Alert archive / Florida / Rip Current Statements in 2011

Rip Current Statement 4, NWS Tallahassee, FL

March 30, 20114 counties in Florida

NWS Tallahassee, FL issued this rip current statement at Mar 30, 2011, 3:42 AM CDT for 4 counties in Florida. It was in force for 14 hr.

The area

The counties it named.

The facts

Issued: Mar 30, 2011, 3:42 AM CDT (08:42 UTC)
Expired: Mar 30, 2011, 6:00 PM CDT
In force: 14 hr
Issued by: NWS Tallahassee, FL

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

The radar

The Eglin Afb radar (KEVX), 64 km from the middle of the area, began a volume at 08:46 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, 8.7 hours before the alert went out and 116 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: 2 J/kg
Mixed-layer CIN: -294 J/kg
Mixed-layer LCL: 610 m above ground
0-6 km bulk shear: 41 kt
0-1 km storm-relative helicity: 102 m²/s²
0-3 km storm-relative helicity: 168 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

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

636 
WHUS42 KTAE 300842
CFWTAE

URGENT - IMMEDIATE BROADCAST REQUESTED
COASTAL HAZARD MESSAGE
NATIONAL WEATHER SERVICE TALLAHASSEE FL
442 AM EDT WED MAR 30 2011

...THERE IS A HIGH RISK OF RIP CURRENTS TODAY ALONG THE FLORIDA
PANHANDLE AND THE BIG BEND BEACHES...

.MODERATE SOUTHERLY WINDS AHEAD OF AN APPROACHING COLD FRONT WILL
LEAD TO BUILDING SURF AND STRENGTHENING RIP CURRENTS TODAY ALONG
THE PANHANDLE AND BIG BEND BEACHES. SURF AND RIP CURRENTS WILL
SUBSIDE THROUGH THE DAY THURSDAY.

FLZ108-112-114-115-302300-
/O.NEW.KTAE.RP.S.0004.110330T0842Z-110330T2300Z/
SOUTH WALTON-COASTAL BAY-COASTAL GULF-COASTAL FRANKLIN-
442 AM EDT WED MAR 30 2011 /342 AM CDT WED MAR 30 2011/

...RIP CURRENT RISK IN EFFECT THROUGH THIS EVENING...

* SURF: 2 TO 4 FEET.

* TIMING: SURF AND RIP CURRENT RISK WILL REMAIN ELEVATED THROUGH
  THE DAY...THEN GRADUALLY DIMINISH TONIGHT INTO THURSDAY.

.PRECAUTIONARY/PREPAREDNESS ACTIONS...

THERE IS A HIGH RISK OF RIP CURRENTS ALONG THE FLORIDA PANHANDLE
AND BIG BEND BEACHES. RIP CURRENTS ARE POWERFUL CHANNELS OF WATER
FLOWING QUICKLY AWAY FROM SHORE...WHICH OCCUR MOST OFTEN AT LOW
SPOTS OR BREAKS IN THE SANDBAR AND IN THE VICINITY OF STRUCTURES
SUCH AS JETTIES AND PIERS. HEED THE ADVICE OF LIFEGUARDS AND THE
BEACH PATROL. PAY ATTENTION TO FLAGS AND POSTED SIGNS. IF YOU
BECOME CAUGHT IN A RIP CURRENT...DO NOT PANIC. REMAIN CALM AND
BEGIN TO SWIM PARALLEL TO SHORE. ONCE YOU ARE AWAY FROM THE FORCE
OF THE RIP CURRENT...BEGIN TO SWIM BACK TO THE BEACH. DO NOT
ATTEMPT TO SWIM DIRECTLY AGAINST A RIP CURRENT. EVEN A STRONG
SWIMMER CAN BECOME EXHAUSTED QUICKLY.

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 30, 2:47 AM CDT	Special Marine Warning	TAE		43 min
Mar 30, 2:51 AM CDT	Special Weather Statement	TAE	Wakulla	39 min
Mar 30, 6:49 AM CDT	Special Marine Warning	TAE		56 min
Mar 30, 7:41 AM CDT	Special Marine Warning	TAE		64 min
Mar 30, 8:45 AM CDT	Special Marine Warning	TAE		60 min
Mar 30, 9:01 AM CDT	Special Weather Statement	TAE	Calhoun	59 min
Mar 30, 9:26 AM CDT	Special Weather Statement	TAE	Leon	49 min
Mar 30, 9:43 AM CDT	Special Weather Statement	TAE	Gulf	62 min
Mar 30, 9:44 AM CDT	Special Marine Warning	TAE		2 hr
Mar 30, 11:43 AM CDT	Special Marine Warning	TAE		107 min
Mar 30, 12:39 PM CDT	Tornado Warning	TAE	Taylor	51 min
Mar 30, 1:09 PM CDT	Special Weather Statement	TAE	Dixie	51 min
Mar 30, 1:17 PM CDT	Special Weather Statement	TAE	Lafayette	43 min
Mar 30, 1:27 PM CDT	Severe Thunderstorm Warning	TAE	Dixie, Lafayette	33 min
Mar 30, 2:29 PM CDT	Fire Weather Watch	TAE	Bay, Calhoun, Dixie, Franklin, Gadsden, Gulf and 10 more	23 hr

Nearby

Rip Current Statements in Florida, 2011 Every rip current statement in 2011

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.