Alert archive / Arkansas / Mesoscale Discussions in 2012
Mesoscale Discussion 1036
The Storm Prediction Center issued this mesoscale discussion at Jun 3, 2012, 5:02 PM CDT for 4 states. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Jun 3, 2012, 5:02 PM CDT (22:02 UTC)
- Expired
- Jun 3, 2012, 6:30 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
All 70 counties
Arkansas County, AR, Baxter County, AR, Boone County, AR, Carroll County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Faulkner County, AR, Franklin County, AR, Fulton County, AR, Garland County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Jefferson County, AR, Johnson County, AR, Lawrence County, AR, Lee County, AR, Logan County, AR, Lonoke County, AR, Madison County, AR, Marion County, AR, Mississippi County, AR, Monroe County, AR, Newton County, AR, Perry County, AR, Phillips County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Dunklin County, MO, Alcorn County, MS, Benton County, MS, Coahoma County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Tallahatchie County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Yalobusha County, MS, Chester County, TN, Crockett County, TN, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Lauderdale County, TN, Madison County, TN, McNairy County, TN, Shelby County, TN, Tipton County, TN
The radar
The Little Rock radar (KLZK), 96 km from the middle of the area, began a volume at 22:05 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 12:00Z, 10.0 hours before the alert went out and 136 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
- 2125 J/kg
- Mixed-layer CIN
- -101 J/kg
- Mixed-layer LCL
- 1076 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 93 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
967
ACUS11 KWNS 032202
SWOMCD
SPC MCD 032202
MSZ000-TNZ000-MOZ000-ARZ000-032330-
MESOSCALE DISCUSSION 1036
NWS STORM PREDICTION CENTER NORMAN OK
0502 PM CDT SUN JUN 03 2012
AREAS AFFECTED...NRN/CNTRL AR...WRN TN...NRN MS
CONCERNING...TORNADO WATCH 345...
VALID 032202Z - 032330Z
THE SEVERE WEATHER THREAT FOR TORNADO WATCH 345 CONTINUES.
SUMMARY...CLUSTERS OF STRONG TO SEVERE TSTMS IN NRN AR SHOULD
CONTINUE TO INCREASE IN COVERAGE WITH MCS DEVELOPMENT APPEARING
PROBABLE THIS EVENING. A DOWNSTREAM WW ISSUANCE INTO PARTS OF TN/MS
IS LIKELY.
DISCUSSION...OVERALL TSTM COVERAGE/INTENSITY HAS BEEN INCREASING
ACROSS NRN AR...AIDED BY MODEST LOW-LEVEL WARM THETA-E ADVECTION
ATOP A DIFFUSE OUTFLOW BOUNDARY/CONFLUENCE AXIS. ALTHOUGH SURFACE
FLOW WAS WEAK AND SOMEWHAT DIVERGENT ACROSS THE MS VALLEY...GUIDANCE
IS CONSISTENT THAT W/SWLYS AT 850 MB SHOULD INCREASE TO NEAR 30 KT
THIS EVENING...SUPPORTING CONTINUED SUSTENANCE OF A STRONGLY BUOYANT
WARM SECTOR AIR MASS. THIS SHOULD YIELD UPSCALE GROWTH OF ONGOING
CONVECTION...LIKELY INTO AN MCS /A SCENARIO DEPICTED BY RECENT HRRR
GUIDANCE AND INFERRED FROM THE ECMWF/GFS/NAM/. PRIMARY THREAT SHOULD
BECOME DAMAGING WINDS AND SEVERE HAIL.
..GRAMS.. 06/03/2012
...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...
ATTN...WFO...MEG...JAN...LZK...SGF...TSA...
LAT...LON 36009396 36509344 36599273 36269047 35908880 35438850
34858858 34198893 33938936 33899043 34189208 34719364
35319391 36009396SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 3, 2:27 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Carroll, Cleburne, Conway, Crawford and 25 more | 2 hr |
| Jun 3, 3:28 PM CDT | Tornado Watch | SPC | Baxter, Benton, Boone, Carroll, Cleburne, Conway and 18 more | 6 hr |
| Jun 3, 1:11 PM CDT | Mesoscale Discussion | SPC | Itawamba, Lee, Lowndes, Monroe, Prentiss, Tishomingo | 64 min |
| Jun 3, 1:26 PM CDT | Severe Thunderstorm Watch | SPC | Tishomingo | 5 hr |
Nearby
Mesoscale Discussions in Arkansas, 2012Mesoscale Discussions in Mississippi, 2012Mesoscale Discussions in Tennessee, 2012Every mesoscale discussion 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.