Alert archive / Arkansas / Mesoscale Discussions in 2003
Mesoscale Discussion 932
The Storm Prediction Center issued this mesoscale discussion at May 10, 2003, 10:29 PM CDT for 21 counties in Arkansas. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- May 10, 2003, 10:29 PM CDT (03:29 UTC)
- Expired
- May 11, 2003, 12:00 AM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
All 21 counties
Arkansas County, AR, Clark County, AR, Cleveland County, AR, Dallas County, AR, Garland County, AR, Grant County, AR, Hempstead County, AR, Hot Spring County, AR, Howard County, AR, Jefferson County, AR, Lee County, AR, Lincoln County, AR, Little River County, AR, Lonoke County, AR, Monroe County, AR, Montgomery County, AR, Perry County, AR, Pike County, AR, Prairie County, AR, Pulaski County, AR, Saline County, AR
The radar
The Little Rock radar (KLZK), 53 km from the middle of the area, began a volume at 03:29 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
Little Rock, AR (KLZK), launched 00:00Z, 3.5 hours before the alert went out and 236 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
- 1530 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 1136 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 215 m²/s²
- Significant tornado parameter
- 1.5
- Supercell composite
- 9.7
The text
As transmitted, in the capitals the NWS used until 2016.
179 ACUS11 KWNS 110329 SWOMCD SPC MCD 110329 ARZ000-MSZ000-OKZ000-110500- MESOSCALE DISCUSSION 0932 NWS STORM PREDICTION CENTER NORMAN OK 1029 PM CDT SAT MAY 10 2003 AREAS AFFECTED...SRN AR CONCERNING...SEVERE THUNDERSTORM WATCH 347... VALID 110329Z - 110500Z THREAT FOR MAINLY DAMAGING WIND AND LARGE HAIL EXPECTED TO PERSIST ANOTHER COUPLE HOURS. TORNADO THREAT MAY INCREASE AS ACTIVITY APPROACHES WRN TN AND NRN MS. STORMS ARE BECOMING A LITTLE BETTER ORGANIZED AS LINES...POSSIBLY DUE TO INCREASING WLY COMPONENT TO THE FLOW IN POST CONVECTIVE REGION AS WELL AS STRENGTHENING LOW LEVEL JET. ATMOSPHERE REMAINS MODERATELY UNSTABLE DOWNSTREAM FROM THE ACTIVITY AND STORM RELATIVE INFLOW ASSOCIATED WITH 50 KT SSWLY LOW LEVEL JET SHOULD BE SUFFICIENT FOR STORMS TO CONTINUE DEVELOPING EWD WITHIN WEAKLY CAPPED ENVIRONMENT. LOW LEVEL SHEAR HAS ALSO INCREASED IN RESPONSE TO DEVELOPING LOW LEVEL JET...THUS EMBEDDED SUPERCELLS MAY DEVELOP WITHIN THE LINE AS ACTIVITY CONTINUES EWD. ..DIAL.. 05/11/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...MEG...LZK...SHV... 35029321 35089188 34999031 34579082 33819140 33629213 33719343 33649449 34499388
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 10, 7:00 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Clark, Cleveland, Dallas, Garland, Grant and 18 more | 5 hr |
| May 10, 7:06 PM CDT | Mesoscale Discussion | SPC | Baxter, Boone, Clay, Cleburne, Conway, Craighead and 22 more | 54 min |
| May 10, 8:45 PM CDT | Tornado Watch | SPC | Baxter, Clay, Cleburne, Conway, Craighead, Crittenden and 18 more | 5 hr |
Nearby
Mesoscale Discussions in Arkansas, 2003Every mesoscale discussion in 2003
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.