Alert archive / Arkansas / Tornado Watches in 2006

Tornado Watch 157

April 6, 200630 counties in Arkansas

The Storm Prediction Center issued this tornado watch at Apr 6, 2006, 4:41 PM CDT for 30 counties in Arkansas. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
Apr 6, 2006, 4:41 PM CDT (21:41 UTC)
Expired
Apr 6, 2006, 11:37 PM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 30 counties

Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Cleburne County, AR, Conway County, AR, Crawford County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Independence County, AR, Izard County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Searcy County, AR, Sebastian County, AR, Sharp County, AR, Stone County, AR, Van Buren County, AR, Washington County, AR, White County, AR, Yell County, AR

The radar

The Western Arkansas radar (KSRX), 112 km from the middle of the area, began a volume at 21:41 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.

Warnings issued inside it

17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Apr 6, 4:59 PM CDTSevere Thunderstorm WarningTSAFranklin, Madison, Washington43 min
Apr 6, 5:25 PM CDTSevere Thunderstorm WarningTSACarroll34 min
Apr 6, 8:10 PM CDTSevere Thunderstorm WarningTSAWashington64 min
Apr 6, 8:14 PM CDTTornado WarningTSACrawford46 min
Apr 6, 8:42 PM CDTSevere Thunderstorm WarningTSASebastian63 min
Apr 6, 8:49 PM CDTSevere Thunderstorm WarningTSAFranklin, Madison71 min
Apr 6, 8:58 PM CDTSevere Thunderstorm WarningTSACrawford27 min
Apr 6, 9:01 PM CDTTornado WarningTSASebastian29 min
Apr 6, 9:12 PM CDTSevere Thunderstorm WarningLZKScott63 min
Apr 6, 9:25 PM CDTSevere Thunderstorm WarningLZKJohnson, Logan50 min
Apr 6, 9:31 PM CDTSevere Thunderstorm WarningLZKBoone, Newton44 min
Apr 6, 9:51 PM CDTTornado WarningLZKBoone, Newton30 min
Apr 6, 10:02 PM CDTSevere Thunderstorm WarningLZKLogan, Yell43 min
Apr 6, 10:15 PM CDTSevere Thunderstorm WarningLZKMarion30 min
Apr 6, 10:22 PM CDTSevere Thunderstorm WarningLZKPope, Van Buren38 min
Apr 6, 10:31 PM CDTSevere Thunderstorm WarningLZKConway, Pope, Yell44 min
Apr 6, 11:02 PM CDTSevere Thunderstorm WarningLZKVan Buren43 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Springfield, MO (KSGF), launched 12:00Z, 9.7 hours before the alert went out and 125 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, Springfield, MO at 12:00Z on 2006-04-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 293 joules per kilogram.LCLLFCEL10008507005003002001001 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, Springfield, MO at 12:00Z on 2006-04-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 378 square meters per square second.19395878Sfc1 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
293 J/kg
Mixed-layer CIN
-508 J/kg
Mixed-layer LCL
1046 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
378 m²/s²
0-3 km storm-relative helicity
394 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 6, 11:03 AM CDTMesoscale DiscussionSPCBenton, Boone, Carroll, Crawford, Franklin, Garland and 17 more117 min
Apr 6, 12:12 PM CDTSevere Thunderstorm WatchSPCBaxter, Boone, Carroll, Cleburne, Conway, Franklin and 15 more4 hr
Apr 6, 3:29 PM CDTMesoscale DiscussionSPCBaxter, Cleburne, Conway, Fulton, Independence, Izard and 6 more91 min
Apr 6, 4:21 PM CDTMesoscale DiscussionSPCBaxter, Benton, Boone, Carroll, Cleburne, Conway and 24 more84 min

Nearby

Tornado Watches in Arkansas, 2006Every tornado watch in 2006

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.