Alert archive / Florida / High Surf Advisories in 2021
High Surf Advisory 2, NWS Melbourne, FL
NWS Melbourne, FL issued this high surf advisory at Mar 20, 2021, 4:40 AM EDT for Volusia County, Florida. It was in force for 23 hr.
The area
The counties it named.
The facts
- Issued
- Mar 20, 2021, 4:40 AM EDT (08:40 UTC)
- Expired
- Mar 21, 2021, 3:35 AM EDT
- In force
- 23 hr
- Issued by
- NWS Melbourne, FL
County Volusia County, FL
The radar
The Melbourne radar (KMLB), 116 km from the middle of the area, began a volume at 08:40 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
Cape Canaveral, FL (KXMR), launched 00:00Z, 8.7 hours before the alert went out and 91 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1185 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
756 WHUS42 KMLB 200840 CFWMLB Coastal Hazard Message National Weather Service Melbourne FL 440 AM EDT Sat Mar 20 2021 FLZ141-210000- /O.NEW.KMLB.SU.Y.0002.210320T0840Z-210321T0800Z/ /O.NEW.KMLB.BH.S.0012.210320T0840Z-210321T0000Z/ Coastal Volusia- 440 AM EDT Sat Mar 20 2021 ...HIGH SURF ADVISORY IN EFFECT UNTIL 4 AM EDT SUNDAY... ...BEACH HAZARDS STATEMENT IN EFFECT THROUGH THIS EVENING... * WHAT...Rough surf with breaking waves of 6 to 7 feet. * WHERE...Coastal Volusia County. * WHEN...For the High Surf Advisory, until 4 AM EDT Sunday. For the Beach Hazards Statement, through this evening. * IMPACTS...Minor beach erosion around the time of high tide this afternoon. Large breaking waves can knock you off your feet and make you even more susceptible to becoming caught in the seaward pull of a rip current. PRECAUTIONARY/PREPAREDNESS ACTIONS... High surf will affect the beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. Swimmers should remain out of the water due to large breaking waves and 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. && $$ FLZ047-147-210000- /O.NEW.KMLB.BH.S.0012.210320T0840Z-210321T0000Z/ Southern Brevard-Northern Brevard- 440 AM EDT Sat Mar 20 2021 ...BEACH HAZARDS STATEMENT IN EFFECT THROUGH THIS EVENING... * WHAT...A southward flowing longshore current and a Moderate risk of life threatening rip currents. * WHERE...Brevard county. * WHEN...Through this evening. * IMPACTS...Dangerous swimming conditions. PRECAUTIONARY/PREPAREDNESS ACTIONS... Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help. && $$
2 follow-up statements
466 WHUS42 KMLB 210226 CFWMLB Coastal Hazard Message National Weather Service Melbourne FL 1026 PM EDT Sat Mar 20 2021 FLZ141-210800- /O.CON.KMLB.SU.Y.0002.000000T0000Z-210321T0800Z/ Coastal Volusia- 1026 PM EDT Sat Mar 20 2021 ...HIGH SURF ADVISORY REMAINS IN EFFECT UNTIL 4 AM EDT SUNDAY... * WHAT...Large breaking waves of 4 to 7 feet in the surf zone. * WHERE...Coastal Volusia County. * WHEN...Until 4 AM EDT Sunday. * IMPACTS...Dangerous swimming and surfing conditions and localized beach erosion. PRECAUTIONARY/PREPAREDNESS ACTIONS... High surf will affect the beaches in the advisory area, producing localized beach erosion and dangerous swimming conditions. Swimmers should remain out of the water due to large breaking waves and dangerous surf conditions. && $$
974 WHUS42 KMLB 210735 CFWMLB Coastal Hazard Message National Weather Service Melbourne FL 335 AM EDT Sun Mar 21 2021 FLZ141-220000- /O.CAN.KMLB.SU.Y.0002.000000T0000Z-210321T0800Z/ /O.NEW.KMLB.RP.S.0014.210321T1200Z-210322T0000Z/ Coastal Volusia- 335 AM EDT Sun Mar 21 2021 ...HIGH RIP CURRENT RISK IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... * WHAT...Dangerous rip currents expected. Rough surf with breaking waves 4 to 6 feet will remain a hazard in the surf zone. * WHERE...Coastal Volusia County. * WHEN...From 8 AM EDT this morning through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Moderately large breaking waves can knock you down and make you even more susceptible to becoming caught in the seaward pull of a rip current. Rough surf from breaking waves of 4 to 6 ft may cause minor beach erosion around the time of high tide this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... Rip currents are powerful channels of water flowing quickly away from shore, which occur most often at low spots or breaks in the sandbar and in the vicinity of structures such as jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. && $$ FLZ047-054-059-064-147-220000- /O.NEW.KMLB.RP.S.0014.210321T1200Z-210322T0000Z/ Southern Brevard-Indian River-St. Lucie-Martin-Northern Brevard- 335 AM EDT Sun Mar 21 2021 ...HIGH RIP CURRENT RISK IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH THIS EVENING... * WHAT...Dangerous rip currents expected. Rough surf with breaking waves 4 to 6 feet will remain a hazard in the surf zone. * WHERE...Southern Brevard, Indian River, St. Lucie, Martin and Northern Brevard Counties. * WHEN...From 8 AM EDT this morning through this evening. * IMPACTS...Rip currents can sweep even the best swimmers away from shore into deeper water. Moderately large breaking waves can knock you down and make you even more susceptible to becoming caught in the seaward pull of a rip current. Rough surf from breaking waves of 4 to 6 ft may cause minor beach erosion around the time of high thide this afternoon. PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 jetties and piers. Heed the advice of lifeguards, beach patrol flags and signs. && $$ Watson
The office that day
Everything else NWS Melbourne, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 4:40 AM EDT | Beach Hazards Statement | MLB | Volusia | 15 hr |
| Mar 20, 6:07 PM EDT | Gale Warning | MLB | 4 hr | |
| Mar 20, 6:07 PM EDT | Small Craft Advisory | MLB | 70 hr | |
| Mar 20, 6:09 PM EDT | Wind Advisory | MLB | Volusia | 5 hr |
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.