Alert archive / Arkansas / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 463, NWS Little Rock, AR

May 22, 2011Boone County, Marion County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at May 22, 2011, 8:45 PM CDT for Boone County, Marion County, Arkansas. It was in force for 30 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 22, 2011, 8:45 PM CDT (01:45 UTC)
Expired: May 22, 2011, 9:15 PM CDT
In force: 30 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Boone County, AR, Marion County, AR

The radar

The Springfield radar (KSGF), 115 km from the middle of the area, began a volume at 01:45 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 22, 3:24 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Springfield, MO (KSGF), launched 00:00Z, 1.8 hours before the alert went out and 106 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: 3961 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 641 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 183 m²/s²
0-3 km storm-relative helicity: 180 m²/s²
Significant tornado parameter: 3.7
Supercell composite: 15.9

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 May 22, 6:51 PM CDT, 1 hour 54 minutes earlier.

Area forecast discussion, May 22, 6:51 PM CDT, 1 hour 54 minutes before

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Hazardous weather outlook, May 22, 4:30 PM CDT, 4 hours 15 minutes before

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In the hours before

Special weather statement, May 22, 4:47 PM CDT, 3 hours 58 minutes before

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Special weather statement, May 22, 5:08 PM CDT, 3 hours 37 minutes before

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Local storm report, May 22, 5:19 PM CDT, 3 hours 26 minutes before

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Local storm report, May 22, 7:12 PM CDT, 1 hour 33 minutes before

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Special weather statement, May 22, 7:51 PM CDT, 54 minutes before

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Special weather statement, May 22, 8:31 PM CDT, 14 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 22, 7:08 PM CDT	Severe Thunderstorm Warning	LZK	Fulton, Izard, Sharp	37 min
May 22, 7:51 PM CDT	Special Weather Statement	LZK	Sharp	44 min
May 22, 8:30 PM CDT	Flash Flood Watch	LZK	Baxter, Cleburne, Conway, Faulkner, Fulton, Independence and 8 more	59 hr
May 22, 8:31 PM CDT	Special Weather Statement	LZK	Boone, Marion	44 min
May 22, 9:00 PM CDT	Severe Thunderstorm Warning	LZK	Boone	30 min
May 22, 9:14 PM CDT	Flash Flood Warning	LZK	Baxter, Boone, Marion	3 hr
May 22, 9:47 PM CDT	Special Weather Statement	LZK	Boone	28 min
May 22, 10:01 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Marion	29 min
May 22, 10:09 PM CDT	Special Weather Statement	LZK	Scott	46 min
May 22, 10:20 PM CDT	Severe Thunderstorm Warning	LZK	Logan, Scott, Yell	26 min
May 22, 10:22 PM CDT	Special Weather Statement	LZK	Newton, Searcy, Stone	48 min
May 22, 10:37 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Izard, Marion, Searcy, Sharp, Stone	53 min
May 22, 11:30 PM CDT	Special Weather Statement	LZK	Independence, Sharp, Stone	45 min
May 22, 11:52 PM CDT	Severe Thunderstorm Warning	LZK	Jackson, White, Woodruff	23 min
May 22, 11:58 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Jackson, Sharp, Stone	47 min
May 23, 12:07 AM CDT	Severe Thunderstorm Warning	LZK	Monroe, Woodruff	23 min
May 23, 12:11 AM CDT	Severe Thunderstorm Warning	LZK	Boone, Marion	31 min
May 23, 12:45 AM CDT	Special Weather Statement	LZK	Baxter, Marion	45 min
May 23, 12:55 AM CDT	Special Weather Statement	LZK	Izard, Sharp	45 min
May 23, 8:47 AM CDT	River Flood Warning	LZK	Calhoun, Ouachita	5 days
May 23, 8:47 AM CDT	River Flood Warning	LZK	Bradley, Calhoun, Union	15 days
May 23, 9:40 AM CDT	River Flood Advisory	LZK	Randolph	36 hr
May 23, 12:38 PM CDT	Severe Thunderstorm Warning	LZK	Baxter, Marion	37 min
May 23, 12:57 PM CDT	Tornado Warning	LZK	Baxter, Fulton	33 min
May 23, 1:19 PM CDT	Tornado Warning	LZK	Baxter, Fulton, Izard	41 min
May 23, 1:30 PM CDT	Special Weather Statement	LZK	Baxter	30 min
May 23, 1:47 PM CDT	Tornado Warning	LZK	Fulton, Izard, Sharp	43 min
May 23, 3:06 PM CDT	River Flood Warning	LZK	Fulton, Sharp	19 hr
May 23, 3:06 PM CDT	River Flood Warning	LZK	Lawrence, Randolph	19 hr
May 23, 3:07 PM CDT	River Flood Warning	LZK	Izard, Stone	4 days
May 23, 3:07 PM CDT	River Flood Warning	LZK	Independence	7 days
May 23, 3:08 PM CDT	River Flood Warning	LZK	Randolph	19 hr
May 23, 3:09 PM CDT	Severe Thunderstorm Warning	LZK	Boone, Newton	51 min
May 23, 3:48 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Newton	42 min
May 23, 3:54 PM CDT	Severe Thunderstorm Warning	LZK	Marion, Newton, Searcy	15 min
May 23, 4:03 PM CDT	Severe Thunderstorm Warning	LZK	Johnson	57 min
May 23, 4:23 PM CDT	Special Weather Statement	LZK	Conway, Van Buren	47 min
May 23, 4:28 PM CDT	Special Weather Statement	LZK	White	47 min
May 23, 4:28 PM CDT	Severe Thunderstorm Warning	LZK	Johnson, Newton, Pope	47 min
May 23, 5:14 PM CDT	Special Weather Statement	LZK	Pope, Searcy	46 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2011 Every severe thunderstorm warning 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.