Alert archive / Florida / Special Weather Statements in 2012

Special Weather Statement, NWS Miami, FL

December 11, 2012Collier County, Florida

NWS Miami, FL issued this special weather statement at Dec 11, 2012, 9:15 AM EST for Collier County, Florida. It was in force for 45 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
Dec 11, 2012, 9:15 AM EST (14:15 UTC)
Expired
Dec 11, 2012, 10:00 AM EST
In force
45 min
Issued by
NWS Miami, FL

County Collier County, FL

The radar

The Miami radar (KAMX), 134 km from the middle of the area, began a volume at 14:18 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, 2.3 hours before the alert went out and 141 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 2012-12-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1813 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 2012-12-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 73 square meters per square second.193958Sfc1 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
1813 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
537 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
73 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
1.0
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 Dec 11, 6:39 AM EST, 2 hours 36 minutes earlier.

Area forecast discussion, Dec 11, 6:39 AM EST, 2 hours 36 minutes before
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Hazardous weather outlook, Dec 11, 6:25 AM EST, 2 hours 50 minutes before
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In the hours before

Special weather statement, Dec 11, 6:29 AM EST, 2 hours 46 minutes before
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Special weather statement, Dec 11, 9:15 AM EST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Dec 10, 11:40 PM ESTAreal Flood AdvisoryMFLCollier2 hr
Dec 10, 11:45 PM ESTSpecial Marine WarningMFL60 min
Dec 11, 12:02 AM ESTSpecial Weather StatementMFLCollier43 min
Dec 11, 12:34 AM ESTSpecial Weather StatementMFLCollier41 min
Dec 11, 1:12 AM ESTSpecial Weather StatementMFLMonroe48 min
Dec 11, 1:31 AM ESTSevere Thunderstorm WarningMFLBroward, Collier, Miami-Dade, Monroe29 min
Dec 11, 1:47 AM ESTSevere Thunderstorm WarningMFLBroward, Collier, Miami-Dade, Monroe28 min
Dec 11, 1:59 AM ESTSpecial Weather StatementMFLBroward31 min
Dec 11, 2:09 AM ESTSpecial Weather StatementMFLMiami-Dade51 min
Dec 11, 3:12 AM ESTSpecial Weather StatementMFLBroward48 min
Dec 11, 3:47 AM ESTSpecial Marine WarningMFL58 min
Dec 11, 4:52 AM ESTAreal Flood AdvisoryMFLCollier113 min
Dec 11, 6:29 AM ESTSpecial Weather StatementMFLHendry46 min
Dec 11, 8:53 AM ESTAreal Flood AdvisoryMFLCollier112 min
Dec 11, 9:13 AM ESTSpecial Marine WarningMFL32 min
Dec 11, 9:40 AM ESTSpecial Marine WarningMFL95 min
Dec 11, 10:06 AM ESTSpecial Weather StatementMFLCollier39 min
Dec 11, 6:08 PM ESTAreal Flood AdvisoryMFLPalm Beach112 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.