Alert archive / Florida / Rip Current Statements in 2018
Rip Current Statement 36, NWS Jacksonville, FL
NWS Jacksonville, FL issued this rip current statement at Oct 21, 2018, 3:18 AM EDT for Duval County, Flagler County, Nassau County, Florida. It was in force for 17 hr.
The area
The counties it named.
The facts
- Issued
- Oct 21, 2018, 3:18 AM EDT (07:18 UTC)
- Expired
- Oct 21, 2018, 8:00 PM EDT
- In force
- 17 hr
- Issued by
- NWS Jacksonville, FL
Counties Duval County, FL, Flagler County, FL, Nassau County, FL
The radar
The Jacksonville radar (KJAX), 40 km from the middle of the area, began a volume at 07:21 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 00:00Z, 7.3 hours before the alert went out and 42 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
- 371 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1401 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 178 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.7
The text
As transmitted.
346 WHUS42 KJAX 210718 CFWJAX Coastal Hazard Message National Weather Service Jacksonville FL 318 AM EDT Sun Oct 21 2018 FLZ124-125-133-138-220000- /O.NEW.KJAX.RP.S.0036.181021T0718Z-181022T0000Z/ Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler- 318 AM EDT Sun Oct 21 2018 ...HIGH RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING... The National Weather Service in Jacksonville has issued a High Rip Current Risk, which is in effect through this evening. * TIMING...Through this evening. * IMPACTS...Life threatening rip currents. PRECAUTIONARY/PREPAREDNESS ACTIONS... There is a High Risk of rip currents. Rip currents will be life threatening. Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as groins, jetties and piers. Heed the advice of lifeguards and the beach patrol. Pay attention to flags and posted signs. Swim near a lifeguard. If caught in a rip current remain calm. Don't fight the current. Swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. If tired, float or tread water until out of the rip current. && $$
1 follow-up statement
740 WHUS42 KJAX 220018 CFWJAX Coastal Hazard Message National Weather Service Jacksonville FL 818 PM EDT Sun Oct 21 2018 FLZ124-125-133-138-220130- /O.EXP.KJAX.RP.S.0036.000000T0000Z-181022T0000Z/ Coastal Nassau-Coastal Duval-Coastal St. Johns-Coastal Flagler- 818 PM EDT Sun Oct 21 2018 ...HIGH RIP CURRENT RISK HAS EXPIRED... $$
Nearby
Rip Current Statements in Florida, 2018Every rip current statement in 2018
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.