Alert archive / Florida / Special Weather Statements in 2014

Special Weather Statement, NWS Miami, FL

March 18, 2014Collier County, Hendry County, Florida

NWS Miami, FL issued this special weather statement at Mar 18, 2014, 5:09 AM EDT for Collier County, Hendry County, Florida. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 18, 2014, 5:09 AM EDT (09:09 UTC)
Expired: Mar 18, 2014, 6:00 AM EDT
In force: 51 min
Issued by: NWS Miami, FL

Counties Collier County, FL, Hendry County, FL

The radar

The Miami radar (KAMX), 130 km from the middle of the area, began a volume at 09:10 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

Miami, FL (KMFL), launched 00:00Z, 9.2 hours before the alert went out and 114 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: 521 J/kg
Mixed-layer CIN: -29 J/kg
Mixed-layer LCL: 1147 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 232 m²/s²
0-3 km storm-relative helicity: 215 m²/s²
Significant tornado parameter: 0.5
Supercell composite: 5.3

Open this sounding in Storm Lab

The text

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

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Miami, FL wrote its last area forecast discussion before this special weather statement went out at Mar 18, 3:25 AM EDT, 1 hour 44 minutes earlier.

Area forecast discussion, Mar 18, 3:25 AM EDT, 1 hour 44 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MIAMI FL
325 AM EDT TUE MAR 18 2014

.DISCUSSION...
THE EARLY MORNING WATER VAPOR LOOP SHOWED THE MAIN SHORTWAVE
TROUGH ASSOCIATED WITH THE COLD FRONT THAT HAS BEGUN TO PUSH
ASHORE IN THE TAMPA AREA BEGINNING TO BECOME MORE NEUTRAL AND MAY
BECOME NEGATIVELY TILTED AS IT CONTINUES TO LIFT ENE OVER THE
FLORIDA PANHANDLE TOWARD SW/SC GEORGIA DUE THE STRONG MID/UPPER
WINDS WRAPPING AROUND ITS BASE. THIS FLOW IS REFLECTED WELL AT THE
TBW RADAR SOUTHEAST OF THIS UPPER FEATURE...WHICH DEPICTS AROUND
50 KTS BETWEEN 2-5 KFT AND AROUND 70 KNOTS AROUND 500 MB. AT THIS
TIME IT APPEARS THE MAIN LIMITING FACTOR ACROSS SRN FL COULD BE
THE INSTABILITY. THE LATEST LAPS ANALYSIS INDICATED THE SFC-BASED
CAPE RANGING FROM 175-200 J/KG ACROSS THE LOCAL AREA. THE LATEST
WRF/HRRR MODEL REFLECTIVITIES...HOWEVER...HAVE INITIALIZED FAIRLY
WELL WITH THE CURRENT PATTERN AND CONTINUE TO SHOW A MORE
PRONOUNCED LINE OF SHOWERS REDEVELOPING BY DAYBREAK AS IT
PROGRESSES ACROSS THE SRN FLORIDA PENINSULA THIS MORNING. DESPITE
THE LIMITED INSTABILITY NOTED...ANY HEAVY SHOWERS OR ISOLATED
STORMS THAT DEVELOP ALONG AND AHEAD OF THE FRONTAL BOUNDARY COULD
TRANSLATE TO 45 TO 55 KNOT WIND GUSTS REACHING THE SFC (45-50 KT
ON THE MIA VWP AT 2-4 KFT).

THE PREVIOUSLY DISCUSSED UPPER TROUGH IS PROGGED TO QUICKLY LIFT OUT
TO THE NE THROUGH THE DAY TODAY. THE ASSOCIATED COLD FRONT SHOULD
CLEAR THE SOUTHEAST FL COAST THROUGH THE EARLY/MID MORNING HOURS. NW
FLOW AND PLENTY OF DRY AIR WILL SPREAD ACROSS THE AREA IN ITS WAKE.
ALTHOUGH SLIGHTLY COOLER CONDITIONS WILL BE EXPECTED TONIGHT INTO
WEDNESDAY MORNING...TEMPERATURES ARE ONLY EXPECTED TO DIP BACK TO
AROUND NORMAL...MAINLY FOR THE INTERIOR AND NWRN LOCATIONS AROUND
THE LAKE. THE LATEST GUIDANCE CONTINUES TO INDICATE THE EAST COAST
LOCATIONS REMAINING SLIGHT ABOVE NORMAL THROUGH THE PERIOD. THIS IS
MAINLY DUE TO ZONAL FLOW ALOFT EXPECTED THROUGH THE MID-WEEK PERIOD
AND THE LOW-LEVEL FLOW QUICKLY RETURNING TO THE ENE AS HIGH PRESSURE
BUILDS EAST NORTH OF THE LOCAL AREA.

&&

.MARINE...
A COLD FRONT WILL PUSH ACROSS THE MARINE AREA THROUGH THE EARLY
TO MID MORNING HOURS TODAY...WHICH WILL KEEP THE RAIN CHANCES UP.
A FEW STORMS OR HEAVY SHOWERS ASSOCIATED WITH THIS FRONT COULD
LEAD TO STRONG WIND GUSTS AND LOCALLY CHOPPIER CONDITIONS IN AND
AROUND THE ACTIVITY. HIGH PRESSURE AND MUCH DRIER CONDITIONS WILL
BUILD EAST OVER THE REGION THROUGH THE MID-WEEK PERIOD WITH WINDS
AND SEAS TRENDING BACK DOWN.

&&

.AVIATION...
MAIN CHALLENGE IS FORECASTING THE TIMING OF THE SHRA/TSRA ACROSS
THE AREA OVERNIGHT INTO THE PRE-DAWN HOURS. MODELS AND CURRENT
TRENDS ARE CONSISTENT IN SHOWING A BROKEN LINE OF CONVECTION
MOVING THROUGH THE GULF COAST/KAPF AREA BETWEEN 06Z-09Z, THEN OVER
THE SE FLORIDA AIRPORTS BETWEEN 09Z-12Z. CONVECTION NOT TOO STRONG
AT PRESENT TIME AND TAFS REFLECT VCTS WITH TEMPO SHRA, BUT THIS
WILL BE MONITORED AS THERE'S STILL A CHANCE CONVECTION MAY
INTENSIFY AS IT APPROACHES SE FLORIDA TOWARD SUNRISE. DON'T EXPECT
ANY IFR CONDITIONS, AT LEAST NOT LASTING TOO LONG, WITH MVFR
CEILING/VSBY FOR 2-3 HOURS AROUND TIME OF PRECIP AND FRONTAL
PASSAGE. FRONT MOVES THROUGH BEFORE 12Z AT KAPF AND AROUND 12Z AT
SE FLORIDA AIRPORTS, WITH WIND SHIFT TO W/NW AND SLOW CLEARING. BY
18Z ALL SITES SHOULD BE MOSTLY CLEAR.

&&

.PRELIMINARY POINT TEMPS/POPS...
WEST PALM BEACH  81  65  83  67 /  30  10  10  10
FORT LAUDERDALE  81  67  83  70 /  30  10  10  10
MIAMI            81  67  84  69 /  30  10  10  10
NAPLES           78  59  83  63 /  10  10  10  10

&&

.MFL WATCHES/WARNINGS/ADVISORIES...
FL...NONE.
AM...NONE.
GM...NONE.
&&

SHORT TERM...59/RM
LONG TERM....85/AG

Hazardous weather outlook, Mar 18, 5:01 AM EDT, 8 minutes before

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In the hours before

Special weather statement, Mar 18, 4:16 AM EDT, 53 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
416 AM EDT TUE MAR 18 2014

FLZ063-066-067-069-070-180900-
INLAND COLLIER COUNTY FL-HENDRY FL-GLADES FL-
INLAND PALM BEACH COUNTY FL-COASTAL COLLIER COUNTY FL-
416 AM EDT TUE MAR 18 2014

..A SIGNIFICANT WEATHER ADVISORY IS IN EFFECT FOR STRONG WIND GUSTS
UP TO 50 MPH FOR GLADES...HENDRY AND NORTHERN COLLIER COUNTIES...

AT 412 AM EDT...DOPPLER RADAR WAS TRACKING A LINE OF SHOWERS AND
ISOLATED THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES NORTHWEST
OF BRIGHTON SEMINOLE TO NEAR GOLDEN GATE...AND MOVING EAST AT 40 MPH.

WIND GUSTS OF 40 TO 50 MPH CAN BE EXPECTED ALONG THIS LINE. THESE
WINDS CAN BLOW AROUND LOOSE OBJECTS, UPROOT SMALL TREES AND KNOCK
DOWN POWER LINES.

LOCATIONS IMPACTED INCLUDE...
IMMOKALEE...CLEWISTON...LA BELLE...PALMDALE...DEVILS GARDEN...
LAKEPORT...MOORE HAVEN...FELDA...MUSE...ORTONA...BUCKHEAD RIDGE...
BRIGHTON SEMINOLE AND ORANGE TREE.

LAT...LON 2719 8091 2715 8087 2707 8096 2704 8093
      2693 8112 2682 8106 2681 8095 2673 8085
      2636 8102 2619 8181 2632 8177 2632 8166
      2642 8166 2643 8156 2703 8152 2703 8127
      2712 8127 2712 8117 2721 8117
TIME...MOT...LOC 0812Z 247DEG 34KT 2713 8118 2624 8175

MOLLEDA

Special weather statement, Mar 18, 5:09 AM EDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 18, 3:24 AM EDT	Special Marine Warning	MFL		66 min
Mar 18, 4:16 AM EDT	Special Weather Statement	MFL	Glades, Hendry	44 min
Mar 18, 4:24 AM EDT	Rip Current Statement	MFL	Collier	16 hr
Mar 18, 4:34 AM EDT	Special Marine Warning	MFL		41 min
Mar 18, 5:17 AM EDT	Special Marine Warning	MFL		43 min
Mar 18, 5:50 AM EDT	Special Marine Warning	MFL		55 min
Mar 18, 6:14 AM EDT	Special Weather Statement	MFL	Broward	46 min
Mar 18, 6:54 AM EDT	Special Weather Statement	MFL	Broward	51 min
Mar 18, 6:57 AM EDT	Special Marine Warning	MFL		48 min
Mar 18, 7:30 AM EDT	Special Marine Warning	MFL		45 min
Mar 18, 7:45 AM EDT	Special Weather Statement	MFL	Miami-Dade	30 min
Mar 18, 8:14 AM EDT	Special Marine Warning	MFL		91 min

Nearby

Special Weather Statements in Florida, 2014 Every special weather statement in 2014

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.