Alert archive / Oklahoma / Special Weather Statements in 2018

Special Weather Statement, NWS Tulsa, OK

August 14, 2018Pawnee County, Oklahoma

NWS Tulsa, OK issued this special weather statement at Aug 14, 2018, 4:15 PM CDT for Pawnee 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: Aug 14, 2018, 4:15 PM CDT (21:15 UTC)
Expired: Aug 14, 2018, 4:45 PM CDT
In force: 30 min
Issued by: NWS Tulsa, OK

County Pawnee County, OK

The radar

The Tulsa radar (KINX), 86 km from the middle of the area, began a volume at 21:19 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, 9.3 hours before the alert went out and 144 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: 1130 J/kg
Mixed-layer CIN: -13 J/kg
Mixed-layer LCL: 737 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 59 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.4

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 14, 4:15 PM CDT, 0 minutes earlier.

Area forecast discussion, Aug 14, 4:15 PM CDT, 0 minutes before

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Hazardous weather outlook, Aug 14, 12:54 PM CDT, 3 hours 21 minutes before

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In the hours before

Special weather statement, Aug 14, 4:15 PM CDT, 0 minutes before

Special Weather Statement
National Weather Service Tulsa OK
415 PM CDT TUE AUG 14 2018

OKZ059-142145-
Pawnee OK-
415 PM CDT TUE AUG 14 2018

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN PAWNEE COUNTY UNTIL
445 PM CDT...

At 415 PM CDT, a strong thunderstorm was located near Maramec, moving
northeast at 25 mph.

Dime size hail and wind gusts up to 50 mph will be possible with this
storm.

Locations in or near the path include...
Cleveland...                      Jennings...
Westport...                       Hallett...
Terlton...                        Maramec...

LAT...LON 3640 9654 3639 9652 3637 9652 3633 9657
      3632 9657 3630 9656 3630 9652 3633 9649
      3633 9646 3628 9642 3627 9639 3623 9633
      3623 9628 3616 9647 3616 9673 3624 9679
TIME...MOT...LOC 2115Z 237DEG 21KT 3621 9666

Lacy

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 7:01 PM CDT	Special Weather Statement	TSA	Pushmataha	29 min
Aug 13, 7:07 PM CDT	Special Weather Statement	TSA	Choctaw	23 min
Aug 13, 7:38 PM CDT	Special Weather Statement	TSA	LeFlore, Sequoyah	37 min
Aug 13, 7:54 PM CDT	Special Weather Statement	TSA	Pushmataha	36 min
Aug 13, 8:12 PM CDT	Special Weather Statement	TSA	Sequoyah	48 min
Aug 14, 3:59 AM CDT	Areal Flood Advisory	TSA	LeFlore, Sequoyah	3 hr

Nearby

Special Weather Statements in Oklahoma, 2018 Every 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.