Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Melbourne, FL

January 23, 2017Martin County, Florida

NWS Melbourne, FL issued this special weather statement at Jan 23, 2017, 12:40 AM EST for Martin County, Florida. It was in force for 35 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 23, 2017, 12:40 AM EST (05:40 UTC)
Expired: Jan 23, 2017, 1:15 AM EST
In force: 35 min
Issued by: NWS Melbourne, FL

County Martin County, FL

The radar

The Melbourne radar (KMLB), 115 km from the middle of the area, began a volume at 05:41 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, 5.7 hours before the alert went out and 144 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: 635 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1027 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 204 m²/s²
0-3 km storm-relative helicity: 203 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.7

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 Melbourne, FL wrote its last area forecast discussion before this special weather statement went out at Jan 22, 9:58 PM EST, 2 hours 42 minutes earlier.

Area forecast discussion, Jan 22, 9:58 PM EST, 2 hours 42 minutes before

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Hazardous weather outlook, Jan 23, 12:17 AM EST, 23 minutes before

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In the hours before

Special weather statement, Jan 22, 9:59 PM EST, 2 hours 41 minutes before

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Local storm report, Jan 22, 10:23 PM EST, 2 hours 17 minutes before

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Local storm report, Jan 22, 10:25 PM EST, 2 hours 15 minutes before

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Local storm report, Jan 22, 11:13 PM EST, 1 hour 27 minutes before

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Special weather statement, Jan 23, 12:21 AM EST, 19 minutes before

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Special weather statement, Jan 23, 12:40 AM EST, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 22, 7:00 PM EST	Severe Thunderstorm Warning	MLB	Lake, Orange, Osceola, Seminole	60 min
Jan 22, 7:12 PM EST	Special Marine Warning	MLB		63 min
Jan 22, 7:19 PM EST	Tornado Warning	MLB	Orange, Seminole, Volusia	41 min
Jan 22, 7:26 PM EST	Severe Thunderstorm Warning	MLB	Lake, Orange, Volusia	64 min
Jan 22, 7:29 PM EST	Tornado Warning	MLB	Volusia	31 min
Jan 22, 7:51 PM EST	Tornado Warning	MLB	Brevard, Orange, Seminole, Volusia	39 min
Jan 22, 7:53 PM EST	Severe Thunderstorm Warning	MLB	Lake, Orange, Seminole, Volusia	37 min
Jan 22, 8:15 PM EST	Special Marine Warning	MLB		2 hr
Jan 22, 8:29 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Orange, Seminole, Volusia	61 min
Jan 22, 8:36 PM EST	Special Weather Statement	MLB	Orange	54 min
Jan 22, 8:59 PM EST	Special Weather Statement	MLB	Brevard, Osceola	46 min
Jan 22, 9:10 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Osceola	50 min
Jan 22, 9:28 PM EST	Tornado Warning	MLB	Brevard	32 min
Jan 22, 9:58 PM EST	Severe Thunderstorm Warning	MLB	Brevard, Osceola	47 min
Jan 22, 9:59 PM EST	Special Weather Statement	MLB	Brevard, Indian River, Osceola	91 min
Jan 22, 10:07 PM EST	Tornado Warning	MLB	Brevard	23 min
Jan 22, 10:14 PM EST	Special Marine Warning	MLB		3 hr
Jan 23, 12:21 AM EST	Special Weather Statement	MLB	Indian River, Saint Lucie	24 min
Jan 23, 1:14 AM EST	Special Marine Warning	MLB		2 hr
Jan 23, 3:15 AM EST	Wind Advisory	MLB	Lake, Okeechobee, Orange, Osceola, Seminole, Volusia	15 hr

Nearby

Special Weather Statements in Florida, 2017 Every 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.