Alert archive / Florida / Special Weather Statements in 2016
Special Weather Statement, NWS Jacksonville, FL
NWS Jacksonville, FL issued this special weather statement at Jul 18, 2016, 1:09 PM EDT for Nassau County, Florida. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jul 18, 2016, 1:09 PM EDT (17:09 UTC)
- Expired
- Jul 18, 2016, 1:45 PM EDT
- In force
- 36 min
- Issued by
- NWS Jacksonville, FL
County Nassau County, FL
The radar
The Jacksonville radar (KJAX), 16 km from the middle of the area, began a volume at 17:08 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, 5.2 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
- 2303 J/kg
- Mixed-layer CIN
- -19 J/kg
- Mixed-layer LCL
- 690 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- -14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
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</html>What forecasters said that day
The local office's own words before this special weather statement 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 special weather statement went out at Jul 18, 10:04 AM EDT, 3 hours 5 minutes earlier.
Area forecast discussion, Jul 18, 10:04 AM EDT, 3 hours 5 minutes before
Area Forecast Discussion National Weather Service Jacksonville FL 1004 AM EDT MON JUL 18 2016 .UPDATE... No major updates needed to the forecast this morning. The 12Z sounding showed a cap around 850mb, which should prevent significant convection from developing until the mid to late afternoon hours. There were a few showers/storms over the Atlantic waters, which may impact the coastal areas this morning. Otherwise, only isolated to widely scattered showers and storms will develop along the east coast sea breeze due to the capping in place, with scattered diurnally driven storms developing from Highway 301 westward. Highs will be near seasonal norms in the low to mid 90s, except upper 80s to near 90 along the coast. && .AVIATION... Isolated to widely scattered showers/storms will develop along the east coast sea breeze this afternoon and then move inland. May need a TEMPO group at KGNV this afternoon for storms. Light winds away from the coast this morning will shift to the east around 10 knots as the sea breeze moves inland. Winds will diminish overnight. && .PRELIMINARY POINT TEMPS/POPS... AMG 95 73 94 73 / 40 20 50 20 SSI 89 77 87 80 / 30 10 20 10 JAX 92 75 91 76 / 30 10 20 10 SGJ 89 76 89 77 / 30 10 20 10 GNV 94 71 93 72 / 40 10 30 10 OCF 94 72 94 74 / 40 10 30 10 && .JAX Watches/Warnings/Advisories... FL...None. GA...None. AM...None. && Kennedy/Struble/Walker
Hazardous weather outlook, Jul 18, 3:15 AM EDT, 9 hours 54 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 315 AM EDT MON JUL 18 2016 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125- GAZ132>136-149>154-162>166-191100- COASTAL WATERS FROM ALTAMAHA SOUND TO FERNANDINA BEACH FL OUT 20 NM- COASTAL WATERS FROM FERNANDINA BEACH TO ST. AUGUSTINE FL OUT 20 NM- COASTAL WATERS FROM ST. AUGUSTINE TO FLAGLER BEACH FL OUT 20 NM- WATERS FROM ALTAMAHA SOUND GA TO FERNANDINA BEACH FL FROM 20 TO 60 NM- WATERS FROM FERNANDINA BEACH TO ST. AUGUSTINE FL FROM 20 TO 60 NM- WATERS FROM ST. AUGUSTINE TO FLAGLER BEACH FL FROM 20 TO 60 NM- HAMILTON-SUWANNEE-COLUMBIA-BAKER-INLAND NASSAU-INLAND DUVAL-UNION- BRADFORD-CLAY-ST. JOHNS-GILCHRIST-ALACHUA-PUTNAM-FLAGLER-MARION- COASTAL NASSAU-COASTAL DUVAL-COFFEE-JEFF DAVIS-BACON-APPLING- WAYNE-ATKINSON-WARE-PIERCE-BRANTLEY-INLAND GLYNN-COASTAL GLYNN- ECHOLS-CLINCH-CHARLTON-INLAND CAMDEN-COASTAL CAMDEN- 315 AM EDT MON JUL 18 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA... SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... SCATTERED AFTERNOON THUNDERSTORMS WILL DEVELOP INLAND AS THE SEA BREEZE FRONT MOVES INLAND. THE GREATEST COVERAGE IN THUNDERSTORM ACTIVITY WILL FOCUS WEST OF THE HIGHWAY 301 CORRIDOR DURING THE AFTERNOON AND EARLY EVENING HOURS. A FEW STRONG TO SEVERE STORMS ARE POSSIBLE AND WILL BE CAPABLE OF PRODUCING EXCESSIVE LIGHTNING...STRONG WIND GUSTS...AND LOCALLY HEAVY RAINFALL. STORM MOTION WILL BE TO THE WEST AROUND 10 MPH. HEAT INDEX VALUES WILL NEAR 105 DEGREES INLAND THIS AFTERNOON. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... SCATTERED MAINLY INLAND AFTERNOON AND EVENING THUNDERSTORMS ARE EXPECTED EACH DAY. STRONG TO ISOLATED SEVERE STORMS ARE POSSIBLE...WITH GUSTY WINDS...FREQUENT LIGHTNING AND HEAVY DOWNPOURS. ELEVATED HEAT INDICES NEAR 105 ARE POSSIBLE EACH AFTERNOON. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION WILL NOT BE NEEDED. 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, Jul 18, 1:09 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE JACKSONVILLE FL 109 PM EDT MON JUL 18 2016 FLZ024-025-124-125-181745- COASTAL NASSAU FL-INLAND NASSAU FL-COASTAL DUVAL FL-INLAND DUVAL FL- 109 PM EDT MON JUL 18 2016 ...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL NASSAU AND NORTHEASTERN DUVAL COUNTIES UNTIL 145 PM EDT... AT 108 PM EDT...DOPPLER RADAR WAS TRACKING A STRONG THUNDERSTORM NEAR YULEE...OR 8 MILES NORTHEAST OF JACKSONVILLE INTERNATIONAL ARPT. THIS STORM WAS NEARLY STATIONARY. HAIL UP TO NICKEL SIZE IN DIAMETER AND GUSTY WINDS OF 45 TO 55 MPH CAN BE EXPECTED ALONG WITH POSSIBLE MINOR DAMAGE. LOCATIONS IMPACTED INCLUDE... JACKSONVILLE...JACKSONVILLE INTERNATIONAL ARPT...YULEE AND OCEANWAY. PRECAUTIONARY/PREPAREDNESS ACTIONS... REPORT DAMAGE TO THE NEAREST LAW ENFORCEMENT AGENCY OR YOUR COUNTY EMERGENCY MANAGEMENT. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. LIGHTNING CAN STRIKE 10 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE. && LAT...LON 3071 8149 3049 8148 3043 8173 3064 8180 TIME...MOT...LOC 1708Z 072DEG 4KT 3056 8159 STRUBLE
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 18, 1:16 PM EDT | Special Marine Warning | JAX | 44 min | |
| Jul 18, 1:18 PM EDT | Special Weather Statement | JAX | Putnam | 42 min |
| Jul 18, 1:21 PM EDT | Special Weather Statement | JAX | Putnam | 24 min |
| Jul 18, 1:47 PM EDT | Special Weather Statement | JAX | Nassau | 43 min |
| Jul 18, 1:49 PM EDT | Special Weather Statement | JAX | Putnam | 26 min |
| Jul 18, 1:55 PM EDT | Special Weather Statement | JAX | Marion | 35 min |
| Jul 18, 2:17 PM EDT | Special Weather Statement | JAX | Putnam | 43 min |
| Jul 18, 3:12 PM EDT | Special Weather Statement | JAX | Clay | 33 min |
| Jul 18, 3:56 PM EDT | Special Weather Statement | JAX | Bradford | 34 min |
| Jul 18, 4:59 PM EDT | Special Weather Statement | JAX | Marion | 31 min |
| Jul 18, 5:31 PM EDT | Special Weather Statement | JAX | Marion | 29 min |
| Jul 18, 5:56 PM EDT | Special Weather Statement | JAX | Marion | 34 min |
| Jul 18, 1:30 PM EDT | Special Weather Statement | JAX | Glynn | 30 min |
| Jul 18, 2:05 PM EDT | Special Weather Statement | JAX | Wayne | 25 min |
| Jul 18, 2:15 PM EDT | Special Weather Statement | JAX | Camden | 45 min |
| Jul 18, 2:58 PM EDT | Special Weather Statement | JAX | Camden | 32 min |
Nearby
Special Weather Statements in Florida, 2016Every special weather statement in 2016
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.