Alert archive / Florida / High Surf Advisories in 2021
High Surf Advisory 7, NWS Mobile, AL
NWS Mobile, AL issued this high surf advisory at Jun 17, 2021, 5:52 AM CDT for Baldwin County, Mobile County, Alabama; Escambia County, Okaloosa County, Santa Rosa County, Florida. It took effect at Jun 18, 2021, 7:00 AM CDT. It was in force for .
The area
The counties it named.
The facts
- Issued
- Jun 17, 2021, 5:52 AM CDT (10:52 UTC)
- In effect from
- Jun 18, 2021, 7:00 AM CDT
- Expired
- Jun 17, 2021, 4:36 PM CDT
- In force
- Issued by
- NWS Mobile, AL
Counties Baldwin County, AL, Mobile County, AL, Escambia County, FL, Okaloosa County, FL, Santa Rosa County, FL
The radar
The Mobile radar (KMOB), 82 km from the middle of the area, began a volume at 10:56 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
Slidell Radar S, LA (KSIL), launched 00:00Z, 10.9 hours before the alert went out and 227 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
- 674 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 1515 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted.
120 WHUS44 KMOB 171052 CFWMOB Coastal Hazard Message National Weather Service Mobile AL 552 AM CDT Thu Jun 17 2021 ALZ265-266-FLZ202-204-206-171900- /O.NEW.KMOB.SU.Y.0007.210618T1200Z-210621T1100Z/ /O.NEW.KMOB.RP.S.0016.210618T1200Z-210621T1100Z/ Mobile Coastal-Baldwin Coastal-Escambia Coastal- Santa Rosa Coastal-Okaloosa Coastal- 552 AM CDT Thu Jun 17 2021 ...HIGH SURF ADVISORY IN EFFECT FROM 7 AM FRIDAY TO 6 AM CDT MONDAY... ...HIGH RIP CURRENT RISK IN EFFECT FROM FRIDAY MORNING THROUGH LATE SUNDAY NIGHT... * WHAT...For the High Surf Advisory, large breaking waves of up to 6 to 8 feet expected in the surf zone. For the High Rip Current Risk, dangerous rip currents expected. * WHERE...In Alabama, Mobile Coastal and Baldwin Coastal Counties. In Florida, Escambia Coastal, Santa Rosa Coastal and Okaloosa Coastal Counties. * WHEN...For the High Surf Advisory, from 7 AM Friday to 6 AM CDT Monday. For the High Rip Current Risk, from Friday morning through late Sunday night. * 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. && $$
1 follow-up statement
195 WHUS44 KMOB 172136 CFWMOB Coastal Hazard Message National Weather Service Mobile AL 436 PM CDT Thu Jun 17 2021 ALZ265-266-180600- /O.UPG.KMOB.SU.Y.0007.210618T1200Z-210621T1100Z/ /O.NEW.KMOB.SU.W.0001.210618T1300Z-210621T1100Z/ /O.NEW.KMOB.CF.Y.0003.210619T0500Z-210619T2300Z/ /O.EXT.KMOB.RP.S.0016.210617T2136Z-210621T1100Z/ Mobile Coastal-Baldwin Coastal- 436 PM CDT Thu Jun 17 2021 ...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH LATE SUNDAY NIGHT... ...HIGH SURF WARNING IN EFFECT FROM 8 AM FRIDAY TO 6 AM CDT MONDAY... ...COASTAL FLOOD ADVISORY IN EFFECT FROM MIDNIGHT FRIDAY NIGHT TO 6 PM CDT SATURDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 7 to 11 feet expected in the surf zone. For the Coastal Flood Advisory, minor coastal flooding expected. For the High Rip Current Risk, dangerous rip currents. * WHERE...Mobile Coastal and Baldwin Coastal Counties. * WHEN...For the High Surf Warning, from 8 AM Friday to 6 AM CDT Monday. For the Coastal Flood Advisory, from midnight Friday night to 6 PM CDT Saturday. For the High Rip Current Risk, through late Sunday night. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life- threatening swimming conditions and significant beach erosion can be expected. Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. 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. && $$ FLZ202-204-206-180600- /O.UPG.KMOB.SU.Y.0007.210618T1200Z-210621T1100Z/ /O.NEW.KMOB.SU.W.0001.210618T1300Z-210621T1100Z/ /O.EXT.KMOB.RP.S.0016.210617T2136Z-210621T1100Z/ Escambia Coastal-Santa Rosa Coastal-Okaloosa Coastal- 436 PM CDT Thu Jun 17 2021 ...HIGH RIP CURRENT RISK NOW IN EFFECT THROUGH LATE SUNDAY NIGHT... ...HIGH SURF WARNING IN EFFECT FROM 8 AM FRIDAY TO 6 AM CDT MONDAY... * WHAT...For the High Surf Warning, dangerously large breaking waves of 6 to 9 feet expected in the surf zone. For the High Rip Current Risk, dangerous rip currents. * WHERE...Escambia Coastal, Santa Rosa Coastal and Okaloosa Coastal Counties. * WHEN...For the High Surf Warning, from 8 AM Friday to 6 AM CDT Monday. For the High Rip Current Risk, through late Sunday night. * IMPACTS...Breaking waves can sweep people off jetties and docks, and into dangerous seas. Life-threatening swimming conditions and significant beach erosion can be expected. Rip currents can sweep even the best swimmers away from shore into deeper water. PRECAUTIONARY/PREPAREDNESS ACTIONS... Everyone should remain out of the water due to life-threatening surf conditions. Stay off of jetties, piers, and other waterside infrastructure. 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. && $$ ALZ263-264-180600- /O.NEW.KMOB.CF.Y.0003.210619T0500Z-210619T2300Z/ Mobile Central-Baldwin Central- 436 PM CDT Thu Jun 17 2021 ...COASTAL FLOOD ADVISORY IN EFFECT FROM MIDNIGHT FRIDAY NIGHT TO 6 PM CDT SATURDAY... * WHAT...Minor coastal flooding expected. * WHERE...Mobile Central and Baldwin Central Counties. * WHEN...From midnight Friday night to 6 PM CDT Saturday. * IMPACTS...Flooding of lots, parks, and roads with only isolated road closures expected. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && $$
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 5:52 AM CDT | Rip Current Statement | MOB | Baldwin, Mobile | 6 days |
| Jun 17, 1:58 PM CDT | Flash Flood Watch | MOB | Baldwin, Butler, Choctaw, Clarke, Conecuh, Covington and 6 more | 51 hr |
| Jun 17, 4:34 PM CDT | Small Craft Advisory | MOB | 14 hr | |
| Jun 17, 4:34 PM CDT | Tropical Storm Warning | MOB | Baldwin, Mobile | 47 hr |
| Jun 17, 4:36 PM CDT | Coastal Flood Advisory | MOB | Baldwin, Mobile | 54 hr |
| Jun 17, 4:36 PM CDT | High Surf Warning | MOB | Baldwin, Mobile | 60 hr |
Nearby
High Surf Advisories in Florida, 2021High Surf Advisories in Alabama, 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.