Alert archive / Florida / Special Weather Statements in 2021

Special Weather Statement, NWS Melbourne, FL

February 13, 20214 counties in Florida

NWS Melbourne, FL issued this special weather statement at Feb 13, 2021, 9:53 AM EST for 4 counties in Florida. It was in force for 52 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: Feb 13, 2021, 9:53 AM EST (14:53 UTC)
Expired: Feb 13, 2021, 10:45 AM EST
In force: 52 min
Issued by: NWS Melbourne, FL

Counties Orange County, FL, Osceola County, FL, Seminole County, FL, Volusia County, FL

The radar

The Melbourne radar (KMLB), 75 km from the middle of the area, began a volume at 14:56 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

Cape Canaveral, FL (KXMR), launched 12:00Z, 2.9 hours before the alert went out and 74 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: 121 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1074 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 139 m²/s²
0-3 km storm-relative helicity: 155 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.3

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 Feb 13, 4:10 AM EST, 5 hours 43 minutes earlier.

Area forecast discussion, Feb 13, 4:10 AM EST, 5 hours 43 minutes before

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Hazardous weather outlook, Feb 13, 6:09 AM EST, 3 hours 44 minutes before

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In the hours before

Special weather statement, Feb 13, 8:58 AM EST, 55 minutes before

Special Weather Statement
National Weather Service Melbourne FL
858 AM EST Sat Feb 13 2021

FLZ044-045-053-144-131500-
Northern Lake County FL-Osceola FL-Orange FL-Southern Lake County FL-
858 AM EST Sat Feb 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR LAKE...WESTERN ORANGE AND
NORTHWESTERN OSCEOLA COUNTIES UNTIL 1000 AM EST...

At 855 AM EST, Doppler radar was tracking a broken line of strong
lightning storms along a line extending from The Villages to near
Lakeland. Movement was east at 40 mph.

Winds in excess of 40 mph and briefly very heavy rain, and
occasional lightning will be possible with some of the stronger
storms.

Locations impacted include...
Leesburg, Kissimmee, Apopka, Ocoee and Winter Garden.

LAT...LON 2896 8195 2896 8166 2927 8164 2920 8161
      2917 8152 2910 8150 2909 8146 2905 8144
      2874 8142 2871 8146 2864 8146 2864 8141
      2809 8138 2809 8145 2814 8146 2814 8152
      2826 8156 2826 8166 2835 8166 2835 8196
TIME...MOT...LOC 1355Z 249DEG 46KT 2882 8195 2807 8201

Pendergrast

Special weather statement, Feb 13, 9:53 AM EST, 0 minutes before

Special Weather Statement
National Weather Service Melbourne FL
953 AM EST Sat Feb 13 2021

FLZ041-044>046-053-141-147-131545-
Northern Lake County FL-Osceola FL-Coastal Volusia FL-
Northern Brevard County FL-Orange FL-Seminole FL-Inland Volusia FL-
953 AM EST Sat Feb 13 2021

...SIGNIFICANT WEATHER ADVISORY FOR SEMINOLE...NORTHEASTERN LAKE...
NORTHWESTERN BREVARD...ORANGE...VOLUSIA AND OSCEOLA COUNTIES UNTIL
1045 AM EST...

At 952 AM EST, Doppler radar was tracking strong lightning storms
along a line extending from Sanford to near Kissimmee. Movement was
east at 40 mph.

Winds in excess of 40 mph and occasional to frequent lightning will
be possible with these storms.

Locations impacted include...
Orlando, Deltona, Daytona Beach, Kissimmee and Port Orange.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Torrential rainfall is also occurring with these storms, and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.

&&

LAT...LON 2872 8070 2834 8078 2834 8086 2797 8087
      2796 8135 2805 8146 2801 8138 2808 8135
      2809 8145 2814 8146 2814 8152 2820 8152
      2826 8156 2826 8166 2926 8162 2928 8142
      2926 8142 2927 8115 2932 8115 2933 8103
TIME...MOT...LOC 1452Z 264DEG 42KT 2878 8135 2784 8128

Pendergrast

The office that day

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

Issued	Product	Office	Counties	Lasted
Feb 13, 8:58 AM EST	Special Weather Statement	MLB	Lake	62 min
Feb 13, 10:56 AM EST	Special Weather Statement	MLB	Brevard	49 min
Feb 13, 10:58 AM EST	Special Marine Warning	MLB		92 min
Feb 13, 2:47 PM EST	Special Marine Warning	MLB		58 min
Feb 13, 2:50 PM EST	Special Weather Statement	MLB	Saint Lucie	25 min
Feb 13, 6:33 PM EST	Special Weather Statement	MLB	Brevard	42 min

Nearby

Special Weather Statements in Florida, 2021 Every special weather statement in 2021

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.