Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Miami, FL

May 17, 2012Glades County, Florida

NWS Miami, FL issued this special weather statement at May 17, 2012, 3:32 PM EDT for Glades County, Florida. It was in force for 43 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
May 17, 2012, 3:32 PM EDT (19:32 UTC)
Expired
May 17, 2012, 4:15 PM EDT
In force
43 min
Issued by
NWS Miami, FL

County Glades County, FL

The radar

The Melbourne radar (KMLB), 128 km from the middle of the area, began a volume at 19:34 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 12:00Z, 7.5 hours before the alert went out and 160 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, Miami, FL at 12:00Z on 2012-05-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 498 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, Miami, FL at 12:00Z on 2012-05-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 102 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
498 J/kg
Mixed-layer CIN
-70 J/kg
Mixed-layer LCL
715 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
102 m²/s²
0-3 km storm-relative helicity
152 m²/s²
Significant tornado parameter
0.3
Supercell composite
1.8

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 May 17, 3:11 PM EDT, 21 minutes earlier.

Area forecast discussion, May 17, 3:11 PM EDT, 21 minutes before
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Hazardous weather outlook, May 17, 10:07 AM EDT, 5 hours 25 minutes before
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA...UPDATED
NATIONAL WEATHER SERVICE MIAMI FL
1007 AM EDT THU MAY 17 2012

AMZ610-630-FLZ063-066>075-168-172>174-180515-
LAKE OKEECHOBEE-BISCAYNE BAY-GLADES-HENDRY-INLAND PALM BEACH-
METRO PALM BEACH-COASTAL COLLIER-INLAND COLLIER-INLAND BROWARD-
METRO BROWARD-INLAND MIAMI DADE-METRO MIAMI DADE-MAINLAND MONROE-
COASTAL PALM BEACH-COASTAL BROWARD-COASTAL MIAMI DADE-
FAR SOUTH MIAMI DADE-
1007 AM EDT THU MAY 17 2012

...ISOLATED STRONG TO SEVERE THUNDERSTORMS POSSIBLE THIS AFTERNOON/EVENING...

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA.

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS: THUNDERSTORMS ARE FORECAST TO DEVELOP ACROSS SOUTH
FLORIDA THIS AFTERNOON AND EVENING. THUNDERSTORMS ARE MOST LIKELY
BETWEEN 3 AND 8 PM. WHILE INSTABILITY WILL BE SOMEWHAT LIMITED,
INCREASING WIND SHEAR WILL ALLOW FOR THE POSSIBILITY OF A FEW STRONG
TO PERHAPS SEVERE THUNDERSTORMS DEVELOPING THIS AFTERNOON AND EVENING,
CAPABLE OF PRODUCING FREQUENT LIGHTNING, STRONG WIND GUSTS, HAIL AND
HEAVY RAINS. ALSO, A BRIEF TORNADO JUST CANNOT BE RULED OUT ALONG THE
ATLANTIC COAST.

WIND: WIND GUSTS UP TO 60 MPH WILL BE POSSIBLE WITH THE STRONGEST
THUNDERSTORMS THAT DEVELOP.

HAIL: HAIL UP TO QUARTER SIZE WILL BE POSSIBLE WITH THE STRONGEST
THUNDERSTORMS THAT DEVELOP.

FLOODING: LOCALLY HEAVY RAINFALL WILL BE POSSIBLE WITH THE
THUNDERSTORMS THIS AFTERNOON AND EVENING, WITH LOCALIZED RAINFALL
AMOUNTS OF 2 TO 4 INCHES POSSIBLE, ESPECIALLY ACROSS THE INTERIOR
AND EAST COAST. ISOLATED STREET FLOODING AND FLOODING OF POORLY
DRAINED LOCALES WILL BE POSSIBLE ACROSS SOUTH FLORIDA THIS
AFTERNOON AND EVENING.

TORNADOES: A BRIEF TORNADO JUST CANNOT BE RULED OUT ALONG THE ATLANTIC
COAST LATE THIS AFTERNOON INTO THIS EVENING.

WATERSPOUTS: A BRIEF WATERSPOUT IS POSSIBLE ACROSS BISCAYNE BAY AND
THE ATLANTIC WATERS LATE THIS AFTERNOON AND EVENING.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY

THUNDERSTORMS ARE IN THE FORECAST DAILY WITH LIGHTNING AND
LOCALIZED HEAVY RAINS BEING THE PRIMARY RISKS AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND THIS EVENING.

FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN
MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.

GREGORIA

In the hours before

Special weather statement, May 17, 3:32 PM EDT, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
May 17, 3:54 AM EDTSpecial Weather StatementMFLBroward36 min
May 17, 6:02 AM EDTSpecial Marine WarningMFL58 min
May 17, 7:11 AM EDTSpecial Marine WarningMFL2 hr
May 17, 3:44 PM EDTSpecial Weather StatementMFLBroward31 min
May 17, 4:08 PM EDTSpecial Weather StatementMFLBroward37 min
May 17, 4:15 PM EDTSpecial Marine WarningMFL60 min
May 17, 4:23 PM EDTSpecial Weather StatementMFLGlades37 min
May 17, 5:14 PM EDTSpecial Marine WarningMFL61 min
May 17, 6:10 PM EDTSpecial Weather StatementMFLPalm Beach35 min
May 17, 6:17 PM EDTSpecial Marine WarningMFL58 min
May 17, 6:57 PM EDTSpecial Weather StatementMFLMartin48 min
May 17, 7:16 PM EDTSevere Thunderstorm WarningMFLPalm Beach44 min
May 17, 7:50 PM EDTSpecial Marine WarningMFL55 min

Nearby

Special Weather Statements in Florida, 2012Every special weather statement in 2012

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.