Alert archive / Arkansas / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 478, NWS Little Rock, AR

December 8, 2012Montgomery County, Arkansas

NWS Little Rock, AR issued this severe thunderstorm warning at Dec 8, 2012, 10:34 PM CST for Montgomery County, Arkansas. It was in force for 25 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
Dec 8, 2012, 10:34 PM CST (04:34 UTC)
Expired
Dec 8, 2012, 10:59 PM CST
In force
25 min
Issued by
NWS Little Rock, AR
Area
Storm-based polygon

County Montgomery County, AR

The radar

The Western Arkansas radar (KSRX), 105 km from the middle of the area, began a volume at 04:33 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

Shreveport, LA (KSHV), launched 00:00Z, 4.6 hours before the alert went out and 229 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-pSkew-T log-p diagram, Shreveport, LA at 00:00Z on 2012-12-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Shreveport, LA at 00:00Z on 2012-12-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 123 square meters per square second.1939587897117Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
0 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
123 m²/s²
0-3 km storm-relative helicity
142 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.7

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 Dec 8, 8:40 PM CST, 1 hour 54 minutes earlier.

Area forecast discussion, Dec 8, 8:40 PM CST, 1 hour 54 minutes before
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Hazardous weather outlook, Dec 8, 6:41 PM CST, 3 hours 53 minutes before
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In the hours before

Special weather statement, Dec 8, 9:59 PM CST, 35 minutes before
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Special weather statement, Dec 8, 10:29 PM CST, 5 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Dec 8, 9:59 PM CSTSpecial Weather StatementLZKMontgomery31 min
Dec 8, 10:29 PM CSTSpecial Weather StatementLZKMontgomery46 min
Dec 8, 11:01 PM CSTSpecial Weather StatementLZKMontgomery44 min
Dec 8, 11:17 PM CSTSpecial Weather StatementLZKIndependence43 min
Dec 8, 11:22 PM CSTSpecial Weather StatementLZKPolk28 min
Dec 8, 11:53 PM CSTSpecial Weather StatementLZKGarland32 min
Dec 9, 12:04 AM CSTSevere Thunderstorm WarningLZKGarland, Hot Spring, Saline26 min
Dec 9, 12:11 AM CSTSpecial Weather StatementLZKFaulkner44 min
Dec 9, 12:12 AM CSTSpecial Weather StatementLZKLonoke48 min
Dec 9, 12:24 AM CSTSevere Thunderstorm WarningLZKGarland, Pulaski, Saline51 min
Dec 9, 12:32 AM CSTSpecial Weather StatementLZKMontgomery33 min
Dec 9, 12:56 AM CSTSpecial Weather StatementLZKWoodruff44 min
Dec 9, 1:03 AM CSTSevere Thunderstorm WarningLZKGarland, Hot Spring, Montgomery, Saline42 min
Dec 9, 1:10 AM CSTSevere Thunderstorm WarningLZKPulaski, Saline35 min
Dec 9, 1:16 AM CSTSevere Thunderstorm WarningLZKPrairie, White, Woodruff44 min
Dec 9, 1:41 AM CSTSpecial Weather StatementLZKPulaski29 min
Dec 9, 1:44 AM CSTSpecial Weather StatementLZKGarland, Saline31 min
Dec 9, 2:12 AM CSTSpecial Weather StatementLZKSaline28 min
Dec 9, 2:41 AM CSTSpecial Weather StatementLZKPulaski29 min
Dec 9, 3:23 AM CSTSpecial Weather StatementLZKLonoke, Prairie32 min
Dec 9, 3:55 AM CSTSpecial Weather StatementLZKPrairie30 min
Dec 9, 5:17 AM CSTSpecial Weather StatementLZKWhite43 min
Dec 9, 7:52 AM CSTSpecial Weather StatementLZKBaxter43 min
Dec 9, 8:01 AM CSTSpecial Weather StatementLZKSharp29 min
Dec 9, 12:48 PM CSTSpecial Weather StatementLZKFulton47 min
Dec 9, 1:41 PM CSTSpecial Weather StatementLZKIzard44 min
Dec 9, 1:46 PM CSTSpecial Weather StatementLZKVan Buren44 min
Dec 9, 2:05 PM CSTSevere Thunderstorm WarningLZKFulton, Izard, Sharp, Stone40 min
Dec 9, 2:12 PM CSTTornado WarningLZKIzard, Sharp48 min
Dec 9, 2:29 PM CSTSevere Thunderstorm WarningLZKCleburne, Van Buren46 min
Dec 9, 2:54 PM CSTTornado WarningLZKSharp36 min
Dec 9, 3:11 PM CSTSpecial Weather StatementLZKCleburne29 min
Dec 9, 3:18 PM CSTSpecial Weather StatementLZKCleburne32 min
Dec 9, 3:21 PM CSTSevere Thunderstorm WarningLZKCleburne, Independence, Stone39 min
Dec 9, 3:31 PM CSTSevere Thunderstorm WarningLZKCleburne29 min
Dec 9, 3:45 PM CSTSevere Thunderstorm WarningLZKIndependence, Sharp45 min
Dec 9, 4:00 PM CSTSpecial Weather StatementLZKFaulkner45 min
Dec 9, 4:01 PM CSTSevere Thunderstorm WarningLZKCleburne, Independence44 min
Dec 9, 4:09 PM CSTSevere Thunderstorm WarningLZKConway, Faulkner19 min
Dec 9, 4:16 PM CSTSevere Thunderstorm WarningLZKIndependence, Jackson44 min
Dec 9, 4:23 PM CSTSevere Thunderstorm WarningLZKCleburne, Faulkner, Van Buren, White37 min
Dec 9, 4:44 PM CSTSevere Thunderstorm WarningLZKIndependence, Jackson31 min
Dec 9, 4:59 PM CSTSpecial Weather StatementLZKFaulkner31 min
Dec 9, 5:08 PM CSTSevere Thunderstorm WarningLZKFaulkner, Pulaski, White22 min
Dec 9, 5:10 PM CSTSpecial Weather StatementLZKJackson30 min
Dec 9, 5:18 PM CSTSpecial Weather StatementLZKSaline47 min
Dec 9, 5:23 PM CSTSevere Thunderstorm WarningLZKGarland, Hot Spring, Saline37 min
Dec 9, 5:27 PM CSTSpecial Weather StatementLZKWhite43 min
Dec 9, 5:46 PM CSTSevere Thunderstorm WarningLZKLonoke, Prairie, White29 min

Nearby

Severe Thunderstorm Warnings in Arkansas, 2012Every severe thunderstorm warning in 2012

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.