Alert archive / Arkansas / Tornado Warnings in 2010

Tornado Warning 75, NWS Little Rock, AR

May 13, 2010Boone County, Newton County, Arkansas

NWS Little Rock, AR issued this tornado warning at May 13, 2010, 3:03 PM CDT for Boone County, Newton County, Arkansas. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 13, 2010, 3:03 PM CDT (20:03 UTC)
Expired: May 13, 2010, 3:45 PM CDT
In force: 42 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Boone County, AR, Newton County, AR

The radar

The Springfield radar (KSGF), 127 km from the middle of the area, began a volume at 20:02 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
May 13, 2:33 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 8.1 hours before the alert went out and 105 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: 139 J/kg
Mixed-layer CIN: -135 J/kg
Mixed-layer LCL: 570 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 259 m²/s²
0-3 km storm-relative helicity: 313 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 10.4

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Little Rock, AR wrote its last area forecast discussion before this tornado warning went out at May 13, 12:52 PM CDT, 2 hours 11 minutes earlier.

Area forecast discussion, May 13, 12:52 PM CDT, 2 hours 11 minutes before

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Hazardous weather outlook, May 13, 11:35 AM CDT, 3 hours 28 minutes before

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The office that day

Everything else NWS Little Rock, AR issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 13, 2:36 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Johnson, Newton	54 min
May 13, 3:29 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Marion	46 min
May 13, 4:41 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Fulton, Marion	49 min

Nearby

Tornado Warnings in Arkansas, 2010 Every tornado warning in 2010 Tornadoes in 2010

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.