Alert archive / Florida / Mesoscale Discussions in 2003
Mesoscale Discussion 704
The Storm Prediction Center issued this mesoscale discussion at May 3, 2003, 11:24 AM CDT for Baldwin County, Escambia County, Mobile County, Alabama; 9 counties in Florida; 5 counties in Mississippi. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- May 3, 2003, 11:24 AM CDT (16:24 UTC)
- Expired
- May 3, 2003, 1:30 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
Counties Baldwin County, AL, Escambia County, AL, Mobile County, AL, Bay County, FL, Calhoun County, FL, Escambia County, FL, Holmes County, FL, Jackson County, FL, Okaloosa County, FL, Santa Rosa County, FL, Walton County, FL, Washington County, FL, George County, MS, Greene County, MS, Jackson County, MS, Perry County, MS, Stone County, MS
The nearest sounding before it
Slidell Radar S, LA (KSIL), launched 12:00Z, 4.4 hours before the alert went out and 216 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
- 1897 J/kg
- Mixed-layer CIN
- -23 J/kg
- Mixed-layer LCL
- 750 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 32 m²/s²
- 0-3 km storm-relative helicity
- 73 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
858 ACUS11 KWNS 031624 SWOMCD SPC MCD 031624 FLZ000-ALZ000-MSZ000-031830- MESOSCALE DISCUSSION 0704 NWS STORM PREDICTION CENTER NORMAN OK 1124 AM CDT SAT MAY 03 2003 AREAS AFFECTED...SERN MS...SRN AL AND THE WRN FL PANHANDLE CONCERNING...SEVERE THUNDERSTORM WATCH 219... VALID 031624Z - 031830Z THREAT FOR DAMAGING WIND AND LARGE HAIL EXPECTED TO PERSIST THROUGH 19Z...MAINLY OVER EXTREME SERN MS...SWRN AL AND THE EXTREME WRN FL PANHANDLE. DUE TO PROPAGATION EFFECTS ASSOCIATED WITH SWLY LOW LEVEL FLOW...STORMS HAVE BEGUN MOVING ALMOST DUE SOUTH AT AROUND 20 TO 25 KT WITH SOME BACKBUILDING INTO EXTREME SERN MS. ACTIVITY SHOULD CONTINUE DEVELOPING SWD SUPPORTED BY SSWLY 0-2 KM STORM RELATIVE INFLOW FROM DESTABILIZING WARM SECTOR WHERE MLCAPES RANGE FROM 2000 TO 2500 J/KG. CIRRUS SHIELD IS LIMITING DESTABILIZATION OVER THE CNTRL FL PANHANDLE INCLUDING ERN PARTS OF WW 219...SO GREATER THREAT IS EXPECTED TO REMAIN OVER THE WRN PARTS OF THE WW. ACTIVITY WILL LIKELY BEGIN MOVING OFFSHORE BY 1830Z. ..DIAL.. 05/03/2003 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...TAE...MOB...JAN...LIX... 31328792 31208656 30908520 29938509 30088649 30328805 30468939 30818943 31228919
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 7:38 PM CDT | Mesoscale Discussion | SPC | Autauga, Baldwin, Barbour, Bibb, Bullock, Butler and 36 more | 97 min |
| May 3, 8:45 AM CDT | Mesoscale Discussion | SPC | Coffee, Conecuh, Covington, Dale, Escambia, Geneva and 2 more | 2 hr |
| May 3, 9:15 AM CDT | Severe Thunderstorm Watch | SPC | Baldwin, Coffee, Conecuh, Covington, Escambia, Geneva and 4 more | 6 hr |
| May 3, 4:36 PM CDT | Mesoscale Discussion | SPC | Choctaw, Mobile, Washington | 114 min |
| May 3, 2:36 AM CDT | Mesoscale Discussion | SPC | Bolivar, Carroll, Coahoma, DeSoto, Grenada, Humphreys and 12 more | 24 min |
| May 3, 12:29 PM CDT | Mesoscale Discussion | SPC | Claiborne, Copiah, Hinds, Issaquena, Jefferson, Lawrence and 1 more | 3 hr |
| May 3, 4:45 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Amite, Claiborne, Clarke, Copiah, Covington and 27 more | 5 hr |
Nearby
Mesoscale Discussions in Florida, 2003Mesoscale Discussions in Mississippi, 2003Mesoscale Discussions in Alabama, 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.