Alert archive / Florida / High Surf Advisories in 2017
High Surf Advisory 5, NWS Jacksonville, FL
NWS Jacksonville, FL issued this high surf advisory at Sep 23, 2017, 9:30 AM EDT for Duval County, Flagler County, Florida. It took effect at Sep 23, 2017, 11:00 PM EDT. It was in force for 45 hr.
The area
The counties it named.
The facts
- Issued
- Sep 23, 2017, 9:30 AM EDT (13:30 UTC)
- In effect from
- Sep 23, 2017, 11:00 PM EDT
- Expired
- Sep 25, 2017, 8:00 PM EDT
- In force
- 45 hr
- Issued by
- NWS Jacksonville, FL
Counties Duval County, FL, Flagler County, FL
The radar
The Jacksonville radar (KJAX), 68 km from the middle of the area, began a volume at 13:30 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
Tampa Bay, FL (KTBW), launched 12:00Z, 1.5 hours before the alert went out and 261 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
- 873 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 758 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 74 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
What forecasters said that day
The local office's own words before this high surf advisory 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 high surf advisory went out at Sep 23, 3:51 AM EDT, 5 hours 39 minutes earlier.
Area forecast discussion, Sep 23, 3:51 AM EDT, 5 hours 39 minutes before
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</html>Hazardous weather outlook, Sep 23, 4:11 AM EDT, 5 hours 19 minutes before
Hazardous Weather Outlook National Weather Service Jacksonville FL 411 AM EDT Sat Sep 23 2017 AMZ450-452-454-470-472-474-FLZ020>025-030>033-035>038-040-124-125- GAZ132>136-149>154-162>166-240815- 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- 411 AM EDT Sat Sep 23 2017 ...HIGH RISK OF RIP CURRENTS THIS WEEKEND AND EARLY NEXT WEEK... ...SMALL CRAFT ADVISORY FOR THE COASTAL WATERS... ...MINOR TO MODERATE RIVER AND COASTAL FLOODING CONTINUES... This Hazardous Weather Outlook is for Northeast Florida, Southeast Georgia and the Adjacent Coastal Waters. .DAY ONE...Today and Tonight... Scattered thunderstorms are possible across southeast Georgia and northeast Florida. Locally heavy rainfall will be the primary hazard, though a few strong thunderstorms could produce gusty winds, frequent lightning strikes, and small hail. .DAYS TWO THROUGH SEVEN...Sunday through Friday... High surf will continue to impact area beaches this weekend through early next week, with a high risk of rip currents at area beaches. Small Craft Advisories will remain in effect for the coastal waters through at least early next week. Minor coastal flooding and beach erosion will be possible at area beaches during times of high tide this weekend and early next week. Minor to moderate river flooding will continue in multiple river basins this weekend. A coastal flood advisory will remain in effect through at least Saturday evening for minor to moderate flooding along the St Johns River basin during times of high tide. .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.
The office that day
Everything else NWS Jacksonville, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 23, 2:49 AM EDT | Rip Current Statement | JAX | Duval, Flagler, Nassau | 65 hr |
| Sep 23, 11:45 AM EDT | Special Weather Statement | JAX | Saint Johns | 30 min |
| Sep 23, 3:11 PM EDT | Special Weather Statement | JAX | Lafayette | 49 min |
| Sep 23, 4:00 PM EDT | Special Weather Statement | JAX | Citrus | 15 min |
| Sep 23, 4:16 PM EDT | Severe Thunderstorm Warning | JAX | Marion | 32 min |
| Sep 23, 5:08 PM EDT | Special Weather Statement | JAX | Hamilton | 37 min |
| Sep 23, 5:23 PM EDT | Special Weather Statement | JAX | Hamilton | 37 min |
Nearby
High Surf Advisories in Florida, 2017Every high surf advisory in 2017
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.