Alert archive / Florida / Special Weather Statements in 2016
Special Weather Statement, NWS Jacksonville, FL
NWS Jacksonville, FL issued this special weather statement at Jul 11, 2016, 5:51 PM EDT for Columbia County, Gilchrist County, Florida. It was in force for 24 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 11, 2016, 5:51 PM EDT (21:51 UTC)
- Expired
- Jul 11, 2016, 6:15 PM EDT
- In force
- 24 min
- Issued by
- NWS Jacksonville, FL
Counties Columbia County, FL, Gilchrist County, FL
The radar
The Moody AFB radar (KVAX), 121 km from the middle of the area, began a volume at 21:53 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
Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 9.9 hours before the alert went out and 151 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
- 1076 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 980 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 23 m²/s²
- 0-3 km storm-relative helicity
- 34 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 11, 3:17 PM EDT, 2 hours 34 minutes earlier.
Area forecast discussion, Jul 11, 3:17 PM EDT, 2 hours 34 minutes before
Area Forecast Discussion National Weather Service Jacksonville FL 317 PM EDT MON JUL 11 2016 .NEAR TERM (Tonight-Tuesday night)... This afternoon-Tonight...Deep layer ridge continues over the area. Light but moist and unstable southwest flow is beginning to produce scattered storms along the west coast seabreeze and west of the St Johns River across Putnam and Marion counties. As both the west and east coast seabreezes push inland later this afternoon...scattered storms will continue to develop with strong storms possible. High-Res model continues to indicate strong storms especially possible where seabreezes and outflows merge...between U.S. Highway 301 and I-95. Storms will gradually fade out in the evening...but there may be a few lingering showers/storms that may propagate towards the coast before finally dissipating. Tuesday-Tuesday night...Deep layer ridge expected to be over the northern peninsula. A similar convective day is expected...with low end scattered convection possible over the eastern zones...with more isolated activity anticipated northwest of Waycross and Alma where less affects from sea breezes are expected. Highs continue above normal in the mid and upper 90s and max heat indices perhaps just shy of heat advisory criteria. .SHORT TERM /Wed-Thu/... Not much change to pattern as High Pressure ridge remains in place but slowly weakens enough to allow for slight up tick in shower and storm activity during the afternoon/evening hours. The high pressure ridge will still hold max temps into the mid/upper 90s inland and lower 90s with late sea breeze developing along the coast each day and Heat Indices will continue around 105 degrees and approach heat advisory criteria of 108F each afternoon. Sea breezes meeting inland should allow for storm coverage of 20-40% on Wed Afternoon and 30-50% Thu afternoon. Models still suggesting some cooling of 500MB temps to -8/-9C should allow for scattered strong storms and even isolated severe wet microburst potential late in the day as sea breezes meet over inland areas. .LONG TERM /Fri-Mon/... Stagnant pattern remains in place but longer range models have a slight shift in high pressure ridge in the lower levels towards south georgia which will help with more easterly flow across the Florida Peninsula which would offer a slight nudge downward in Max Temps into the lower/middle 90s there, while mid/upper 90s will continue across SE GA with heat indices around 105 degrees. Overall expect near normal coverage of scattered showers/storms during the afternoon/evening hours over inland areas as Atlc Coast Sea Breeze pushes further inland each afternoon as the low level steering flow slowly shifts from SWly to SEly through the period. Still only moderate confidence in this pattern shift. && .AVIATION...Scattered storms expected to continue to develop as seabreezes move inland. Have VCTS at all Ne Fl terminals aft 20z. Amendments may be needed for TS with MVFR vsby/cigs. No mention of thunder at SSI but have VCSH there between 00Z-03Z. Otherwise prevailing VFR expected with scattered showers/storms fading in the eve. && .MARINE...Southerly flow will prevail this week as surface high pressure dominates east to southeast over the western Atlantic. Southerly wind surges expected by late afternoon through the evening hours up to or just below exercise caution levels. Combined seas 2-4 ft expected...except briefly higher around 3-5 ft during the surges. Rip Currents: Generally low risk through Tuesday. && .CLIMATE... Through July 10th, Average Max Temp at Jacksonville is 95.9F, which is the 2nd hottest start to July on record since 1871. Behind only 1969 which had Avg Max Temp of 96.5F through 7-10. && .PRELIMINARY POINT TEMPS/POPS... AMG 73 97 74 98 / 10 30 20 30 SSI 79 94 79 94 / 20 20 20 30 JAX 75 95 75 96 / 30 30 30 40 SGJ 77 92 77 93 / 20 20 20 30 GNV 72 95 73 97 / 20 30 30 50 OCF 73 95 73 96 / 30 40 30 50 && .JAX Watches/Warnings/Advisories... FL...None. GA...None. AM...None. && Peterson/Hess/Walker
Hazardous weather outlook, Jul 11, 3:24 AM EDT, 14 hours 27 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE JACKSONVILLE FL 324 AM EDT MON JUL 11 2016 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125- GAZ132>136-149>154-162>166-120730- 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- 324 AM EDT MON JUL 11 2016 THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHEAST FLORIDA... SOUTHEAST GEORGIA AND THE ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT... HEAT INDEX TEMPERATURES WILL RISE TO BETWEEN 102 AND 107 DEGREES TODAY. THUNDERSTORMS WILL DEVELOP LATE THIS AFTERNOON AND THIS EVENING AS THE ATLANTIC SEA BREEZE MOVES WEST OF THE ST JOHNS RIVER AND OVER THE OKEFENOKEE SWAMP. STORMS MAY MOVE WEST INTO THE HOMERVILLE AND LAKE CITY AREAS THIS EVENING. SOME STORMS MAY BECOME STRONG WITH GUSTY WINDS AND FREQUENT LIGHTNING. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY... HEAT INDEX VALUES WILL RISE ABOVE 100 EACH AFTERNOON. ISOLATED TO SCATTERED AFTERNOON AND EVENING THUNDERSTORMS CAN BE EXPECTED EACH DAY. SOME STORMS MAY BECOME STRONG WITH GUSTY WINDS AND FREQUENT LIGHTNING. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED AT THIS TIME. FOR ADDITIONAL INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN JACKSONVILLE WEBSITE ON THE INTERNET AT WEATHER.GOV/JAX. SANDRIK
In the hours before
Special weather statement, Jul 11, 3:43 PM EDT, 2 hours 8 minutes before
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</html>Special weather statement, Jul 11, 4:12 PM EDT, 1 hour 39 minutes before
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</html>Special weather statement, Jul 11, 5:36 PM EDT, 15 minutes before
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</html>Special weather statement, Jul 11, 5:51 PM EDT, 0 minutes before
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</html>The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 2:58 PM EDT | Special Weather Statement | JAX | Alachua, Marion | 47 min |
| Jul 11, 3:31 PM EDT | Special Weather Statement | JAX | Flagler | 44 min |
| Jul 11, 3:43 PM EDT | Special Weather Statement | JAX | Saint Johns | 47 min |
| Jul 11, 3:45 PM EDT | Special Weather Statement | JAX | Putnam | 45 min |
| Jul 11, 4:12 PM EDT | Special Weather Statement | JAX | Flagler | 48 min |
| Jul 11, 4:15 PM EDT | Special Weather Statement | JAX | Gilchrist | 45 min |
| Jul 11, 5:36 PM EDT | Special Weather Statement | JAX | Union | 39 min |
| Jul 11, 6:16 PM EDT | Special Weather Statement | JAX | Columbia | 29 min |
| Jul 11, 6:20 PM EDT | Special Weather Statement | JAX | Gilchrist | 40 min |
| Jul 11, 6:48 PM EDT | Special Weather Statement | JAX | Columbia | 42 min |
| Jul 11, 7:09 PM EDT | Special Weather Statement | JAX | Nassau | 36 min |
| Jul 11, 7:28 PM EDT | Special Weather Statement | JAX | Nassau | 47 min |
| Jul 11, 6:10 PM EDT | Special Weather Statement | JAX | Echols | 35 min |
| Jul 11, 6:38 PM EDT | Special Weather Statement | JAX | Clinch | 37 min |
| Jul 11, 7:30 PM EDT | Special Weather Statement | JAX | Charlton | 30 min |
| Jul 11, 7:51 PM EDT | Special Weather Statement | JAX | Camden | 39 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.