Alert archive / Florida / High Surf Advisories in 2018
High Surf Advisory 11, NWS Mobile, AL
NWS Mobile, AL issued this high surf advisory at Dec 20, 2018, 5:41 AM CST for Okaloosa County, Florida. It took effect at Dec 21, 2018, 12:00 AM CST. It was in force for 18 hr.
The area
The counties it named.
The facts
- Issued
- Dec 20, 2018, 5:41 AM CST (11:41 UTC)
- In effect from
- Dec 21, 2018, 12:00 AM CST
- Expired
- Dec 21, 2018, 6:00 PM CST
- In force
- 18 hr
- Issued by
- NWS Mobile, AL
County Okaloosa County, FL
The radar
The Eglin Afb radar (KEVX), 65 km from the middle of the area, began a volume at 11:45 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
Tallahassee Rgnl, FL (KTLH), launched 00:00Z, 11.7 hours before the alert went out and 221 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
- 1158 m above ground
- 0-6 km bulk shear
- 72 kt
- 0-1 km storm-relative helicity
- 189 m²/s²
- 0-3 km storm-relative helicity
- 84 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 Mobile, AL wrote its last area forecast discussion before this high surf advisory went out at Dec 20, 4:47 AM CST, 54 minutes earlier.
Area forecast discussion, Dec 20, 4:47 AM CST, 54 minutes before
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</html>Hazardous weather outlook, Dec 20, 5:04 AM CST, 37 minutes before
Hazardous Weather Outlook...UPDATED National Weather Service Mobile AL 504 AM CST Thu Dec 20 2018 ALZ051>060-261>266-FLZ201>206-MSZ067-075-076-078-079-211115- Choctaw-Washington-Clarke-Wilcox-Monroe-Conecuh-Butler-Crenshaw- Escambia-Covington-Mobile Inland-Baldwin Inland-Mobile Central- Baldwin Central-Mobile Coastal-Baldwin Coastal-Escambia Inland- Escambia Coastal-Santa Rosa Inland-Santa Rosa Coastal- Okaloosa Inland-Okaloosa Coastal-Wayne-Perry-Greene-Stone-George- 504 AM CST Thu Dec 20 2018 This Hazardous Weather Outlook is for south central Alabama, southwest Alabama, northwest Florida and southeast Mississippi. .DAY ONE...Today and Tonight. Breezy to windy conditions will develop late today and tonight in the wake of a strong cold front. The stronger winds will occur over the coastal counties of both Alabama and Northwest Florida during this time frame. As a result, a wind advisory may be required for these areas late today through Friday morning. A moderate risk for rip currents will be in effect through tonight. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Breezy to windy conditions will continue through Friday. A wind advisory may be needed for the coastal areas of Alabama and Northwest Florida on Friday. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. GMZ630-633>636-211115- Northern Mobile Bay-Perdido Bay-Pensacola Bay System- Western Choctawhatchee Bay-Eastern Choctawhatchee Bay- 504 AM CST Thu Dec 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT FROM 3 PM THIS AFTERNOON TO NOON CST FRIDAY... This Hazardous Weather Outlook is for the coastal waters of Alabama and northwest Florida. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov/mob (see Fast Access Product Section) for more information about the following hazards. Small Craft Advisory. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov/mob (see Fast Access Product Section) for more information about the following hazards. Small Craft Advisory. GMZ631-632-650-655-670-675-211115- Southern Mobile Bay-Mississippi Sound- Coastal waters from Pensacola FL to Pascagoula MS out 20 NM- Coastal waters from Okaloosa Walton County Line FL to Pensacola FL out 20 NM-Waters from Pensacola FL to Pascagoula MS from 20 to 60 NM- Waters from Okaloosa Walton County Line FL to Pensacola FL from 20 to 60 NM- 504 AM CST Thu Dec 20 2018 ...SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM CST THIS AFTERNOON... ...GALE WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO NOON CST FRIDAY... ...SMALL CRAFT ADVISORY IN EFFECT FROM NOON FRIDAY TO MIDNIGHT CST FRIDAY NIGHT... This Hazardous Weather Outlook is for the coastal waters of Alabama and northwest Florida. .DAY ONE...Today and Tonight. Please listen to NOAA Weather Radio or go to weather.gov/mob (see Fast Access Product Section) for more information about the following hazards. Small Craft Advisory. Gale Warning. .DAYS TWO THROUGH SEVEN...Friday through Wednesday. Please listen to NOAA Weather Radio or go to weather.gov/mob (see Fast Access Product Section) for more information about the following hazards. Gale Warning. Small Craft Advisory. Very hazardous wind and wave conditions for small craft will be likely late today through Friday as winds and wind gusts increase to near Gale Force. As a result a Gale warning is now in effect for the open gulf waters of Alabama and Northwest Florida out to 60 nm including the lower end of Mobile Bay and the Mississippi Sound east of Pascagoula.
The office that day
Everything else NWS Mobile, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 20, 2:48 AM CST | Small Craft Advisory | MOB | 47 hr | |
| Dec 20, 5:41 AM CST | Rip Current Statement | MOB | Baldwin, Mobile | 57 hr |
| Dec 20, 5:49 AM CST | Wind Advisory | MOB | Baldwin, Mobile | 30 hr |
| Dec 20, 10:14 AM CST | Small Craft Advisory | MOB | 8 hr |
Nearby
High Surf Advisories in Florida, 2018Every high surf advisory 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.