Alert archive / Florida / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 82, NWS Jacksonville, FL
NWS Jacksonville, FL issued this severe thunderstorm warning at Jun 6, 2014, 7:34 PM EDT for Nassau County, Florida. It was in force for 26 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 6, 2014, 7:34 PM EDT (23:34 UTC)
- Expired
- Jun 6, 2014, 8:00 PM EDT
- In force
- 26 min
- Issued by
- NWS Jacksonville, FL
- Area
- Storm-based polygon
County Nassau County, FL
The radar
The Jacksonville radar (KJAX), 16 km from the middle of the area, began a volume at 23:34 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
Jacksonville, FL (KJAX), launched 12:00Z, 11.6 hours before the alert went out and 14 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
- 116 J/kg
- Mixed-layer CIN
- -216 J/kg
- Mixed-layer LCL
- 1426 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- -39 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
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 6, 2:46 PM EDT, 4 hours 48 minutes earlier.
Area forecast discussion, Jun 6, 2:46 PM EDT, 4 hours 48 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE JACKSONVILLE FL 246 PM EDT FRI JUN 6 2014 .SHORT TERM... THUNDERSTORM ACTIVITY SO FAR HAS BEEN SUPPRESSED BY MID LEVEL RIDGING/SUBSIDENCE IN THE WAKE OF AN EARLY MORNING MCS THAT IS NOW SEEN ON VISIBLE SATELLITE SWIRLING OFF THE COAST OF SC. THE ATLANTIC SEABREEZE IS ACTUALLY MAKING A LITTLE MORE INLAND PROGRESS IN NE FL THAN WE HAD ORIGINALLY ANTICIPATED...WHICH IS MAINLY DUE TO SLIGHTLY LIGHTER WESTERLY SYNOPTIC WINDS AS WELL AS THE HEAT GETTING OFF TO A QUICK START THIS MORNING. IN FACT...JAX HAS ALREADY SOARED UP TO AS HIGH AS 94 SHORTLY AFTER THE NOON HOUR. SOME ISOLATED STORMS WILL TRY TO DEVELOP THIS AFTERNOON BUT THE MAIN EVENT WILL ULTIMATELY HOLD OFF UNTIL MAINLY DURING THE EARLY EVENING HOURS WHEN UPSTREAM SHORTWAVE ENERGY WILL MOVE INTO SOUTHEAST GEORGIA AND INTERACT WITH A SURFACE TROUGH AND STRONG ATMOSPHERIC INSTABILITY. CAPE VALUES ARE ALREADY HIGH AS MOST AREAS ARE IN THE 90S WITH DEWPOINTS AROUND 70. SCATTERED TO NUMEROUS STORMS WILL MOVE SOUTHEAST INTO OUR GEORGIA COUNTIES BY SUNSET AND THIS ACTIVITY WILL SPREAD INTO NORTHERN FLORIDA THIS EVENING. ACTIVITY ALONG THE I-95 CORRIDOR MAY BECOME ENHANCED THIS EVENING AS THE GULF COAST SEABREEZE INTERACTS WITH THE ATLANTIC SEABREEZE. THE SLIGHT RISK OF SEVERE STORMS REMAINS MOSTLY FOR SOUTHEAST GEORGIA BUT A FEW STRONG TO SEVERE STORMS WILL ALSO BE POSSIBLE ALONG THE I-10 CORRIDOR OF NE FL THIS EVENING. THE MAIN THREAT WILL BE DAMAGING WINDS BUT ISOLATED LARGE HAIL WILL ALSO BE POSSIBLE. THUNDERSTORM ACTIVITY WILL LINGER PAST MIDNIGHT TONIGHT BEFORE FINALLY WINDING DOWN DURING THE EARLY MORNING HOURS. .EXTENDED... THE MESOSCALE CONVECTIVE SYSTEM...MCS...SETTING UP OVER NORTHWEST GEORGIA WILL DIVE SOUTHEAST AROUND THE NORTHEASTERN EDGE OF THE RIDGE. THIS CONVECTION SHOULD BE MOVING OFFSHORE OF COASTAL GEORGIA TOMORROW MORNING WITH SOME SUBSIDENCE IN ITS WAKE. SO AFTER A STORMY NIGHT FOR PORTIONS OF THE REGION SHOULD SEE SOME CLEARING MY MID MORNING AND A SHORT BREAK IN THE STORMS. LOOKS LIKE YET ANOTHER MCS WILL SET UP FOR TOMORROW AFTERNOON WILL ALSO DIVE SOUTHEASTWARD INTO OUR GEORGIA-EXTREME NORTH FLORIDA PORTIONS OF THE FORECAST AREA FOR THE EVENING HOURS. EXPECT THESE STORMS WILL CONTINUE MOST OF SATURDAY NIGHT AND INTO SUNDAY MORNING OVER GEORGIA AND EXTREME NORTH FLORIDA. AFTER THAT IT LOOKS LIKE MOST OF THE SYNOPTIC ACTION SHIFTS BACK NORTH WITH AFTERNOON AND EARLY EVENING CONVECTION THE RULE FOR THE BALANCE OF THE WEEK. && .AVIATION... PREVAILING VFR CONDITIONS WILL CONTINUE THROUGH MOST OF THE DAY. THUNDERSTORMS WILL INCREASE THIS EVENING AND SOME OF THIS ACTIVITY WILL LIKELY RESULT IN A PERIOD OF IFR CONDITIONS AND GUSTY WINDS AT A FEW OF THE TERMINALS...ESPECIALLY ALONG AND NORTH OF THE I-10 CORRIDOR. LOCALLY HEAVY RAINFALL AND FREQUENT LIGHTNING CAN ALSO BE EXPECTED WITH THE STRONGEST STORMS. STORMS WILL WIND DOWN AFTER MIDNIGHT WITH PREVAILING CONDITIONS EXPECTED TO RETURN TO VFR. && .MARINE... PREVAILING CONDITIONS WILL REMAIN BELOW HEADLINE CRITERIA THROUGH EARLY NEXT WEEK. THUNDERSTORM ACTIVITY WILL BE ON THE INCREASE BEGINNING THIS EVENING WITH STORMS EXPECTED EACH DAY THROUGH NEXT WEEK. A FEW OF THESE STORMS COULD BE STRONG WITH LOCALLY GUSTY WINDS AND HIGHER SEAS. RIP CURRENTS: LOW RISK TODAY AND SATURDAY. && .PRELIMINARY POINT TEMPS/POPS... AMG 71 92 71 92 / 60 60 60 50 SSI 73 89 75 86 / 50 50 50 30 JAX 72 91 70 90 / 50 60 60 50 SGJ 73 88 73 87 / 50 50 50 40 GNV 70 90 70 91 / 30 50 50 50 OCF 70 91 70 91 / 10 50 40 50 && .JAX WATCHES/WARNINGS/ADVISORIES... FL...NONE. GA...NONE. AM...NONE. && SHULER/SANDRIK/MCALLISTER
Hazardous weather outlook, Jun 6, 4:09 PM EDT, 3 hours 25 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 409 PM EDT FRI JUN 6 2014 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040- GAZ132>136-149>154-162>166-070800- ALACHUA- ALTAMAHA SOUND GA TO FERNANDINA BEACH FL 20 NM TO 60 NM OFFSHORE- ALTAMAHA SOUND GA TO FERNANDINA BEACH FL OUT TO 20 NM-APPLING- ATKINSON-BACON-BAKER-BRADFORD-BRANTLEY-CAMDEN (COASTAL)- CAMDEN (INLAND)-CHARLTON-CLAY-CLINCH-COFFEE-COLUMBIA-DUVAL-ECHOLS- FERNANDINA BEACH TO ST AUGUSTINE FL 20 NM TO 60 NM OFFSHORE- FERNANDINA BEACH TO ST AUGUSTINE FL OUT TO 20 NM-FLAGLER-GILCHRIST- GLYNN (COASTAL)-GLYNN (INLAND)-HAMILTON-JEFF DAVIS-MARION-NASSAU- PIERCE-PUTNAM- ST AUGUSTINE TO FLAGLER BEACH FL 20 NM TO 60 NM OFFSHORE- ST AUGUSTINE TO FLAGLER BEACH FL OUT TO 20 NM-ST JOHNS-SUWANNEE- UNION-WARE-WAYNE- 409 PM EDT FRI JUN 6 2014 ...SLIGHT RISK OF SEVERE THUNDERSTORMS IN SOUTHEAST GEORGIA... THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA... SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...REST OF TODAY AND TONIGHT... SCATTERED THUNDERSTORMS ARE EXPECTED LATE THIS AFTERNOON THROUGH LATE THIS EVENING. THERE IS A SLIGHT RISK OF SEVERE STORMS OVER SOUTHEAST GEORGIA WITH STRONG WINDS OF AROUND 60 MPH AND HAIL POSSIBLE. A FEW STRONG STORMS WILL BE POSSIBLE OVER NORTHEAST FLORIDA...PRODUCING GUSTY WINDS AND HEAVY DOWNPOURS. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY... SCATTERED THUNDERSTORMS ARE EXPECTED EACH AFTERNOON AND EVENING. A FEW OF THESE STORMS MAY BECOME STRONG PRODUCING GUSTY WINDS AND HEAVY DOWNPOURS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED BY THIS EVENING. SPOTTERS SHOULD MONITOR CONDITIONS AND BE ALERT FOR THE POSSIBILITY OF STRONG TO LOCALLY SEVERE STORMS. PLEASE RELAY ANY STRONG OR SEVERE WEATHER CONDITIONS TO THE NATIONAL WEATHER SERVICE OR YOUR EMERGENCY MANAGEMENT OFFICIALS. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX.
In the hours before
Special weather statement, Jun 6, 6:19 PM EDT, 1 hour 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
619 PM EDT FRI JUN 6 2014
GAZ164-062300-
CHARLTON-
619 PM EDT FRI JUN 6 2014
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR CHARLTON COUNTY
FOR STRONG WINDS...SMALL HAIL AND EXCESSIVE LIGHTNING VALID UNTIL 700
PM EDT...
AT 620 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 12 MILES NORTHWEST OF ST. GEORGE...
MOVING SOUTHEAST AT 10 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT
AREAS AROUND ST. GEORGE THROUGH 700 PM EDT. HAIL UP TO THREE QUARTER
INCH IN DIAMETER...EXCESSIVE CLOUD-TO-GROUND LIGHTNING AND GUSTY
WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR
DAMAGE. IF FURTHER INTENSIFICATION OCCURS A WARNING MAY BE REQUIRED.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 3054 8202 3047 8202 3060 8221 3077 8215
3079 8216 3074 8204 3071 8204 3065 8205
3057 8200
TIME...MOT...LOC 2220Z 302DEG 7KT 3067 8212
SANDRIKSpecial weather statement, Jun 6, 6:27 PM EDT, 1 hour 7 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
627 PM EDT FRI JUN 6 2014
FLZ024-062315-
NASSAU-
627 PM EDT FRI JUN 6 2014
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR NASSAU COUNTY
FOR STRONG WINDS AND SMALL HAIL VALID UNTIL 715 PM EDT...
AT 627 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 7 MILES WEST OF CALLAHAN...MOVING SOUTH
AT 5 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS AROUND
HILLIARD AND CALLAHAN THROUGH 715 PM EDT. HAIL UP TO THREE QUARTER
INCH IN DIAMETER 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.
LAT...LON 3049 8183 3047 8202 3054 8202 3057 8200
3063 8204 3070 8204 3071 8204 3070 8181
TIME...MOT...LOC 2227Z 350DEG 5KT 3056 8195
SHASHYSpecial weather statement, Jun 6, 6:55 PM EDT, 39 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE JACKSONVILLE FL
655 PM EDT FRI JUN 6 2014
FLZ023-024-062345-
BAKER-NASSAU-
655 PM EDT FRI JUN 6 2014
...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR BAKER AND
SOUTHERN NASSAU COUNTIES FOR STRONG WINDS AND SMALL HAIL VALID UNTIL
745 PM EDT...
AT 655 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM CENTERED 2 MILES NORTHEAST OF SANDERSON...MOVING
EAST AT 10 MPH. THIS STRONG THUNDERSTORM WILL ALSO AFFECT AREAS
AROUND SANDERSON...GLEN SAINT MARY AND MACCLENNY THROUGH 745 PM EDT.
HAIL UP TO THREE QUARTER INCH IN DIAMETER AND GUSTY WINDS OF 40 TO 50
MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE.
REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY
EMERGENCY MANAGEMENT.
LAT...LON 3028 8205 3021 8205 3015 8209 3022 8238
3038 8230 3038 8218 3036 8217 3037 8211
3036 8209 3036 8206 3037 8203 3037 8194
TIME...MOT...LOC 2255Z 292DEG 9KT 3027 8224
SHASHYSpecial weather statement, Jun 6, 7:12 PM EDT, 22 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>Special weather statement, Jun 6, 7:17 PM EDT, 17 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>Local storm report, Jun 6, 7:18 PM EDT, 16 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>The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 4:43 PM EDT | Special Weather Statement | JAX | Clay | 47 min |
| Jun 6, 4:49 PM EDT | Severe Thunderstorm Warning | JAX | Clay | 41 min |
| Jun 6, 5:28 PM EDT | Special Weather Statement | JAX | Duval | 47 min |
| Jun 6, 6:05 PM EDT | Severe Thunderstorm Warning | JAX | Baker, Duval, Nassau | 40 min |
| Jun 6, 6:27 PM EDT | Special Weather Statement | JAX | Nassau | 48 min |
| Jun 6, 6:33 PM EDT | Severe Thunderstorm Warning | JAX | Duval, Nassau | 42 min |
| Jun 6, 6:41 PM EDT | Areal Flood Advisory | JAX | Baker, Duval, Nassau | 2 hr |
| Jun 6, 6:55 PM EDT | Special Weather Statement | JAX | Baker | 50 min |
| Jun 6, 7:17 PM EDT | Special Weather Statement | JAX | Nassau | 43 min |
| Jun 6, 7:23 PM EDT | Severe Thunderstorm Warning | JAX | Baker, Duval | 52 min |
| Jun 6, 7:49 PM EDT | Special Marine Warning | JAX | 116 min | |
| Jun 6, 7:59 PM EDT | Special Weather Statement | JAX | Nassau | 31 min |
| Jun 6, 5:49 PM EDT | Special Weather Statement | JAX | Appling, Jeff Davis | 26 min |
| Jun 6, 6:19 PM EDT | Special Weather Statement | JAX | Charlton | 41 min |
| Jun 6, 7:12 PM EDT | Special Weather Statement | JAX | Jeff Davis | 48 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2014Every severe thunderstorm warning in 2014
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.