Alert archive / Oklahoma / Special Weather Statements in 2018

Special Weather Statement, NWS Tulsa, OK

July 5, 2018Okmulgee County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Jul 5, 2018, 4:45 PM CDT for Okmulgee County, Oklahoma. It was in force for 30 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 5, 2018, 4:45 PM CDT (21:45 UTC)
Expired
Jul 5, 2018, 5:15 PM CDT
In force
30 min
Issued by
NWS Tulsa, OK

County Okmulgee County, OK

The radar

The Tulsa radar (KINX), 86 km from the middle of the area, began a volume at 21:47 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, 9.8 hours before the alert went out and 134 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 2018-07-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 931 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 2018-07-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -21 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
931 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
957 m above ground
0-6 km bulk shear
3 kt
0-1 km storm-relative helicity
-21 m²/s²
0-3 km storm-relative helicity
24 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 5, 2:28 PM CDT, 2 hours 17 minutes earlier.

Area forecast discussion, Jul 5, 2:28 PM CDT, 2 hours 17 minutes before
Area Forecast Discussion
National Weather Service Tulsa OK
228 PM CDT Thu Jul 5 2018

.DISCUSSION...
Scattered showers/thunderstorms continue this afternoon across
SE OK and west-central Arkansas in association with westward
moving upper wave in combination with moist/unstable air-mass.
Gusty winds in the 40 to 50 mph range will be possible in the
stronger cells. Thunderstorm activity will likely begin to
dissipate by early evening with loss of surface heating. Otherwise,
hot and humid conditions will continue for the remainder of the
afternoon with heat indices in the 100-105 degree range.

Hot/humid weather will persist on Friday ahead of frontal boundary,
which will move through during the day. Scattered showers and
thunderstorms will again be possible, especially across southeast
Oklahoma in the deeper moisture. Finally some relief from the
heat and humidity expected for the weekend with drier air moving
into the region behind the front Saturday into Sunday.

Upper high begins to build back over the central plains into the
early part of the work week. Precipitation chances will begin to
return, especially across southeast Oklahoma, as a series of weak
upper waves move westward around southerly periphery of upper
ridge. High temperatures will remain around normal for the remainder
of the extended periods.

&&

.PRELIMINARY POINT TEMPS/POPS...
TUL   76  94  71  92 /  10  20  10   0
FSM   76  93  73  92 /  20  30  20  10
MLC   73  94  72  90 /  20  30  20  10
BVO   72  92  66  90 /  10  20  10   0
FYV   71  90  62  86 /  20  30  10  10
BYV   72  92  64  86 /  20  30  10  10
MKO   75  93  72  91 /  20  30  10   0
MIO   74  93  66  89 /  10  20  10   0
F10   74  94  72  89 /  20  30  10   0
HHW   75  95  73  92 /  20  30  20  20

&&

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

LONG TERM....12
Hazardous weather outlook, Jul 5, 4:15 PM CDT, 30 minutes before
Hazardous Weather Outlook
National Weather Service Tulsa OK
415 PM CDT Thu Jul 5 2018

ARZ001-002-010-011-019-020-029-OKZ049-053>076-061015-
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-
415 PM CDT Thu Jul 5 2018

This Outlook is for Northwest and West Central Arkansas as well as
much of Eastern Oklahoma.

.DAY ONE...This Afternoon and Tonight.

SEVERE THUNDERSTORMS.
	RISK...Limited.
	AREA...Southeast Oklahoma and Northwest Arkansas.
	ONSET...Ongoing.

DANGEROUS HEAT.
	RISK...Limited.
	AREA...Eastern Oklahoma and West Central Arkansas.
	ONSET...Ongoing.

DISCUSSION...

Scattered thunderstorms across southeast Oklahoma and northwest
Arkansas will produce strong to marginally severe wind gusts thru
early evening. Storm coverage is expected to diminish after sunset.

Outside of thunderstorm influence, heat index values will rise into
the 100 to 105 degree range across much of eastern Oklahoma and west
central Arkansas.

SPOTTER AND EMERGENCY MANAGEMENT ACTION STATEMENT...
Spotter Activation Not Expected.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.
FRIDAY...Thunderstorm Potential.
SATURDAY and SUNDAY...No Hazards.
MONDAY through WEDNESDAY...Thunderstorm Potential.

EXTENDED DISCUSSION...
A weak cold front will move into the area on Friday bringing
a chance of thunderstorms.  Drier and slightly cooler conditions
will follow the front over the weekend.  Thunderstorm chances
return early next week as a more humid airmass spreads back
across the region.

weather.gov/tulsa contains additional information.

Lacy

In the hours before

Special weather statement, Jul 5, 3:52 PM CDT, 53 minutes before
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Special weather statement, Jul 5, 4:14 PM CDT, 31 minutes before
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Special weather statement, Jul 5, 4:16 PM CDT, 29 minutes before
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Special weather statement, Jul 5, 4:22 PM CDT, 23 minutes before
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Special weather statement, Jul 5, 4:32 PM CDT, 13 minutes before
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Special weather statement, Jul 5, 4:45 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 5, 2:21 PM CDTSpecial Weather StatementTSASequoyah24 min
Jul 5, 2:47 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer, LeFlore43 min
Jul 5, 3:19 PM CDTSevere Thunderstorm WarningTSAHaskell, Latimer19 min
Jul 5, 3:46 PM CDTSpecial Weather StatementTSALeFlore29 min
Jul 5, 3:52 PM CDTSpecial Weather StatementTSAPittsburg38 min
Jul 5, 4:14 PM CDTSpecial Weather StatementTSALeFlore31 min
Jul 5, 4:16 PM CDTSpecial Weather StatementTSAPittsburg29 min
Jul 5, 4:32 PM CDTSpecial Weather StatementTSAPushmataha43 min
Jul 5, 5:00 PM CDTSpecial Weather StatementTSAMuskogee30 min
Jul 5, 5:12 PM CDTSpecial Weather StatementTSAPushmataha33 min
Jul 5, 6:11 PM CDTSpecial Weather StatementTSAOkmulgee34 min
Jul 5, 6:35 PM CDTSpecial Weather StatementTSAAdair25 min
Jul 5, 2:42 PM CDTSpecial Weather StatementTSASebastian33 min
Jul 5, 3:03 PM CDTSpecial Weather StatementTSASebastian27 min
Jul 5, 3:12 PM CDTSpecial Weather StatementTSAFranklin33 min
Jul 5, 3:25 PM CDTSpecial Weather StatementTSASebastian35 min
Jul 5, 3:29 PM CDTSpecial Weather StatementTSACrawford, Franklin31 min
Jul 5, 4:22 PM CDTSpecial Weather StatementTSACrawford23 min
Jul 5, 5:14 PM CDTSpecial Weather StatementTSAMadison31 min

Nearby

Special Weather Statements in Oklahoma, 2018Every special weather statement in 2018

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.