Alert archive / Arkansas / Special Weather Statements in 2018

Special Weather Statement, NWS Tulsa, OK

March 4, 2018Crawford County, Arkansas

NWS Tulsa, OK issued this special weather statement at Mar 4, 2018, 8:44 PM CST for Crawford County, Arkansas. It was in force for 46 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: Mar 4, 2018, 8:44 PM CST (02:44 UTC)
Expired: Mar 4, 2018, 9:30 PM CST
In force: 46 min
Issued by: NWS Tulsa, OK

County Crawford County, AR

The radar

The Western Arkansas radar (KSRX), 49 km from the middle of the area, began a volume at 02:47 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 00:00Z, 2.7 hours before the alert went out and 294 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 653 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 330 m²/s²
0-3 km storm-relative helicity: 368 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.1

Open this sounding in Storm Lab

The text

As transmitted.

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 4, 7:58 PM CST	Special Weather Statement	TSA	Ottawa	32 min
Mar 5, 3:29 AM CST	Red Flag Warning	TSA	Craig, Creek, Mayes, Nowata, Okfuskee, Okmulgee and 6 more	15 hr
Mar 5, 3:53 PM CST	Wind Advisory	TSA	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 12 more	26 hr
Mar 5, 4:06 PM CST	Fire Weather Watch	TSA	Haskell, Latimer, Pittsburg	12 hr
Mar 5, 4:06 PM CST	Red Flag Warning	TSA	Adair, Cherokee, Choctaw, Craig, Creek, Delaware and 16 more	26 hr

Nearby

Special Weather Statements in Arkansas, 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.