Alert archive / Arkansas / Special Weather Statements in 2013

Special Weather Statement, NWS Tulsa, OK

July 20, 2013Benton County, Arkansas

NWS Tulsa, OK issued this special weather statement at Jul 20, 2013, 7:10 PM CDT for Benton County, Arkansas. It was in force for 35 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 20, 2013, 7:10 PM CDT (00:10 UTC)
Expired: Jul 20, 2013, 7:45 PM CDT
In force: 35 min
Issued by: NWS Tulsa, OK

County Benton County, AR

The radar

The Springfield radar (KSGF), 113 km from the middle of the area, began a volume at 00:13 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, 0.2 hours before the alert went out and 63 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: 480 J/kg
Mixed-layer CIN: -102 J/kg
Mixed-layer LCL: 1408 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 88 m²/s²
0-3 km storm-relative helicity: 114 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.6

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 Jul 20, 6:42 PM CDT, 28 minutes earlier.

Area forecast discussion, Jul 20, 6:42 PM CDT, 28 minutes before

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Hazardous weather outlook, Jul 20, 4:55 PM CDT, 2 hours 15 minutes before

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In the hours before

Special weather statement, Jul 20, 2:26 PM CDT, 4 hours 44 minutes before

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Special weather statement, Jul 20, 3:25 PM CDT, 3 hours 45 minutes before

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Special weather statement, Jul 20, 3:36 PM CDT, 3 hours 34 minutes before

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Special weather statement, Jul 20, 4:10 PM CDT, 3 hours before

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Special weather statement, Jul 20, 7:10 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 20, 9:26 PM CDT	Special Weather Statement	TSA	Ottawa	34 min
Jul 20, 10:35 PM CDT	Special Weather Statement	TSA	Craig	40 min
Jul 20, 11:19 PM CDT	Special Weather Statement	TSA	Washington	26 min
Jul 20, 11:23 PM CDT	Areal Flood Advisory	TSA	Craig, Delaware, Mayes, Ottawa, Rogers	2 hr
Jul 20, 11:34 PM CDT	Special Weather Statement	TSA	Washington	41 min
Jul 21, 12:09 AM CDT	Special Weather Statement	TSA	Tulsa	36 min
Jul 21, 3:14 AM CDT	Areal Flood Advisory	TSA	Craig, Mayes, Nowata, Osage, Pawnee, Rogers and 2 more	2 hr
Jul 21, 4:28 AM CDT	Flash Flood Warning	TSA	Osage	4 hr
Jul 21, 8:37 AM CDT	Areal Flood Warning	TSA	Osage	3 hr
Jul 21, 10:58 AM CDT	Areal Flood Warning	TSA	Osage	3 hr

Nearby

Special Weather Statements in Arkansas, 2013 Every special weather statement in 2013

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.