Alert archive / Florida / High Surf Advisories in 2018

High Surf Advisory 5, NWS Tallahassee, FL

October 31, 2018Bay County, Gulf County, Walton County, Florida

NWS Tallahassee, FL issued this high surf advisory at Oct 31, 2018, 2:01 PM CDT for Bay County, Gulf County, Walton County, Florida. It took effect at Nov 1, 2018, 7:00 AM CDT. It was in force for 18 hr.

The area

The counties it named.

The facts

Issued: Oct 31, 2018, 2:01 PM CDT (19:01 UTC)
In effect from: Nov 1, 2018, 7:00 AM CDT
Expired: Nov 2, 2018, 1:00 AM CDT
In force: 18 hr
Issued by: NWS Tallahassee, FL

Counties Bay County, FL, Gulf County, FL, Walton County, FL

The radar

The Eglin Afb radar (KEVX), 41 km from the middle of the area, began a volume at 19:02 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 12:00Z, 7.0 hours before the alert went out and 134 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1452 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: 51 m²/s²
0-3 km storm-relative helicity: 55 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

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 Tallahassee, FL wrote its last area forecast discussion before this high surf advisory went out at Oct 31, 12:14 PM CDT, 1 hour 47 minutes earlier.

Area forecast discussion, Oct 31, 12:14 PM CDT, 1 hour 47 minutes before

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The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Oct 31, 2:35 AM CDT	Small Craft Advisory	TAE		46 hr
Oct 31, 2:44 PM CDT	Rip Current Statement	TAE	Bay, Franklin, Gulf, Wakulla, Walton	56 hr

Nearby

High Surf Advisories in Florida, 2018 Every 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.