Alert archive / Arkansas / Tornado Watches in 2006
Tornado Watch 65
The Storm Prediction Center issued this tornado watch at Mar 11, 2006, 9:34 PM CST for 14 counties in Arkansas; McCurtain County, Oklahoma. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 11, 2006, 9:34 PM CST (03:34 UTC)
- Expired
- Mar 12, 2006, 1:12 AM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
Counties Conway County, AR, Garland County, AR, Howard County, AR, Johnson County, AR, Logan County, AR, Montgomery County, AR, Perry County, AR, Pike County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Sevier County, AR, Van Buren County, AR, Yell County, AR, McCurtain County, OK
The radar
The Western Arkansas radar (KSRX), 75 km from the middle of the area, began a volume at 03:34 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
5 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 9:45 PM CST | Severe Thunderstorm Warning | LZK | Scott | 60 min |
| Mar 11, 9:54 PM CST | Tornado Warning | LZK | Johnson | 36 min |
| Mar 11, 10:29 PM CST | Severe Thunderstorm Warning | LZK | Logan | 46 min |
| Mar 11, 10:45 PM CST | Severe Thunderstorm Warning | LZK | Logan, Scott, Yell | 45 min |
| Mar 11, 10:49 PM CST | Severe Thunderstorm Warning | LZK | Johnson | 56 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
Shreveport, LA (KSHV), launched 00:00Z, 3.6 hours before the alert went out and 276 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.
- Mixed-layer CAPE
- 1456 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1432 m above ground
- 0-6 km bulk shear
- 50 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.3
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 120332
SEL5
SPC WW 120332
ARZ000-OKZ000-121000-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 65
NWS STORM PREDICTION CENTER NORMAN OK
935 PM CST SAT MAR 11 2006
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WESTERN ARKANSAS
EXTREME SOUTHEAST OKLAHOMA
EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 935 PM UNTIL
400 AM CST.
TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE MILES
EAST AND WEST OF A LINE FROM 30 MILES NORTH NORTHEAST OF
RUSSELLVILLE ARKANSAS TO 10 MILES SOUTH SOUTHEAST OF DE QUEEN
ARKANSAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA.
PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING
WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE
WARNINGS.
OTHER WATCH INFORMATION...CONTINUE...WW 63...WW 64...
DISCUSSION...LINE OF STRONG/SEVERE THUNDERSTORMS AS DEVELOPED FROM
SOUTHEAST OK INTO WESTERN AR. THESE STORMS WILL LIKELY REMAIN
INTENSE FOR SEVERAL MORE HOURS...SPREADING EASTWARD. SUPERCELLS
CAPABLE OF LARGE HAIL WILL BE THE MAIN THREAT.
HOWEVER...STRENGTHENING LOW LEVEL JET WILL INCREASE THE POTENTIAL
FOR ISOLATED TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24035.
...HARTSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 11, 6:11 PM CST | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Fulton, Marion, Washington | 2 hr |
| Mar 11, 6:49 PM CST | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 10 more | 7 hr |
| Mar 11, 7:48 PM CST | Mesoscale Discussion | SPC | Polk, Scott, Sebastian, Sevier | 87 min |
| Mar 11, 11:13 PM CST | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 25 more | 92 min |
| Mar 12, 1:07 AM CST | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Fulton, Izard and 6 more | 7 hr |
| Mar 12, 3:39 AM CST | Mesoscale Discussion | SPC | Baxter, Benton, Boone, Carroll, Clay, Crawford and 17 more | 96 min |
| Mar 12, 12:46 PM CST | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 24 more | 9 hr |
| Mar 12, 3:38 PM CST | Mesoscale Discussion | SPC | Benton, Crawford, Franklin, Madison, Polk, Scott and 2 more | 2 hr |
| Mar 12, 11:29 AM CST | Mesoscale Discussion | SPC | Adair, Cherokee, Coal, Craig, Creek, Delaware and 24 more | 2 hr |
Nearby
Tornado Watches in Arkansas, 2006Tornado Watches in Oklahoma, 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.