecial Weather StatementTSAMadison34 min
Jul 28, 5:11 PM CDTSpecial Weather StatementTSACarroll34 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.