Alert archive / Florida / Special Weather Statements in 2017

Special Weather Statement, NWS Melbourne, FL

June 26, 2017Orange County, Florida

NWS Melbourne, FL issued this special weather statement at Jun 26, 2017, 3:39 PM EDT for Orange County, Florida. It was in force for 66 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: Jun 26, 2017, 3:39 PM EDT (19:39 UTC)
Expired: Jun 26, 2017, 4:45 PM EDT
In force: 66 min
Issued by: NWS Melbourne, FL

County Orange County, FL

The radar

The Melbourne radar (KMLB), 72 km from the middle of the area, began a volume at 19:40 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, 7.7 hours before the alert went out and 90 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: 244 J/kg
Mixed-layer CIN: -80 J/kg
Mixed-layer LCL: 1102 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 15 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Jun 26, 3:09 PM EDT, 30 minutes earlier.

Area forecast discussion, Jun 26, 3:09 PM EDT, 30 minutes before

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Hazardous weather outlook, Jun 26, 10:32 AM EDT, 5 hours 7 minutes before

Hazardous Weather Outlook...UPDATED
National Weather Service Melbourne FL
1032 AM EDT Mon Jun 26 2017

AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141-
144-147-270245-
Flagler Beach to Volusia-Brevard County Line 0-20 nm-Volusia-
Brevard County Line to Sebastian Inlet 0-20 nm-
Sebastian Inlet to Jupiter Inlet 0-20 nm-Flagler Beach to Volusia-
Brevard County Line 20-60 nm-Volusia-
Brevard County Line to Sebastian Inlet 20-60 nm-
Sebastian Inlet to Jupiter Inlet 20-60 nm-Inland Volusia County-
Northern Lake County-Orange-Seminole-Southern Brevard County-
Osceola-Indian River-Okeechobee-St. Lucie-Martin-
Coastal Volusia County-Southern Lake County-
Northern Brevard County-
1032 AM EDT Mon Jun 26 2017

THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA.

.DAY ONE...TODAY AND TONIGHT.

.THUNDERSTORM IMPACT...
An approaching frontal boundary and increased moisture in the
atmosphere will produce a higher coverage of afternoon showers
and thunderstorms. Initial development of isolated lightning
storms is expected along the east coast sea breeze as it pushes
inland from the coast early this afternoon. Coverage and intensity
of thunderstorms will increase late this afternoon and early
evening over the interior, especially along the Interstate 4
corridor and Osceola county. Some of the storms will push back
toward the Volusia and Brevard County coasts. The primary hazards
will be cloud to ground lightning, gusty downburst winds, and
heavy rainfall. Storm motion will be generally toward the
northeast around 10 mph but thunderstorms that form as a result
of boundary collisions will exhibit slow and erratic movement.

.FLOOD IMPACT...
Slow moving lightning storms will be capable of producing locally
heavy rainfall late this afternoon and this evening across parts
of Lake, Volusia, Seminole, Orange, Osceola, and Brevard
counties. Rainfall amounts of 2 to 4 inches will be possible in a
few spots which will cause temporary flooding of roadways and low
lying areas.

.RIP CURRENT IMPACT...
An east swell will produce a moderate risk of rip currents at the
beaches of east central Florida. Always swim within sight of a
lifeguard.

.MARINE THUNDERSTORM GUST IMPACT...
Scattered lightning storms will be capable of producing dangerous
lightning strikes and gusty downburst winds late this afternoon
and this evening. Most of the storms will stay over land and
affect inland lakes but there is chance for a few storms or their
outflows to push back to the Volusia and Brevard coasts.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY.
Scattered lightning storms are expected each afternoon this week,
with the highest storm coverage forecast through Tuesday as a
weak frontal boundary pushes into the area and stalls. The primary
threats will be dangerous lightning strikes, gusty winds and
locally heavy rain.

.SPOTTER INFORMATION STATEMENT...
Spotter activation will not be needed today, however spotters are
asked to report rainfall amounts of greater than 3 inches or
observed flooding.

15

In the hours before

Special weather statement, Jun 26, 1:37 PM EDT, 2 hours 2 minutes before

Special Weather Statement
National Weather Service Melbourne FL
137 PM EDT MON JUN 26 2017

FLZ041-141-261830-
Inland Volusia County FL-Coastal Volusia County FL-
137 PM EDT MON JUN 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL VOLUSIA COUNTY UNTIL 230
PM EDT...

At 134 PM EDT, Doppler radar was tracking a strong thunderstorm NEAR
Daytona Beach Airport, moving northeast at 10 TO 15 mph. Additional
developing strong storms will affect areas near Deland and New
Smyrna Beach. Locally heavy rain and cloud to ground lightning will
accompany these storms.

Winds GUSTS UP TO 40 mph will be possible with this storm.

Locations impacted include...
Deltona, Daytona Beach, Port Orange, Ormond Beach and DeLand.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

LAT...LON 2910 8090 2902 8085 2894 8099 2893 8124
      2897 8137 2899 8136 2899 8137 2903 8141
      2918 8138 2927 8121 2927 8115 2930 8115
      2935 8103
TIME...MOT...LOC 1734Z 237DEG 16KT 2917 8106

15

Special weather statement, Jun 26, 2:21 PM EDT, 1 hour 18 minutes before

Special Weather Statement
National Weather Service Melbourne FL
221 PM EDT MON JUN 26 2017

FLZ045-144-261915-
Orange FL-Southern Lake County FL-
221 PM EDT MON JUN 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN LAKE AND WESTERN
ORANGE COUNTIES UNTIL 315 PM EDT...

At 220 PM EDT, Doppler radar was tracking a strong thunderstorm over
Clermont, or near Groveland, moving east at 15 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Orlando, Apopka, Ocoee, Winter Garden and Maitland.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2879 8152 2878 8144 2873 8143 2871 8144
      2871 8146 2864 8146 2864 8140 2846 8134
      2840 8171 2868 8183
TIME...MOT...LOC 1820Z 252DEG 6KT 2854 8177

Johnson

Special weather statement, Jun 26, 2:53 PM EDT, 46 minutes before

Special Weather Statement
National Weather Service Melbourne FL
253 PM EDT MON JUN 26 2017

FLZ047-053-261945-
Southern Brevard County FL-Osceola FL-
253 PM EDT MON JUN 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR WEST CENTRAL BREVARD AND
NORTHEASTERN OSCEOLA COUNTIES UNTIL 345 PM EDT...

At 253 PM EDT, Doppler radar was tracking a strong thunderstorm over
Holopaw, moving northeast at 15 mph.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Holopaw, Harmony, Forever Florida and Alligator Lake.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2820 8071 2799 8111 2822 8128 2835 8089
      2835 8086 2834 8086 2834 8084
TIME...MOT...LOC 1853Z 237DEG 19KT 2814 8111

Johnson

Special weather statement, Jun 26, 3:26 PM EDT, 13 minutes before

Special Weather Statement
National Weather Service Melbourne FL
326 PM EDT MON JUN 26 2017

FLZ045-046-147-262030-
Northern Brevard County FL-Orange FL-Seminole FL-
326 PM EDT MON JUN 26 2017

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN SEMINOLE...
NORTHWESTERN BREVARD AND SOUTHEASTERN ORANGE COUNTIES UNTIL 430 PM
EDT...

At 324 PM EDT, Doppler radar was tracking a strong thunderstorm over
Winter Park. Clusters of storms are nearly stationary.

Winds in excess of 40 mph will be possible with this storm.

Locations impacted include...
Orlando, Titusville, Oviedo, Winter Springs and Winter Park.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

&&

LAT...LON 2875 8129 2872 8103 2861 8099 2862 8097
      2871 8097 2870 8084 2836 8080 2847 8132
      2856 8141
TIME...MOT...LOC 1924Z 217DEG 3KT 2858 8132

Johnson

Local storm report, Jun 26, 3:34 PM EDT, 5 minutes before

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Special weather statement, Jun 26, 3:39 PM EDT, 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
Jun 25, 8:09 PM EDT	Areal Flood Advisory	MLB	Volusia	81 min
Jun 25, 10:14 PM EDT	Areal Flood Advisory	MLB	Orange, Osceola	91 min
Jun 26, 1:37 PM EDT	Special Weather Statement	MLB	Volusia	53 min
Jun 26, 2:21 PM EDT	Special Weather Statement	MLB	Lake	54 min
Jun 26, 2:53 PM EDT	Special Weather Statement	MLB	Osceola	52 min
Jun 26, 3:26 PM EDT	Special Weather Statement	MLB	Orange, Seminole	64 min
Jun 26, 5:28 PM EDT	Special Weather Statement	MLB	Lake	62 min

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.