Alert archive / Arkansas / Special Weather Statements in 2011

Special Weather Statement, NWS Tulsa, OK

April 4, 2011Crawford County, Franklin County, Arkansas

NWS Tulsa, OK issued this special weather statement at Apr 4, 2011, 4:56 AM CDT for Crawford County, Franklin County, Arkansas. It was in force for 64 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: Apr 4, 2011, 4:56 AM CDT (09:56 UTC)
Expired: Apr 4, 2011, 6:00 AM CDT
In force: 64 min
Issued by: NWS Tulsa, OK

Counties Crawford County, AR, Franklin County, AR

The radar

The Western Arkansas radar (KSRX), 70 km from the middle of the area, began a volume at 09:55 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, 9.9 hours before the alert went out and 133 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: 342 J/kg
Mixed-layer CIN: -476 J/kg
Mixed-layer LCL: 2436 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 263 m²/s²
0-3 km storm-relative helicity: 457 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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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 Apr 4, 3:07 AM CDT, 1 hour 49 minutes earlier.

Area forecast discussion, Apr 4, 3:07 AM CDT, 1 hour 49 minutes before

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Hazardous weather outlook, Apr 4, 4:55 AM CDT, 1 minute before

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In the hours before

Special weather statement, Apr 4, 4:56 AM 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
Apr 3, 10:31 PM CDT	Special Weather Statement	TSA	Osage	44 min
Apr 3, 10:39 PM CDT	Severe Thunderstorm Warning	TSA	Osage	51 min
Apr 3, 11:26 PM CDT	Severe Thunderstorm Warning	TSA	Nowata, Osage, Washington	49 min
Apr 4, 5:12 AM CDT	Special Weather Statement	TSA	Choctaw	63 min
Apr 4, 5:42 AM CDT	Special Weather Statement	TSA	Choctaw	63 min
Apr 4, 3:17 PM CDT	Fire Weather Watch	TSA	Choctaw, Creek, Haskell, Latimer, McIntosh, Muskogee and 10 more	13 hr
Apr 4, 3:59 PM CDT	Freeze Warning	TSA	Adair, Cherokee, Craig, Creek, Delaware, Haskell and 15 more	17 hr
Apr 4, 5:21 AM CDT	Severe Thunderstorm Warning	TSA	Crawford, Franklin, Madison, Sebastian	32 min

Nearby

Special Weather Statements in Arkansas, 2011 Every special weather statement in 2011

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.