A low pressure system, turned tropical disturbance, moving across the western Atlantic and over the Bahamas abruptly formed into Tropical Depression Nineteen on September 11th. Tropical Depression Nineteen gradually continued westward and the center passed about 10 to 20 miles SSE of Miami, Florida during the morning of September 12th with a minimum central pressure of 1007 mb and maximum sustained winds of 35 mph. As Tropical Depression Nineteen moved westward over the South Florida peninsula, it continued to strengthen into a Tropical Storm known as Tropical Storm Sally. Lowest surface pressure recorded over South Florida was 1002.9 mb at Naples Municipal Airport and Marco Island Airport and maximum sustained winds of 35 mph over land at FAU Boca Raton Campus on September 12. Recorded Tropical Storm force wind gusts were measured across South Florida ranging from 40 to 55 mph.
Although the effects from Tropical Depression Nineteen were generally minor for wind and more moderate to significant for rainfall/flooding for South Florida, wind gusts of tropical storm force were measured across much of Palm Beach, Broward, Miami-Dade, and Collier counties. Rainfall flooding impacts were moderate to significant across South Florida with around 3.5 to almost 10 inches across portions of Collier County, around 3 to almost 8 inches across portions of Miami-Dade County, and around 3 to almost 6 inches across portions of Broward County. Almost 4,000 customers lost power during the event, almost all of them split between Collier and Miami-Dade Counties. A peak storm surge of 1.43 feet was observed at Naples Pier and 1.16 at Virginia Key.

Flash Flood in COLLIER, FLORIDA
From 13-SEP-20 13:00:00 to 13-SEP-20 19:00:00 (EST-5)
Location: EAST NAPLES
Flood cause: Heavy Rain / Tropical System
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A Collier County Emergency Manager relayed pictures of significant flooding at the Marco/Naples RV Park in East Naples of water encroaching on homes. Rainfall totals from September 12th through the 14th ranged from 6 inches to almost 8.7 inches across portions of western Collier County.

Tropical Depression in METROPOLITAN MIAMI-DADE, FLORIDA
From 12-SEP-20 00:00:00 to 13-SEP-20 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

As TD Nineteen moved westward across South Florida, rain bands produced maximum sustained winds generally between 25-32 mph. An earlier rain band moved across metro Miami-Dade County during the morning of September 12th, with peak wind gusts of 44 mph/38 knots measured by the ASOS at Homestead Air Reserve at 1:56 AM EDT, 41 mph/36 knots at the ASOS at Miami International Airport at 12:43 PM EDT, and 40 mph/35 knots at at the ASOS at Opa Locka Airport at 10:58 AM EDT. A total of around 1,500 customers lost power in Miami-Dade County. Overall wind impacts were minor and confined to trees and power lines.

Tropical Depression in COASTAL MIAMI-DADE COUNTY, FLORIDA
From 12-SEP-20 00:00:00 to 13-SEP-20 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

As TD Nineteen moved westward across South Florida, rain bands produced maximum sustained winds generally between 25-35 mph. An earlier rain band moved across coastal Miami-Dade County during the morning of September 12th, with peak wind gusts of 54 mph/47 knots at the WeatherStem mesonet site at UM Health Systems at 10:40 AM EDT on September 12th. Additional wind gusts recorded of 49 mph/43 knots at the WeatherFlow site at Morningside Park (XMSP) at 11:35 AM EDT, and 48 mph/42 knots at the WeatherFlow site at Biscayne Bay Light 20 off Key Biscayne (XKBS) at 11:20 AM EDT.  A total of around 1,500 customers lost power in Miami-Dade County. Overall wind impacts were minor and confined to trees and power lines.

Tropical Depression in COASTAL BROWARD COUNTY, FLORIDA
From 12-SEP-20 06:00:00 to 12-SEP-20 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

As TD Nineteen moved westward across South Florida, rain bands produced maximum sustained winds generally between 25-35 mph. An earlier rain band moved across coastal Broward County during the morning of September 12th, with peak wind gusts of 49 mph/43 knots recorded at WxFlow mesonet site at Port Everglades (XPEG) at 11:34 AM EDT as well as at the WxFlow mesonet site at Dania Pier (XDAN) at 11:22 AM EDT, 47 mph/41 knots at the ASOS station at Fort Lauderdale/Hollywood International Airport at 11:18 AM EDT, and 41 mph/36 knots at the WxFlow mesonet site at Hillsboro Inlet at 8:00 PM EDT. A total of around 560 customers lost power in Broward County. Overall wind impacts were minor and confined to trees and power lines.

Tropical Depression in METRO BROWARD COUNTY, FLORIDA
From 12-SEP-20 06:00:00 to 12-SEP-20 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

As TD Nineteen moved westward across South Florida, rain bands produced maximum sustained winds generally between 25-30 mph. Peak wind gusts of 48 mph/42 knots were recorded at the Earth Networks site FRBCS located in Lauderhill, FL at 11:29 AM EDT on September 12th and 43 mph/37 knots was recorded by the ASOS station at Fort Lauderdale Executive Airport at 11:37 AM EDT. A total of around 560 customers lost power in Broward County. Overall wind impacts were minor and confined to trees and power lines.

Tropical Depression in INLAND BROWARD COUNTY, FLORIDA
From 12-SEP-20 06:00:00 to 12-SEP-20 16:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

As TD Nineteen moved westward across South Florida, rain bands produced maximum sustained winds generally between 25-30 mph. Peak wind gust of 40 mph/35 knots was recorded at the Earth Networks site HILLBS along Alligator Alley in far western Broward County at 1:26 PM EDT on September 12th. Overall wind impacts were minor.

Tropical Depression in COASTAL PALM BEACH COUNTY, FLORIDA
From 12-SEP-20 06:00:00 to 13-SEP-20 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

As TD Nineteen moved westward across South Florida, rain bands produced maximum sustained winds generally between 25-35 mph. An earlier rain band moved across coastal Palm Beach County during the morning of September 12th, with peak wind gusts of 45 mph/39 knots at the WxFlow mesonet site (XJUP) at Juno Beach Pier at 12:48 PM EDT and the NOAA C-MAN site (LKWF1) at Lake Worth at 9:42 PM EDT, and 41 mph/36 knots at the WxFlow mesonet site (XBOY) at Boynton Beach at 4:42 AM EDT. Overall wind impacts were minor and confined to trees and power lines.

Tropical Depression in METRO PALM BEACH COUNTY, FLORIDA
From 12-SEP-20 06:00:00 to 13-SEP-20 01:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

As TD Nineteen moved westward across South Florida, rain bands produced maximum sustained winds generally between 25-30 mph. An earlier rain band moved across coastal Palm Beach County during the morning of September 12th, with peak wind gusts of 53 mph/46 knots at the WeatherStem site (0430W) at FAU Boca Raton and 43 mph/37 knots at the ASOS at West Palm Beach International Airport at 11:18 AM EDT. Overall wind impacts were minor and confined to trees and power lines.

Tropical Depression in COASTAL COLLIER COUNTY, FLORIDA
From 12-SEP-20 12:00:00 to 13-SEP-20 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

As TD Nineteen moved westward across South Florida and into the Gulf waters, rain bands produced maximum sustained winds generally between 25-35 mph. A rain band moved across coastal Collier County during the early afternoon of September 12th into the early morning hours of September 13th, with peak wind gusts of 41 mph/36 knots at the ASOS at Naples Municipal Airport at 11:18 AM EDT and 40 mph/35 knots at the AWOS at Marco Island Airport at 9:15 AM EDT. A total of around 2,000 customers lost power in Collier County. Overall wind impacts were minor and confined to trees and power lines.

Tropical Depression in INLAND COLLIER COUNTY, FLORIDA
From 12-SEP-20 12:00:00 to 13-SEP-20 03:00:00 (EST-5)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

As TD Nineteen moved westward across South Florida and into the Gulf waters, rain bands produced maximum sustained winds generally between 25-32 mph. A rain band moved across inland Collier County during the early afternoon of September 12th into the early morning hours of September 13th, with a peak wind gust of 44 mph/38 knots measured by the RAWS mesonet OCOF1 at Ochopee at 4:03 PM EDT. A total of around 2,000 customers lost power in Collier County. Overall wind impacts were minor and confined to trees and power lines.

Flash Flood in MIAMI-DADE, FLORIDA
From 13-SEP-20 01:00:00 to 13-SEP-20 06:00:00 (EST-5)
Location: COCONUT GROVE
Flood cause: Heavy Rain / Tropical System
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Several broadcast media reports of significant street flooding from Coconut Grove to Brickell and Downtown Miami, and possibly extending into Little Havana. U.S. Highway 1 in Coconut Grove and Brickell was covered in water up to knee-high in places, leading to a number of stalled vehicles.
Rainfall amounts of 5 to 7 inches in about 6 hours were measured in the Coconut Grove and Little Havana areas, with 3 to 4 inches measured during a similar time frame in Downtown Miami and Brickell.