Alert archive / Arkansas / Mesoscale Discussions in 2006
Mesoscale Discussion 2000
The Storm Prediction Center issued this mesoscale discussion at Sep 22, 2006, 4:08 AM CDT for 5 states. It was in force for 67 min.
The area
The outline as issued.
The facts
- Issued
- Sep 22, 2006, 4:08 AM CDT (09:08 UTC)
- Expired
- Sep 22, 2006, 5:15 AM CDT
- In force
- 67 min
- Issued by
- the Storm Prediction Center
All 52 counties
Arkansas County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Lawrence County, AR, Lee County, AR, Lonoke County, AR, Mississippi County, AR, Monroe County, AR, Phillips County, AR, Poinsett County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Fulton County, KY, Butler County, MO, Dunklin County, MO, New Madrid County, MO, Pemiscot County, MO, Ripley County, MO, Stoddard County, MO, Coahoma County, MS, DeSoto County, MS, Marshall County, MS, Quitman County, MS, Tate County, MS, Tunica County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Gibson County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN
The radar
The Memphis radar (KNQA), 88 km from the middle of the area, began a volume at 09:09 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 watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Little Rock, AR (KLZK), launched 00:00Z, 9.1 hours before the alert went out and 114 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1789 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 143 m²/s²
- 0-3 km storm-relative helicity
- 265 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000 ACUS11 KWNS 220908 SWOMCD SPC MCD 220908 TNZ000-KYZ000-MSZ000-MOZ000-ARZ000-221015- MESOSCALE DISCUSSION 2000 NWS STORM PREDICTION CENTER NORMAN OK 0408 AM CDT FRI SEP 22 2006 AREAS AFFECTED...NE AR...AND PARTS OF SE MO...NW MS...WRN TN INTO EXTREME SW KY CONCERNING...SEVERE POTENTIAL...TORNADO WATCH LIKELY 784... VALID 220908Z - 221015Z NEW WW WILL BE ISSUED BY 10Z. IN WAKE OF STRONG SHORT WAVE TROUGH...WHICH IS NOW LIFTING NORTHEAST OF THE MIDDLE MISSISSIPPI VALLEY...MID-LEVEL SUBSIDENCE/WARMING IS SPREADING THROUGH THE LOWER RED RIVER VALLEY AND THE ARKLATEX. THIS IS CAPPING OFF RETURNING TONGUE OF VERY MOIST LOW-LEVEL BOUNDARY LAYER FROM THE WESTERN GULF OF MEXICO...CHARACTERIZED BY 70F+ SURFACE DEW POINTS. WHILE CONVECTIVE DEVELOPMENT HAS BECOME INHIBITED ACROSS MUCH OF EASTERN OKLAHOMA/NORTHEAST TEXAS AND SOUTHWEST ARKANSAS...END TO CONVECTIVE DEVELOPMENT WILL BE SLOWER IN STRONGER LOW-LEVEL WARM ADVECTION REGIME SPREADING ACROSS NORTHEAST ARKANSAS TOWARD THE LOWER OHIO VALLEY. THIS IS ON NORTHERN FRINGE OF RETURNING LOW-LEVEL MOISTURE...WHERE STORMS APPEAR BASED NEAR ENOUGH TO THE SURFACE THAT RISK OF TORNADOES CANNOT BE RULED OUT. LARGE...CLOCKWISE CURVED LOW-LEVEL HODOGRAPHS AND STRONG DEEP LAYER SHEAR WILL PERSIST THROUGH DAYBREAK...BEFORE SLACKING OFF SOME THROUGH MID MORNING. ..KERR.. 09/22/2006 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...PAH...MEG...JAN...LZK...SGF... 36609125 36979012 36628907 35848878 34818925 34219030 34009135 34499241 35289280 36039225
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 7:50 PM CDT | Mesoscale Discussion | SPC | Clark, Franklin, Garland, Hot Spring, Howard, Logan and 7 more | 115 min |
| Sep 21, 7:58 PM CDT | Mesoscale Discussion | SPC | Benton, Madison, Washington | 2 hr |
| Sep 21, 9:30 PM CDT | Tornado Watch | SPC | Arkansas, Clark, Conway, Crawford, Faulkner, Franklin and 24 more | 8 hr |
| Sep 21, 11:25 PM CDT | Mesoscale Discussion | SPC | Clark, Conway, Crawford, Franklin, Garland, Hot Spring and 16 more | 2 hr |
| Sep 22, 4:39 AM CDT | Tornado Watch | SPC | Clay, Cleburne, Craighead, Crittenden, Cross, Fulton and 17 more | 5 hr |
| Sep 22, 8:35 AM CDT | Mesoscale Discussion | SPC | Arkansas, Bradley, Calhoun, Clark, Cleburne, Cleveland and 53 more | 85 min |
| Sep 22, 9:10 AM CDT | Tornado Watch | SPC | Arkansas, Baxter, Boone, Clark, Clay, Cleburne and 46 more | 9 hr |
| Sep 22, 11:10 AM CDT | Mesoscale Discussion | SPC | Benton, Carroll, Crawford, Madison, Sebastian, Washington | 95 min |
| Sep 22, 12:06 PM CDT | Tornado Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 9 hr |
| Sep 22, 12:15 PM CDT | Mesoscale Discussion | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Carroll and 64 more | 90 min |
| Sep 22, 3:00 PM CDT | Mesoscale Discussion | SPC | Arkansas, Baxter, Benton, Boone, Carroll, Clark and 58 more | 90 min |
| Sep 22, 5:58 PM CDT | Mesoscale Discussion | SPC | Clark, Cleburne, Conway, Craighead, Crawford, Cross and 38 more | 92 min |
| Sep 22, 6:29 PM CDT | Tornado Watch | SPC | Baxter, Boone, Clay, Cleburne, Craighead, Fulton and 16 more | 7 hr |
| Sep 22, 2:55 PM CDT | Mesoscale Discussion | SPC | Ballard, Caldwell, Calloway, Carlisle, Crittenden, Fulton and 11 more | 2 hr |
| Sep 22, 3:34 PM CDT | Mesoscale Discussion | SPC | Adair, Anderson, Barren, Boyle, Breckinridge, Bullitt and 31 more | 116 min |
| Sep 22, 3:37 PM CDT | Tornado Watch | SPC | Ballard, Caldwell, Calloway, Carlisle, Christian, Crittenden and 16 more | 8 hr |
| Sep 22, 5:08 PM CDT | Mesoscale Discussion | SPC | Ballard, Caldwell, Carlisle, Christian, Crittenden, Graves and 11 more | 2 hr |
| Sep 22, 1:11 PM CDT | Mesoscale Discussion | SPC | Alcorn, Benton, Calhoun, Chickasaw, Clay, Itawamba and 11 more | 94 min |
| Sep 22, 2:10 PM CDT | Tornado Watch | SPC | Alcorn, Benton, Calhoun, Chickasaw, Itawamba, Lafayette and 9 more | 5 hr |
| Sep 22, 6:15 PM CDT | Mesoscale Discussion | SPC | Benton, Calhoun, Chickasaw, Itawamba, Lee, Monroe and 5 more | 60 min |
| Sep 22, 12:49 PM CDT | Mesoscale Discussion | SPC | Bollinger, Callaway, Cape Girardeau, Carter, Crawford, Dent and 23 more | 2 hr |
| Sep 22, 1:16 PM CDT | Tornado Watch | SPC | Audrain, Bollinger, Boone, Butler, Callaway, Cape Girardeau and 31 more | 8 hr |
Nearby
Mesoscale Discussions in Arkansas, 2006Mesoscale Discussions in Tennessee, 2006Mesoscale Discussions in Mississippi, 2006Every mesoscale discussion 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.