Alert archive / Florida / High Surf Advisories in 2017

High Surf Advisory 6, NWS Tampa Bay, FL

October 28, 20176 counties in Florida

NWS Tampa Bay, FL issued this high surf advisory at Oct 28, 2017, 3:33 PM EDT for 6 counties in Florida. It took effect at Oct 29, 2017, 8:00 AM EDT. It was in force for 15 hr.

The area

The counties it named.

The facts

Issued
Oct 28, 2017, 3:33 PM EDT (19:33 UTC)
In effect from
Oct 29, 2017, 8:00 AM EDT
Expired
Oct 29, 2017, 11:00 PM EDT
In force
15 hr
Issued by
NWS Tampa Bay, FL

Counties Charlotte County, FL, Hillsborough County, FL, Lee County, FL, Manatee County, FL, Pinellas County, FL, Sarasota County, FL

The radar

The Tampa radar (KTBW), 44 km from the middle of the area, began a volume at 19:37 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 12:00Z, 7.6 hours before the alert went out and 215 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-pSkew-T log-p diagram, Cape Canaveral, FL at 12:00Z on 2017-10-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Cape Canaveral, FL at 12:00Z on 2017-10-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 53 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
8 J/kg
Mixed-layer CIN
-27 J/kg
Mixed-layer LCL
1324 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
53 m²/s²
0-3 km storm-relative helicity
83 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Oct 28, 3:08 PM EDTLake Wind AdvisoryTBWCharlotte, DeSoto, Hardee, Hernando, Highlands, Hillsborough and 6 more26 hr
Oct 28, 3:17 PM EDTSmall Craft AdvisoryTBW32 hr
Oct 28, 3:33 PM EDTRip Current StatementTBWCharlotte, Hillsborough, Lee, Manatee, Pinellas, Sarasota48 hr
Oct 28, 4:19 PM EDTAreal Flood AdvisoryTBWCharlotte, Sarasota86 min
Oct 28, 5:58 PM EDTAreal Flood AdvisoryTBWHighlands4 hr

Nearby

High Surf Advisories in Florida, 2017Every high surf advisory in 2017

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.