Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Miami, FL

January 7, 2017

NWS Miami, FL issued this special weather statement at Jan 7, 2017, 12:18 PM EST. It was in force for 42 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
Jan 7, 2017, 12:18 PM EST (17:18 UTC)
Expired
Jan 7, 2017, 1:00 PM EST
In force
42 min
Issued by
NWS Miami, FL

The radar

The Miami radar (KAMX), 107 km from the middle of the area, began a volume at 17:18 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, 5.3 hours before the alert went out and 80 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 2017-01-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 997 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 2017-01-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 113 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
997 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
881 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
113 m²/s²
0-3 km storm-relative helicity
138 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.5

Open this sounding in Storm Lab

The text

As transmitted.

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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 Jan 7, 9:59 AM EST, 2 hours 19 minutes earlier.

Area forecast discussion, Jan 7, 9:59 AM EST, 2 hours 19 minutes before
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Hazardous weather outlook, Jan 7, 8:41 AM EST, 3 hours 37 minutes before
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In the hours before

Local storm report, Jan 7, 7:59 AM EST, 4 hours 19 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
759 AM EST SAT JAN 07 2017

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0745 AM     MARINE TSTM WIND 52 E SOUTH BEACH        25.71N  79.30W
01/07/2017  M52 MPH          AMZ671             FL   MESONET

            A MARINE THUNDERSTORM WIND GUST OF 52 MPH...45 KNOTS
            WAS RECORDED BY THE WEATHER BUG MESONET SITE...BSRMA...
            LOCATED AT THE BIMINI SANDS RESORT AND MARINA AT 745 AM
            EST.

&&

EVENT NUMBER MFL1700016

KELLY
Special weather statement, Jan 7, 11:24 AM EST, 54 minutes before
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Special weather statement, Jan 7, 11:51 AM EST, 27 minutes before
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Special weather statement, Jan 7, 12:04 PM EST, 14 minutes before
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Special weather statement, Jan 7, 12:18 PM EST, 0 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jan 7, 5:04 AM ESTSpecial Marine WarningMFL26 min
Jan 7, 5:37 AM ESTSpecial Marine WarningMFL23 min
Jan 7, 5:37 AM ESTRip Current StatementMFLBroward, Collier, Miami-Dade, Palm Beach10 days
Jan 7, 6:02 AM ESTSpecial Marine WarningMFL58 min
Jan 7, 6:45 AM ESTSpecial Marine WarningMFL90 min
Jan 7, 7:09 AM ESTSpecial Marine WarningMFL96 min
Jan 7, 7:10 AM ESTSpecial Marine WarningMFL65 min
Jan 7, 8:15 AM ESTSpecial Marine WarningMFL60 min
Jan 7, 8:33 AM ESTWind Chill AdvisoryMFLCollier, Glades, Hendry25 hr
Jan 7, 11:24 AM ESTSpecial Weather StatementMFLPalm Beach51 min
Jan 7, 11:38 AM ESTSevere Thunderstorm WarningMFLPalm Beach37 min
Jan 7, 11:39 AM ESTSpecial Marine WarningMFL66 min
Jan 7, 11:51 AM ESTSpecial Weather StatementMFLBroward39 min
Jan 7, 12:04 PM ESTSpecial Weather StatementMFLCollier41 min
Jan 7, 12:20 PM ESTSpecial Marine WarningMFL55 min
Jan 7, 12:24 PM ESTSpecial Weather StatementMFLMonroe51 min
Jan 7, 1:01 PM ESTSpecial Marine WarningMFL89 min
Jan 7, 1:33 PM ESTSpecial Weather StatementMFLBroward, Miami-Dade57 min
Jan 7, 1:37 PM ESTSpecial Marine WarningMFL83 min
Jan 7, 2:29 PM ESTSpecial Marine WarningMFL91 min

Nearby

Special Weather Statements in Florida, 2017Every special weather statement in 2017

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.