Alert archive / Arkansas / Special Weather Statements in 2016

Special Weather Statement, NWS Tulsa, OK

July 28, 2016Sebastian County, Arkansas

NWS Tulsa, OK issued this special weather statement at Jul 28, 2016, 7:46 PM CDT for Sebastian County, Arkansas. It was in force for 29 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 28, 2016, 7:46 PM CDT (00:46 UTC)
Expired: Jul 28, 2016, 8:15 PM CDT
In force: 29 min
Issued by: NWS Tulsa, OK

County Sebastian County, AR

The radar

The Western Arkansas radar (KSRX), 14 km from the middle of the area, began a volume at 00:46 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, 0.8 hours before the alert went out and 262 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: 2670 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1440 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: 95 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 28, 6:44 PM CDT, 1 hour 2 minutes earlier.

Area forecast discussion, Jul 28, 6:44 PM CDT, 1 hour 2 minutes before

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Hazardous weather outlook, Jul 28, 1:04 PM CDT, 6 hours 42 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE TULSA OK
104 PM CDT THU JUL 28 2016

ARZ001-002-010-011-019-020-029-OKZ049-053>076-291000-
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-
104 PM CDT THU JUL 28 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...NORTHEAST OKLAHOMA AND NORTHWEST ARKANSAS.
	ONSET...ONGOING.

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

DISCUSSION...
SCATTERED THUNDERSTORMS WILL OCCUR THIS AFTERNOON...WITH THE
GREATEST STORM COVERAGE AND INTENSITY ACROSS NORTHEAST OKLAHOMA
AND NORTHWEST ARKANSAS. ONE OR TWO OF THESE STORMS MAY BREIFLY
BECOME SEVERE...WITH DAMAGING WINDS TO NEAR 60 MILES AN HOUR
POSSIBLE.

A THUNDERSTORM COMPLEX IS EXPECTED TO DEVELOP WELL TO OUR
NORTHWEST THIS AFTERNOON AND EVENING. THIS STORM COMPLEX WILL MOVE
SOUTHEAST AND ENTER NORTHEAST OKLAHOMA LATE TONIGHT. THE COMPLEX
WILL LIKELY BE ON A WEAKENING TREND BY THE TIME IT ARRIVES...BUT
SOME POTENTIAL WILL EXIST FOR DAMAGING WINDS TO AROUND 60 MILES AN
HOUR ACROSS PARTS OF NORTHEAST OKLAHOMA LATE TONIGHT.

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

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.
FRIDAY...THUNDERSTORM POTENTIAL.
SATURDAY...THUNDERSTORM POTENTIAL...DANGEROUS HEAT POTENTIAL.
SUNDAY...THUNDERSTORM POTENTIAL.
MONDAY THROUGH WEDNESDAY...DANGEROUS HEAT POTENTIAL.

EXTENDED DISCUSSION...
SHOWERS AND THUNDERSTORMS ARE EXPECTED TO BE ONGOING FRIDAY
MORNING ACROSS PARTS OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS AS
THE THUNDERSTORM COMPLEX WEAKENS OVER THE REGION. ADDITIONAL
THUNDERSTORM COMPLEXES WILL BE POSSIBLE FRIDAY NIGHT INTO SATURDAY
AND POSSIBLY SATURDAY NIGHT AS WELL AS UPPER LEVEL NORTHWESTERLY
FLOW CONTINUES OVER THE PLAINS.

A RIDGE OF HIGH PRESSURE IS FORECAST TO BUILD BACK OVER THE
SOUTHERN PLAINS NEXT WEEK. THIS WILL ALLOW FOR A RETURN OF HOT AND
HUMID CONDITIONS ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS.

WWW.WEATHER.GOV/TULSA CONTAINS ADDITIONAL INFORMATION.

In the hours before

Local storm report, Jul 28, 6:12 PM CDT, 1 hour 34 minutes before

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Special weather statement, Jul 28, 6:17 PM CDT, 1 hour 29 minutes before

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Special weather statement, Jul 28, 6:38 PM CDT, 1 hour 8 minutes before

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Special weather statement, Jul 28, 6:40 PM CDT, 1 hour 6 minutes before

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Special weather statement, Jul 28, 6:47 PM CDT, 59 minutes before

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Special weather statement, Jul 28, 7:46 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 28, 7:57 PM CDT	Special Weather Statement	TSA	LeFlore	33 min
Jul 28, 9:19 PM CDT	Special Weather Statement	TSA	Osage	56 min
Jul 28, 10:21 PM CDT	Special Weather Statement	TSA	Osage	54 min
Jul 28, 11:28 PM CDT	Special Weather Statement	TSA	Nowata, Washington	62 min
Jul 29, 5:12 AM CDT	Special Weather Statement	TSA	Osage, Pawnee	63 min
Jul 29, 7:45 AM CDT	Special Weather Statement	TSA	Muskogee	30 min
Jul 29, 8:35 AM CDT	Special Weather Statement	TSA	Creek, Muskogee, Okmulgee	25 min
Jul 29, 9:03 AM CDT	Special Weather Statement	TSA	Okmulgee	27 min
Jul 29, 12:09 PM CDT	Special Weather Statement	TSA	LeFlore	51 min
Jul 29, 5:02 PM CDT	Special Weather Statement	TSA	Latimer	28 min
Jul 29, 5:07 PM CDT	Special Weather Statement	TSA	LeFlore	23 min
Jul 29, 5:22 PM CDT	Special Weather Statement	TSA	LeFlore	38 min
Jul 29, 5:30 PM CDT	Special Weather Statement	TSA	Pushmataha	30 min
Jul 29, 6:04 PM CDT	Special Weather Statement	TSA	LeFlore	26 min
Jul 29, 6:18 PM CDT	Special Weather Statement	TSA	Latimer	42 min
Jul 29, 6:33 PM CDT	Special Weather Statement	TSA	LeFlore	42 min

Nearby

Special Weather Statements in Arkansas, 2016 Every 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.