Alert archive / Georgia / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 79, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 12, 2007, 8:16 AM EDT for Clinch County, Echols County, Georgia. It was in force for 59 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jun 12, 2007, 8:16 AM EDT (12:16 UTC)
- Expired
- Jun 12, 2007, 9:15 AM EDT
- In force
- 59 min
- Issued by
- NWS Jacksonville, FL
- Area
- Counties, with a storm outline in the text
Counties Clinch County, GA, Echols County, GA
The nearest sounding before it
Jacksonville, FL (KJAX), launched 12:00Z, 0.3 hours before the alert went out and 111 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
- 1068 J/kg
- Mixed-layer CIN
- -73 J/kg
- Mixed-layer LCL
- 674 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 8 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 3.4
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Jacksonville, FL wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 3:35 AM EDT, 4 hours 41 minutes earlier.
Area forecast discussion, Jun 12, 3:35 AM EDT, 4 hours 41 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 335 AM EDT TUE JUN 12 2007 ...SEVERE WEATHER EXPECTED ACROSS THE REGION MOST OF TODAY... A SHORT WAVE TROUGH IN THE UPPER ATMOSPHERE AND A COLD FRONTAL SYSTEM AT LOW LEVELS WILL PROVE TO THE BE FOCUSING MECHANISMS FOR SOME SEVERE WEATHER TODAY. THINGS ARE ALREADY FIRED UP OVER THE COASTAL WATERS AND MORE IMPORTANTLY OVER CENTRAL GEORGIA IN THE VICINITY OF MACON. SINCE WE ARE NEAR MAX DIURNAL COOLING AND DEW POINTS ARE RUNNING IN THE LOWER TO MID 70S AND A LOCAL STORM REPORT FROM ATLANTA INDICATES THAT A ROOF WAS BLOWN OFF OF A HOUSE AS THOSE STORMS MOVED THROUGH CRAWFORD COUNTY...IT DOESNT BODE WELL FOR THE REMAINDER OF THE DAY I COULD SPEND A LOT OF TIME GOING THROUGH ALL THE SEVERE WEATHER INDICES OR I COULD GET TO THE MAIN POINT...EXPECT SEVERE WEATHER THROUGH ABOUT MIDNIGHT WITH THE PEAK FROM THE MID-MORNING HOURS UNTIL AFTER SUNSET. LOOKS LIKE GFS IS TRYING TO GET OUR SUMMER MONSOON CONVECTION GOING...LETS HOPE THE MODEL IS ONTO SOMETHING HERE DESPITE BARRY WE ARE STILL DEALING WITH A MAJOR RAINFALL DEFICIT. STAYED CLOSE TO GFS GUIDANCE FOR THE EXTENDED PERIODS. && .AVIATION...WILL TRANSITION RAPIDLY FROM TEMPO CIG AND VSBY CONCERNS EARLY THIS MORNING TO STRONG TO SEVERE TSTMS LATER THIS MORNING AND THRU THE REST OF THE DAY. HAVE CONTINUED TIMING OF PREVIOUS PACKAGE WHICH STARTS THUNDER AT MOST SITES BEFORE NOONTIME. WILL LIKELY BEEF UP CONVECTIVE WIND GUSTS WITH NEXT ISSUANCE AS WELL AS FURTHER REFINE TIMING. && .MARINE...SHORT TERM CONCERNS REVOLVE AROUND STRONG TSTMS OVER THE COASTAL WATERS. WE HAVE ALREADY ISSUED 2 SPECIAL MARINE WARNINGS FOR SOME NASTY STORMS OFF THE SE GA AND EXTREME NE FL COAST. HAVE MENTIONED STRONG WIND GUSTS AND HAIL IN THE 1ST TWO PERIODS OF THE NEW CWF PACKAGE. SFC LOW DEVELOPMENT OFF THE CENTRAL FL ATLC COAST WILL LEAD TO A FAIRLY SHORT-LIVED INCREASE IN WINDS AND SEAS OVER THE WATERS WED AND THU. CONDITIONS WILL DEPEND GREATLY ON STRENGTH OF LOW AND THE HIGH TO THE N...BUT FOR NOW LOOKS LIKE CAUTION CRITERIA IN THE OFFSHORE WATERS FOR MID-WEEK. && .PRELIMINARY POINT TEMPS/POPS... AMG 88 65 86 63 / 70 40 40 20 SSI 84 71 81 70 / 80 40 60 30 JAX 85 67 82 64 / 80 50 50 20 SGJ 84 69 78 67 / 90 50 60 30 GNV 88 67 83 65 / 70 40 40 20 OCF 87 68 86 64 / 60 40 40 20 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && SANDRIK/CARROLL
Hazardous weather outlook, Jun 12, 4:25 AM EDT, 3 hours 51 minutes before
<!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>In the hours before
Special weather statement, Jun 12, 7:19 AM EDT, 57 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 719 AM EDT TUE JUN 12 2007 GAZ152-165-121200- BRANTLEY-INLAND CAMDEN- 719 AM EDT TUE JUN 12 2007 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR BRANTLEY AND CAMDEN COUNTIES FOR STRONG WINDS...SMALL HAIL AND EXCESSIVE LIGHTNING VALID UNTIL 800 AM EDT... AT 719 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM CENTERED 2 MILES NORTHEAST OF NAHUNTA...MOVING SOUTHEAST AT 20 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND NAHUNTA...ATKINSON...WAVERLY AND TARBORO THROUGH 800 AM EDT. HAIL UP TO ONE HALF INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. ZAPPE
Special weather statement, Jun 12, 7:55 AM EDT, 21 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 755 AM EDT TUE JUN 12 2007 FLZ020-GAZ162-163-121300- CLINCH-ECHOLS-HAMILTON- 755 AM EDT TUE JUN 12 2007 ...A SIGNIFICANT WEATHER ALERT HAS BEEN ISSUED FOR CLINCH...ECHOLS AND HAMILTON COUNTIES FOR A STRONG THUNDERSTORM APPROACHING THE AREA... AT 755 AM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM NORTHWEST OF VALDOSTA MOVING SOUTHEAST TOWARD THE HOMERVILLE...JASPER AND STATENVILLE AREAS. IF THIS STORM MAINTAINS ITS CURRENT INTENSITY IT SHOULD ENTER PORTIONS OF CLINCH... ECHOLS AND HAMILTON COUNTIES BETWEEN 830 AND 930 AM EDT. EXCESSIVE LIGHTNING IS OCCURRING WITH THIS STORM AND SHOULD CONTINUE...IT WOULD BE PRUDENT TO SECURE ELECTRICAL EQUIPMENT PRIOR TO THE STORMS ARRIVAL. REMAIN ALERT FOR POSSIBLE WARNINGS ASSOCIATED WITH THIS STORM. SANDRIK
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 12, 1:54 AM EDT | Special Marine Warning | JAX | 2 hr | |
| Jun 12, 3:07 AM EDT | Special Marine Warning | JAX | 53 min | |
| Jun 12, 4:01 AM EDT | Special Marine Warning | JAX | 89 min | |
| Jun 12, 5:28 AM EDT | Special Marine Warning | JAX | 92 min | |
| Jun 12, 7:12 AM EDT | Special Marine Warning | JAX | 2 hr | |
| Jun 12, 8:03 AM EDT | Special Marine Warning | JAX | 117 min | |
| Jun 12, 8:37 AM EDT | Special Marine Warning | JAX | 113 min | |
| Jun 12, 9:45 AM EDT | Severe Thunderstorm Warning | JAX | Baker, Columbia | 45 min |
| Jun 12, 10:23 AM EDT | Special Marine Warning | JAX | 2 hr | |
| Jun 12, 10:36 AM EDT | Severe Thunderstorm Warning | JAX | Clay, Saint Johns | 54 min |
| Jun 12, 10:41 AM EDT | Severe Thunderstorm Warning | JAX | Duval | 23 min |
| Jun 12, 10:43 AM EDT | Severe Thunderstorm Warning | JAX | Bradford | 47 min |
| Jun 12, 11:09 AM EDT | Tornado Warning | JAX | Saint Johns | 40 min |
| Jun 12, 11:27 AM EDT | Severe Thunderstorm Warning | JAX | Flagler | 63 min |
| Jun 12, 12:23 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 67 min |
| Jun 12, 9:17 AM EDT | Severe Thunderstorm Warning | JAX | Clinch, Echols, Ware | 43 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2007Every severe thunderstorm warning in 2007
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.