Alert archive / Arkansas / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 85, NWS Little Rock, AR

April 27, 2009Baxter County, Marion County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Apr 27, 2009, 8:32 PM CDT for Baxter County, Marion County, Arkansas. It was in force for 43 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: Apr 27, 2009, 8:32 PM CDT (01:32 UTC)
Expired: Apr 27, 2009, 9:15 PM CDT
In force: 43 min
Issued by: NWS Little Rock, AR
Area: Storm-based polygon

Counties Baxter County, AR, Marion County, AR

The radar

The Springfield radar (KSGF), 133 km from the middle of the area, began a volume at 01:35 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, 1.5 hours before the alert went out and 134 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: 216 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 631 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 127 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.7

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 Apr 27, 7:23 PM CDT, 1 hour 9 minutes earlier.

Area forecast discussion, Apr 27, 7:23 PM CDT, 1 hour 9 minutes before

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Hazardous weather outlook, Apr 27, 2:18 PM CDT, 6 hours 14 minutes before

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In the hours before

Special weather statement, Apr 27, 6:13 PM CDT, 2 hours 19 minutes before

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Local storm report, Apr 27, 6:49 PM CDT, 1 hour 43 minutes before

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Special weather statement, Apr 27, 7:13 PM CDT, 1 hour 19 minutes before

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Special weather statement, Apr 27, 8:20 PM CDT, 12 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
Apr 27, 9:14 PM CDT	Severe Thunderstorm Warning	LZK	Cleburne, Independence, Izard, Stone	61 min
Apr 27, 10:08 PM CDT	Severe Thunderstorm Warning	LZK	Independence, Izard, Sharp	67 min
Apr 28, 3:48 AM CDT	Areal Flood Advisory	LZK	Cleburne, Conway, Faulkner, Garland, Hot Spring, Independence and 8 more	164 days
Apr 28, 4:42 AM CDT	Areal Flood Advisory	LZK	Cleburne, Independence, Jackson, Prairie, White, Woodruff	2 hr
Apr 28, 5:03 AM CDT	Flash Flood Watch	LZK	Arkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 26 more	10 hr
Apr 28, 5:53 AM CDT	Flash Flood Warning	LZK	Cleburne, Faulkner, Independence, Jackson, Lonoke, Monroe and 5 more	112 min
Apr 28, 7:58 AM CDT	Flash Flood Warning	LZK	Cleburne, Independence, Jackson, Lonoke, Monroe, Prairie and 2 more	3 hr
Apr 28, 10:01 AM CDT	River Flood Warning	LZK	Independence, Jackson, Lawrence	26 days
Apr 28, 10:23 AM CDT	River Flood Warning	LZK	White, Woodruff	39 days
Apr 28, 10:38 AM CDT	River Flood Warning	LZK	Arkansas, Monroe	43 days

Nearby

Severe Thunderstorm Warnings in Arkansas, 2009 Every severe thunderstorm warning in 2009

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.