A funnel cloud was observed in association with an isolated thunderstorm which quickly formed just north of Indiantown.
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The episode as NWS MLB wrote it up.
A funnel cloud was observed in association with an isolated thunderstorm which quickly formed just north of Indiantown.
The local office's own words before the first event, 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 the first event at Aug 22, 2:33 PM EST, 52 minutes earlier.
Area Forecast Discussion National Weather Service Melbourne FL 333 PM EDT Wed Aug 22 2018 .DISCUSSION... Current-Tonight...Low level southwest flow, deep moisture and continued sea breeze and outflow boundary interactions will continue scattered to numerous shower and storms across east central FL into late afternoon with movement toward the east coast. Short range guidance indicates scattered storms should linger into this evening across the eastern portions of the forecast area before diminishing into late evening. Considerable evening convective cloudiness should then decrease after midnight. Lows will be in the lower to mid 70s with warmer readings along the Atlantic beaches. Thu-Fri...Troughing aloft over the Eastern Seaboard will give way to shortwave ridging during the day on Fri as the weakening trough pushes off of the coast. Winds at 500 mb will remain relatively light and variable during this time across Florida. At the surface, the high pressure ridge axis over the south-central peninsula will weaken with reinforcing high pressure to the north moving out of the Ohio and Tennessee Valleys and across the eastern CONUS emerging into the western Atlc Fri overnight. Surface winds will remain light over the entire period with biggest influence surrounding the daily ECSB developing and moving inland allowing winds to become onshore. Some drying is forecast north of I-4 on Thu with PWAT values approaching 2 inches nearly areawide on Fri. Will carry PoPs each day from 40-60pct with hours of highest precip potential realized late afternoon/early evening as boundary interactions will be plentiful. Sat-Tue...A deep, but light onshore wind component will exist across the region during this time. As such, this generally favors overnight/morning precip over the coastal waters and across coastal counties and interior sections during the afternoon and early evening. The surface high pressure ridge axis will re-establish itself well north of ECFL during this time. The surface pressure gradient will remain rather weak with light winds continuing. The ECSB will develop each afternoon and venture well inland. && .AVIATION... Scattered to numerous SHRA/TSRA expected across east central Florida through this evening, especially north of a line from ISM-VRB. East coast sea breeze already west of FPR-SUA should keep convection west of these terminals and will only carry VCTS for the time being to account for this. Will monitor for TEMPO groups due to some storms possibly being pushed back toward the coast. TSRA activity should diminish around sunset with some SHRA lingering a couple hours past. VFR for overnight through the remainder of the TAF period. && .MARINE... Tonight...Southerly winds to 10-13 knots offshore will become southwest and decrease to 5-10 knots later tonight. Seas generally 1- 2 ft near shore and up to 2-3 ft well offshore. Late afternoon/early evening storms expected near the east coast then scattered storms should develop over the gulf stream waters overnight. Thu-Sun...A very weak pressure gradient will be in place through the weekend. The ridge axis will be over the south-central peninsula early in the period, then will be reinforced well north over the weekend. A deepening, but light onshore component will begin Fri night into Sun. Wind speeds will remain AOB 12 kts, though may be locally higher near storms. Scattered shower and isolated storm activity will be most prevalent at night and during the morning Fri night onward. Seas 2 ft near shore and 2-3 ft offshore. && .PRELIMINARY POINT TEMPS/POPS... DAB 73 91 75 89 / 30 40 40 50 MCO 74 93 75 91 / 30 60 40 60 MLB 74 91 74 89 / 40 50 50 50 VRB 73 90 73 90 / 40 40 50 50 LEE 75 93 75 92 / 30 40 30 60 SFB 75 93 75 91 / 30 60 40 60 ORL 76 93 76 91 / 30 60 40 60 FPR 73 90 74 90 / 30 40 50 50 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...None. AM...None. && Volkmer/Combs/Smith
Hazardous Weather Outlook National Weather Service Melbourne FL 342 PM EDT Wed Aug 22 2018 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-230100- 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- 342 PM EDT Wed Aug 22 2018 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...THIS AFTERNOON AND TONIGHT. .THUNDERSTORM IMPACT... Favorable atmospheric winds and deep moisture will support scattered to numerous afternoon lightning storms across east central Florida through this evening. A few storms could be strong with the greatest chance of strong storms being across Brevard, Indian River, and eastern Osceola counties. Lightning strikes, torrential downpours, and wind gusts of up to 50 mph will be the primary storm hazards in the strongest storms. Seek shelter in an enclosed building or automobile if thunder is heard. Open shelters, tents, and golf carts offer no protection from deadly lightning. .FLOOD IMPACT... Slow moving storms will produce very heavy rainfall, capable of accumulating up to 2 to 3 inches in a 60 to 90 minute period. Temporary flooding of some roads as well as low lying and poor drainage areas will occur. Do not drive a vehicle into water of unknown depth. .MARINE THUNDERSTORM GUST IMPACT... Showers and storms are expected to develop this afternoon over the mainland and lead to frequent lightning strikes and gusty winds in excess of 35 knots over inland lakes. Some of these storms could push back toward the coast later this afternoon into this evening, mainly north of Fort Pierce Inlet. .RIVER FLOOD IMPACT... The Saint Johns River at Sanford and above Lake Harney near Geneva remain above Action Stage. River levels are forecast to remain steady or slowly fall into late week. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY. Scattered afternoon lightning storms will produce a threat for frequent lightning strikes, gusty winds, and heavy downpours each day. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. Combs
Special Weather Statement National Weather Service Melbourne FL 142 PM EDT WED AUG 22 2018 FLZ045-221845- Orange FL- 142 PM EDT WED AUG 22 2018 ...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL ORANGE COUNTY UNTIL 245 PM EDT... At 141 PM EDT, Doppler radar was tracking a strong thunderstorm near Avalon Park, moving east at 10 mph. Wind gusts up to 50 mph will be possible with this storm. Locations impacted include... Orlando, Wedgefield, Avalon Park, Orlando International Airport and Bithlo. 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 2835 8142 2861 8127 2861 8098 2835 8108 TIME...MOT...LOC 1741Z 252DEG 8KT 2847 8122 Smith
Special Weather Statement
National Weather Service Melbourne FL
328 PM EDT WED AUG 22 2018
FLZ054-059-222030-
St. Lucie FL-Indian River FL-
328 PM EDT WED AUG 22 2018
...SIGNIFICANT WEATHER ADVISORY FOR ST. LUCIE AND INDIAN RIVER
COUNTIES UNTIL 430 PM EDT...
At 327 PM EDT, Doppler radar was tracking a strong thunderstorm over
Vero Beach South, moving east at 5 mph. Additional strong
thunderstorms are expected to propagate southward along a boundary
collision with the east coast sea breeze.
Winds in excess of 40 mph will be possible with this storm.
Locations impacted include...
Port Saint Lucie, Walton, Fort Pierce, Sebastian and Vero Beach.
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 2726 8019 2725 8067 2782 8069 2782 8051
2783 8050 2784 8042
TIME...MOT...LOC 1927Z 251DEG 6KT 2763 8044
SmithPRELIMINARY LOCAL STORM REPORT
National Weather Service Melbourne FL
334 PM EDT WED AUG 22 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0325 PM TSTM WND GST 3 E HAULOVER CANAL 28.74N 80.70W
08/22/2018 M55.00 MPH Brevard FL OTHER FEDERAL
USAF WIND TOWER 19 MEASURED PEAK WIND GUST OF 48KT OR
55MPH FROM THE WEST-SOUTHWEST
0325 PM TSTM WND GST 3 SE HAULOVER CANAL 28.71N 80.73W
08/22/2018 M44.00 MPH Brevard FL OTHER FEDERAL
USAF WIND TOWER 418 MEASURED A PEAK WIND GUST OF 38KT OR
44MPH FROM THE SOUTH-SOUTHEAST.
0332 PM TSTM WND GST VERO BEACH AIRPORT 27.65N 80.42W
08/22/2018 M39.00 MPH INDIAN RIVER FL ASOS
ASOS AT VERO BEACH AIRPORT MEASURED PEAK WIND GUST OF
34KT OR 39MPH FROM THE WEST-SOUTHWEST.
&&
KRSpecial Weather Statement
National Weather Service Melbourne FL
339 PM EDT WED AUG 22 2018
FLZ047-053-147-222115-
Southern Brevard County FL-Osceola FL-Northern Brevard County FL-
339 PM EDT WED AUG 22 2018
...SIGNIFICANT WEATHER ADVISORY FOR BREVARD AND EAST CENTRAL OSCEOLA
COUNTIES UNTIL 515 PM EDT...
At 338 PM EDT, Doppler radar was tracking a strong thunderstorm over
Merritt Island, moving east at 5 mph. Additional strong
thunderstorms are expected to develop along a sea breeze boundary
collision from Cocoa Beach to Deer Park.
Wind gusts up to 50 mph will be possible with this storm.
Locations impacted include...
Palm Bay, Melbourne, Titusville, Rockledge and Cocoa.
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 2783 8048 2785 8049 2783 8051 2782 8089
2806 8105 2835 8086 2864 8085 2868 8060
2862 8056 2844 8051 2839 8056 2834 8057
2813 8054 2790 8043 2783 8042
TIME...MOT...LOC 1938Z 256DEG 6KT 2835 8069
SmithPRELIMINARY LOCAL STORM REPORT
National Weather Service Melbourne FL
342 PM EDT WED AUG 22 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0335 PM TSTM WND GST 4 S PLAYALINDA BEACH 28.60N 80.64W
08/22/2018 M44 MPH Brevard FL OTHER FEDERAL
USAF WIND TOWER 311 MEASURED PEAK WIND GUST OF 38KT OR
44MPH FROM THE NORTH-NORTHWEST.
&&
KRPRELIMINARY LOCAL STORM REPORT
National Weather Service Melbourne FL
350 PM EDT WED AUG 22 2018
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0345 PM TSTM WND GST 7 SSE PLAYALINDA BEACH 28.57N 80.59W
08/22/2018 M39 MPH Brevard FL OTHER FEDERAL
USAF WIND TOWER 1102 MEASURED PEAK WIND GUST OF 34KT OR
39MPH FROM THE WEST.
&&
KRThe Melbourne radar (KMLB), 118 km away, was scanning. The volume nearest the first event began at 20:25 UTC.
1 funnel cloud. Local standard time, as filed.
A public report was received of a funnel cloud to the north of Indiantown, in association with an isolated thunderstorm.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2018Every state in 2018This day in weather historyWarnings in Florida, August 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 769249.