Alert archive / Florida / Mesoscale Discussions in 2004
Mesoscale Discussion 2263
The Storm Prediction Center issued this mesoscale discussion at Sep 26, 2004, 3:11 PM EDT for 28 counties in Florida; 25 counties in Georgia; Beaufort County, Jasper County, South Carolina. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 26, 2004, 3:11 PM EDT (19:11 UTC)
- Expired
- Sep 26, 2004, 5:15 PM EDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 55 counties
Alachua County, FL, Baker County, FL, Bradford County, FL, Brevard County, FL, Citrus County, FL, Clay County, FL, Columbia County, FL, Duval County, FL, Flagler County, FL, Gilchrist County, FL, Hamilton County, FL, Hernando County, FL, Hillsborough County, FL, Indian River County, FL, Lake County, FL, Levy County, FL, Marion County, FL, Nassau County, FL, Orange County, FL, Osceola County, FL, Pasco County, FL, Polk County, FL, Putnam County, FL, Saint Johns County, FL, Seminole County, FL, Sumter County, FL, Union County, FL, Volusia County, FL, Appling County, GA, Atkinson County, GA, Bacon County, GA, Brantley County, GA, Bryan County, GA, Bulloch County, GA, Camden County, GA, Charlton County, GA, Chatham County, GA, Clinch County, GA, Coffee County, GA, Echols County, GA, Effingham County, GA, Evans County, GA, Glynn County, GA, Jeff Davis County, GA, Lanier County, GA, Liberty County, GA, Long County, GA, McIntosh County, GA, Pierce County, GA, Tattnall County, GA, Toombs County, GA, Ware County, GA, Wayne County, GA, Beaufort County, SC, Jasper County, SC
The radar
The Jacksonville radar (KJAX), 69 km from the middle of the area, began a volume at 19:13 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
Jacksonville, FL (KJAX), launched 12:00Z, 7.2 hours before the alert went out and 67 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
- 1022 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 577 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 245 m²/s²
- 0-3 km storm-relative helicity
- 287 m²/s²
- Significant tornado parameter
- 1.0
- Supercell composite
- 6.4
The text
As transmitted, in the capitals the NWS used until 2016.
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Service Notice</title>
<link rel="stylesheet" href="index.css">
</head>
<body>
<main class="wrap">
<section class="card" role="status" aria-live="polite">
<div class="status" id="status">Temporary Notice</div>
<h1 id="headline">This service is currently unavailable.</h1>
<p id="message1">
The site you requested is temporarily down for maintenance or an unexpected outage.
</p>
<p id="message2">
Please try again in a few minutes.
</p>
<p class="small" id="detail">
If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
</p>
</section>
</main>
<script src="index.js"></script>
</body>
</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 25, 8:48 PM EDT | Mesoscale Discussion | SPC | Brevard, Flagler, Glades, Hendry, Highlands, Indian River and 10 more | 117 min |
| Sep 25, 11:10 PM EDT | Tornado Watch | SPC | Brevard, Flagler, Glades, Hardee, Hendry, Highlands and 14 more | 7 hr |
| Sep 26, 2:37 AM EDT | Mesoscale Discussion | SPC | Brevard, Flagler, Highlands, Indian River, Lake, Marion and 6 more | 113 min |
| Sep 26, 4:50 AM EDT | Tornado Watch | SPC | Alachua, Baker, Bradford, Brevard, Citrus, Clay and 22 more | 12 hr |
| Sep 26, 8:21 AM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Brevard, Citrus, Clay and 18 more | 114 min |
| Sep 26, 11:13 AM EDT | Mesoscale Discussion | SPC | Alachua, Baker, Bradford, Brevard, Citrus, Clay and 22 more | 2 hr |
| Sep 26, 4:25 PM EDT | Tornado Watch | SPC | Alachua, Baker, Bradford, Clay, Columbia, Duval and 8 more | 9 hr |
| Sep 26, 7:16 PM EDT | Mesoscale Discussion | SPC | Baker, Duval, Nassau | 119 min |
Nearby
Mesoscale Discussions in Florida, 2004Mesoscale Discussions in Georgia, 2004Mesoscale Discussions in South Carolina, 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; radar from the NEXRAD Level II archive.