Alert archive / Florida / Mesoscale Discussions in 2004
Mesoscale Discussion 45
The Storm Prediction Center issued this mesoscale discussion at Jan 26, 2004, 3:00 PM EST for 10 counties in Florida; 9 counties in Georgia. It was in force for 60 min.
The area
The outline as issued.
The facts
- Issued
- Jan 26, 2004, 3:00 PM EST (20:00 UTC)
- Expired
- Jan 26, 2004, 4:00 PM EST
- In force
- 60 min
- Issued by
- the Storm Prediction Center
Counties Baker County, FL, Columbia County, FL, Hamilton County, FL, Jefferson County, FL, Lafayette County, FL, Madison County, FL, Nassau County, FL, Suwannee County, FL, Taylor County, FL, Union County, FL, Atkinson County, GA, Brantley County, GA, Charlton County, GA, Clinch County, GA, Echols County, GA, Lanier County, GA, Lowndes County, GA, Pierce County, GA, Ware County, GA
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 8.0 hours before the alert went out and 112 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
- 899 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 152 m²/s²
- 0-3 km storm-relative helicity
- 232 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
637 ACUS11 KWNS 262000 SWOMCD SPC MCD 262000 FLZ000-GAZ000-262100- MESOSCALE DISCUSSION 0045 NWS STORM PREDICTION CENTER NORMAN OK 0200 PM CST MON JAN 26 2004 AREAS AFFECTED...NRN FL / SERN GA CONCERNING...TORNADO WATCH 3... VALID 262000Z - 262100Z MAIN AREA OF THUNDERSTORMS CONTINUES MOVING EWD ACROSS SRN GA / NRN FL TOWARD LESS UNSTABLE AIRMASS. SEVERE THREAT APPEARS TO BE DECREASING...ALTHOUGH LOCALIZED THREAT -- PARTICULARLY ACROSS THE ERN PANHANDLE -- WILL CONTINUE FOR THE NEXT 1 TO 2 HOURS. COLD FRONT CONTINUES MOVING SLOWLY SWD ACROSS SRN GA...AND MAIN CONVECTIVE LINE HAS NOW REACHED THE ERN FL PANHANDLE -- EAST OF AXIS OF GREATEST INSTABILITY. ALTHOUGH SOME INSTABILITY REMAINS ACROSS SRN GA / NRN FL EAST OF CONVECTIVE LINE AND SOUTH OF COLD FRONT...CONTINUED SWD MOTION OF FRONT AND THE ONSET OF DIURNAL AIRMASS STABILIZATION SHOULD RESULT IN A DECREASE IN SEVERE THREAT WITH TIME. THE THREAT FOR A LOCALIZED SEVERE EVENT WILL REMAIN FOR THE NEXT 1 TO 2 HOURS ACROSS FAR SERN GA / NRN FL SOUTH OF COLD FRONT / EAST OF MAIN CONVECTIVE LINE. HOWEVER...IT APPEARS ATTM THAT FOR THE REMAINDER OF THE AFTERNOON THE SEVERE THREAT SHOULD BE SUFFICIENTLY LIMITED TO PRECLUDE THE NEED FOR AN ADDITIONAL WATCH BEYOND THE EXPIRATION OF WW 003. ..GOSS.. 01/26/2004 ...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT... ATTN...WFO...JAX...TAE... 31328298 31378191 30798158 30078185 29738348 30088404 30338409
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 26, 3:10 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Escambia, Gadsden, Gulf, Holmes and 8 more | 3 hr |
| Jan 26, 5:15 AM EST | Tornado Watch | SPC | Bay, Calhoun, Escambia, Gadsden, Holmes, Jackson and 5 more | 6 hr |
| Jan 26, 8:00 AM EST | Mesoscale Discussion | SPC | Bay, Calhoun, Escambia, Gadsden, Holmes, Jackson and 5 more | 2 hr |
| Jan 26, 10:30 AM EST | Tornado Watch | SPC | Bay, Calhoun, Gadsden, Gulf, Holmes, Jackson and 8 more | 6 hr |
| Jan 26, 12:10 PM EST | Mesoscale Discussion | SPC | Bay, Gulf | 65 min |
| Jan 26, 4:15 AM EST | Mesoscale Discussion | SPC | Clarke, Columbia, Elbert, Glascock, Greene, Hancock and 14 more | 6 hr |
| Jan 26, 5:57 PM EST | Mesoscale Discussion | SPC | Banks, Barrow, Clarke, Elbert, Franklin, Greene and 13 more | 5 hr |
Nearby
Mesoscale Discussions in Florida, 2004Mesoscale Discussions in Georgia, 2004Every mesoscale discussion in 2004
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.