Alert archive / Florida / High Surf Advisories in 2021
High Surf Advisory 3, NWS Miami, FL
NWS Miami, FL issued this high surf advisory at Mar 21, 2021, 3:24 AM EDT for Palm Beach County, Florida. It took effect at Mar 21, 2021, 8:00 AM EDT. It was in force for 24 hr.
The area
The counties it named.
The facts
- Issued
- Mar 21, 2021, 3:24 AM EDT (07:24 UTC)
- In effect from
- Mar 21, 2021, 8:00 AM EDT
- Expired
- Mar 22, 2021, 8:00 AM EDT
- In force
- 24 hr
- Issued by
- NWS Miami, FL
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 115 km from the middle of the area, began a volume at 07:26 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
Miami, FL (KMFL), launched 00:00Z, 7.4 hours before the alert went out and 93 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
- 191 J/kg
- Mixed-layer CIN
- -168 J/kg
- Mixed-layer LCL
- 1159 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted.
921 WHUS42 KMFL 210724 CFWMFL Coastal Hazard Message National Weather Service Miami FL 324 AM EDT Sun Mar 21 2021 FLZ168-211530- /O.NEW.KMFL.SU.Y.0003.210321T1200Z-210322T1200Z/ /O.CON.KMFL.RP.S.0011.210321T1200Z-210322T1200Z/ Coastal Palm Beach- 324 AM EDT Sun Mar 21 2021 ...HIGH SURF ADVISORY IN EFFECT FROM 8 AM THIS MORNING TO 8 AM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH MONDAY MORNING... * WHAT...For the High Surf Advisory, large breaking waves of 7 feet expected in the surf zone. For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Coastal Palm Beach County. * WHEN...For the High Surf Advisory, from 8 AM this morning to 8 AM EDT Monday. For the High Rip Current Risk, from 8 AM EDT this morning through Monday morning. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$ FLZ172-173-211530- /O.CON.KMFL.RP.S.0011.210321T1200Z-210322T1200Z/ Coastal Broward-Coastal Miami-Dade- 324 AM EDT Sun Mar 21 2021 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH MONDAY MORNING... * WHAT...Dangerous rip currents expected. * WHERE...Coastal Broward and Coastal Miami-Dade Counties. * WHEN...From 8 AM EDT this morning through Monday morning. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
4 follow-up statements
824 WHUS42 KMFL 211359 CFWMFL Coastal Hazard Message National Weather Service Miami FL 959 AM EDT Sun Mar 21 2021 FLZ168-221200- /O.CON.KMFL.SU.Y.0003.000000T0000Z-210322T1200Z/ /O.CON.KMFL.RP.S.0011.000000T0000Z-210322T1200Z/ Coastal Palm Beach- 959 AM EDT Sun Mar 21 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH MONDAY MORNING... * WHAT...For the High Surf Advisory, large breaking waves of 5 to 7 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Coastal Palm Beach County. * WHEN...For the High Surf Advisory, until 8 AM EDT Monday. For the High Rip Current Risk, through Monday morning. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$ FLZ172-173-221200- /O.CON.KMFL.RP.S.0011.000000T0000Z-210322T1200Z/ Coastal Broward-Coastal Miami-Dade- 959 AM EDT Sun Mar 21 2021 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH MONDAY MORNING... * WHAT...Dangerous rip currents. * WHERE...Coastal Broward and Coastal Miami-Dade Counties. * WHEN...Through Monday morning. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
289 WHUS42 KMFL 211903 CFWMFL Coastal Hazard Message National Weather Service Miami FL 303 PM EDT Sun Mar 21 2021 FLZ168-221200- /O.CON.KMFL.SU.Y.0003.000000T0000Z-210322T1200Z/ /O.CON.KMFL.RP.S.0011.000000T0000Z-210322T1200Z/ Coastal Palm Beach- 303 PM EDT Sun Mar 21 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT MONDAY... ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH MONDAY MORNING... * WHAT...For the High Surf Advisory, large breaking waves of 5 to 7 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Coastal Palm Beach County. * WHEN...For the High Surf Advisory, until 8 AM EDT Monday. For the High Rip Current Risk, through Monday morning. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$ FLZ172-173-221200- /O.CON.KMFL.RP.S.0011.000000T0000Z-210322T1200Z/ Coastal Broward-Coastal Miami-Dade- 303 PM EDT Sun Mar 21 2021 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH MONDAY MORNING... * WHAT...Dangerous rip currents. * WHERE...Coastal Broward and Coastal Miami-Dade Counties. * WHEN...Through Monday morning. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
539 WHUS42 KMFL 220733 CFWMFL Coastal Hazard Message National Weather Service Miami FL 333 AM EDT Mon Mar 22 2021 FLZ168-221545- /O.EXT.KMFL.RP.S.0011.000000T0000Z-210323T0000Z/ /O.CON.KMFL.SU.Y.0003.000000T0000Z-210322T1200Z/ Coastal Palm Beach- 333 AM EDT Mon Mar 22 2021 ...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH THIS EVENING... ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 8 AM EDT THIS MORNING... * WHAT...For the High Surf Advisory, large breaking waves of 5 to 7 feet in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Coastal Palm Beach County. * WHEN...For the High Surf Advisory, until 8 AM EDT this morning. For the High Rip Current Risk, through this evening. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced swimmers should remain out of the water due to dangerous surf conditions. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$ FLZ172-173-221545- /O.EXT.KMFL.RP.S.0011.000000T0000Z-210323T0000Z/ Coastal Broward-Coastal Miami-Dade- 333 AM EDT Mon Mar 22 2021 ...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH THIS EVENING... * WHAT...Dangerous rip currents. * WHERE...Coastal Broward and Coastal Miami-Dade Counties. * WHEN...Through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
803 WHUS42 KMFL 221152 CFWMFL Coastal Hazard Message National Weather Service Miami FL 752 AM EDT Mon Mar 22 2021 FLZ168-230000- /O.EXP.KMFL.SU.Y.0003.000000T0000Z-210322T1200Z/ /O.CON.KMFL.RP.S.0011.000000T0000Z-210323T0000Z/ Coastal Palm Beach- 752 AM EDT Mon Mar 22 2021 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH THIS EVENING... * WHAT...Dangerous rip currents. * WHERE...Coastal Palm Beach County. * WHEN...Through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$ FLZ172-173-230000- /O.CON.KMFL.RP.S.0011.000000T0000Z-210323T0000Z/ Coastal Broward-Coastal Miami-Dade- 752 AM EDT Mon Mar 22 2021 ...HIGH RIP CURRENT RISK REMAINS IN EFFECT THROUGH THIS EVENING... * WHAT...Dangerous rip currents. * WHERE...Coastal Broward and Coastal Miami-Dade Counties. * WHEN...Through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
Nearby
High Surf Advisories in Florida, 2021Every high surf advisory in 2021
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.