Alert archive / Arkansas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 301, NWS Little Rock, AR

July 20, 2015Baxter County, Fulton County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Jul 20, 2015, 8:04 PM CDT for Baxter County, Fulton County, Arkansas. It was in force for 26 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: Jul 20, 2015, 8:04 PM CDT (01:04 UTC)
Expired: Jul 20, 2015, 8:30 PM CDT
In force: 26 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Baxter County, AR, Fulton County, AR

The radar

The Springfield radar (KSGF), 155 km from the middle of the area, began a volume at 01:07 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

Topeka, KS (KFOE), launched 00:00Z, 1.1 hours before the alert went out and 431 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: 1564 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1231 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 3 m²/s²
0-3 km storm-relative helicity: 49 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm 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 severe thunderstorm warning went out at Jul 20, 2:58 PM CDT, 5 hours 6 minutes earlier.

Area forecast discussion, Jul 20, 2:58 PM CDT, 5 hours 6 minutes before

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Hazardous weather outlook, Jul 20, 7:28 PM CDT, 36 minutes before

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In the hours before

Special weather statement, Jul 20, 6:49 PM CDT, 1 hour 15 minutes before

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Special weather statement, Jul 20, 7:39 PM CDT, 25 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
Jul 20, 7:39 PM CDT	Special Weather Statement	LZK	Baxter	51 min
Jul 20, 8:26 PM CDT	Special Weather Statement	LZK	Fulton	49 min
Jul 20, 8:29 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Izard, Sharp	31 min
Jul 20, 9:11 PM CDT	Special Weather Statement	LZK	Stone	34 min
Jul 20, 10:30 PM CDT	Special Weather Statement	LZK	Jackson	45 min
Jul 20, 10:51 PM CDT	Special Weather Statement	LZK	Conway	39 min
Jul 20, 10:52 PM CDT	Special Weather Statement	LZK	Faulkner	53 min
Jul 20, 11:11 PM CDT	Special Weather Statement	LZK	Pope	34 min
Jul 21, 12:27 AM CDT	Special Weather Statement	LZK	Perry	48 min
Jul 21, 3:33 PM CDT	Special Weather Statement	LZK	Grant	27 min
Jul 21, 5:39 PM CDT	Flash Flood Warning	LZK	Baxter, Marion	4 hr
Jul 21, 6:20 PM CDT	Special Weather Statement	LZK	Searcy	40 min
Jul 21, 6:27 PM CDT	Special Weather Statement	LZK	Izard	48 min
Jul 21, 6:41 PM CDT	Special Weather Statement	LZK	Independence	49 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2015 Every severe thunderstorm warning in 2015

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.