Alert archive / Florida / Beach Hazards Statements in 2013

Beach Hazards Statement 13, NWS Tampa Bay, FL

April 12, 2013Pinellas County, Florida

NWS Tampa Bay, FL issued this beach hazards statement at Apr 12, 2013, 4:51 AM EDT for Pinellas County, Florida. It took effect at Apr 12, 2013, 10:00 AM EDT. It was in force for 10 hr.

The area

The counties it named.

The facts

Issued
Apr 12, 2013, 4:51 AM EDT (08:51 UTC)
In effect from
Apr 12, 2013, 10:00 AM EDT
Expired
Apr 12, 2013, 8:00 PM EDT
In force
10 hr
Issued by
NWS Tampa Bay, FL

County Pinellas County, FL

The radar

The Tampa radar (KTBW), 40 km from the middle of the area, began a volume at 08:52 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

Tampa Bay, FL (KTBW), launched 00:00Z, 8.9 hours before the alert went out and 40 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, Tampa Bay, FL at 00:00Z on 2013-04-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 951 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Tampa Bay, FL at 00:00Z on 2013-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
951 J/kg
Mixed-layer CIN
-13 J/kg
Mixed-layer LCL
934 m above ground
0-6 km bulk shear
25 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
72 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

196 
WHUS42 KTBW 120851
CFWTBW

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TAMPA BAY RUSKIN FL
451 AM EDT FRI APR 12 2013

...MODERATE RISK OF RIP CURRENTS TODAY...

.GUSTY SOUTH WINDS BECOMING SOUTHWEST DURING THE AFTERNOON 
WILL CREATE A RIP CURRENT RISK AT ALL AREA BEACHES IN WEST
CENTRAL AND SOUTHWEST FLORIDA TODAY.

FLZ050-051-055-060-062-065-130000-
/O.NEW.KTBW.BH.S.0013.130412T1400Z-130413T0000Z/
PINELLAS-HILLSBOROUGH-MANATEE-SARASOTA-CHARLOTTE-LEE-
451 AM EDT FRI APR 12 2013

...BEACH HAZARDS STATEMENT IN EFFECT FROM 10 AM EDT THIS MORNING
THROUGH THIS EVENING...

THE NATIONAL WEATHER SERVICE IN TAMPA BAY RUSKIN HAS ISSUED A
BEACH HAZARDS STATEMENT FOR A MODERATE RISK OF RIP
CURRENTS...WHICH IS IN EFFECT FROM 10 AM EDT THIS MORNING THROUGH
THIS EVENING.

* HAZARDS...MODERATE RISK OF RIP CURRENTS.

* TIMING...LATE MORNING THROUGH EARLY THIS EVENING.

* LOCATION...BEACHES OF WEST CENTRAL AND SOUTHWEST FLORIDA.

* POTENTIAL IMPACTS...A RIP CURRENT IS A 10 TO 30 YARD WIDE
  CHANNEL OF WATER THAT CAN PULL EVEN A STRONG SWIMMER INTO DEEPER
  WATER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A BEACH HAZARDS STATEMENT IS ISSUED WHEN THREATS SUCH AS RIP
CURRENTS...LONGSHORE CURRENTS...SNEAKER WAVES AND OTHER
HAZARDS ARE POSSIBLE. CAUTION SHOULD BE USED WHEN IN OR NEAR THE
WATER. 

PLEASE VISIT THE FOLLOWING WEBSITE TO SHARE YOUR THOUGHTS
ON THE NEW BEACH HAZARDS STATEMENT.

&&

$$


HTTP://WWW.WEATHER.GOV/TAMPA

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 12, 3:36 PM EDTSpecial Weather StatementTBWPinellas54 min
Apr 12, 4:44 PM EDTSpecial Weather StatementTBWPinellas46 min

Nearby

Beach Hazards Statements in Florida, 2013Every beach hazards statement in 2013

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.