Tropical Storm Cindy developed over the central Gulf of Mexico on June 20th and moved generally northwest for the next few days before making landfall in southwest Louisiana near the Louisiana and Texas state line.
Cindy was an asymmetric system as it moved through the central Gulf toward southwest Louisiana, resulting in minor to moderate impacts across southern Mississippi. The storm resulted in heavy rainfall, minor storm surge flooding, and isolated damage due to strong winds. One tornado was also confirmed on the Mississippi Gulf Coast.
The minimum sea level pressure of 1007.1 mb, along with the highest wind gust and highest sustained wind in southern Mississippi were all measured by the Gulfport Airport ASOS (KGPT). The highest wind gust recorded was 43 knots, or 49 mph, and the the maximum sustained wind in was 33 knots, or 38 mph. Tropical storm force winds were primarily experienced in gusts as squalls moved through the area. The winds did cause isolated minor damage to trees, roofs, and power lines.
A storm tide of generally 2 to 4 feet occurred along the Gulf Coast from Harrison County through Jackson County. The highest measured storm tide was 4.06 ft MHHW at a National Ocean Service gauge at Bay Waveland in Hancock County. The elevated tides resulted in minor to moderate flooding mainly of low lying land, as well as some beach erosion.
One long lived rain band resulted in very heavy rainfall across eastern Harrison County and western Jackson County. In these areas, many places reported 13 to 17 inches of rain, with a maximum of 18.74 inches reported by a CoCoRaHS observer in Ocean Springs. Elsewhere across the Mississippi coast, widespread rainfall totals of 7 to 10 inches were common. The heavy rainfall led to minor to moderate river flooding as well as flash flooding.
One tornado was confirmed in Harrison County when a waterspout came ashore from the Mississippi Sound near Biloxi.

Flood in HARRISON, MISSISSIPPI
From 21-JUN-17 08:00:00 to 23-JUN-17 05:00:00 (CST-6)
Location: LORRAINE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Heavy rain across Harrison County and just north in Stone County caused the Biloxi River caused moderate flooding of the Biloxi River from Wortham to Lyman. Near Wortham, a few roads were impassible due to the flooding. Near Lyman, a few roads in the Retreat and Riverland Village subdivisions were impassible.

Tropical Storm in JACKSON, MISSISSIPPI
From 21-JUN-17 15:00:00 to 21-JUN-17 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: WLON

A few tropical storm force gusts were recorded in squalls during the afternoon of the 21st. The No damage was reported in the county from these tropical storm winds. The WLON station at the Port of Pascagoula Dock C (DKCM6) recorded a maximum gust of 37 kts, or 42 mph, at 5:00 pm CST on the 21st. No damage was reported as a result of the tropical storm winds.

Flood in HARRISON, MISSISSIPPI
From 22-JUN-17 04:30:00 to 23-JUN-17 08:00:00 (CST-6)
Location: D IBERVILLE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

Seven to 10 inches of rain across Harrison County caused minor flooding along the Tchoutacabouffa River. Two people were rescued after driving their vehicle through the flooding along Bluff Rd despite the road being closed.

Tropical Storm in HARRISON, MISSISSIPPI
From 21-JUN-17 14:00:00 to 21-JUN-17 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

A few tropical storm force gusts were recorded in squalls during the afternoon of the 21st. The Gulfport/Biloxi Airport ASOS (KGPT) reported a maximum wind gust of 43 kts, or 49 mph, at 2:25 pm CST on the 21st. A few tropical storm force gusts were also reported at by the Keesler Air Force Base ASOS (KBIX) and a Weatherflow site in Gulfport (XGPT). No damage was reported in the county from these tropical storm winds.

Tropical Storm in HANCOCK, MISSISSIPPI
From 21-JUN-17 14:00:00 to 21-JUN-17 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: C-MAN Station

A few tropical storm force gusts were recorded in squalls during the afternoon of the 21st. The Bay Waveland C-Man station reported a maximum wind gust of 46 kts, or 53 mph, at 2:18pm on the 21st. Sustained winds at the same time were 36 kts, or 41 mph. No damage was reported in the county.

Heavy Rain in HANCOCK, MISSISSIPPI
From 20-JUN-17 06:00:00 to 22-JUN-17 06:00:00 (CST-6)
Location: KILN
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Storm total rainfall across the county generally ranged from 7 to 9 inches between the 19th and the 23rd. The maximum measured storm total rainfall in the county was from a CoCoRaHS observer 3.3 miles north of Kiln. That observer recorded 8.70 inches of rain, most of which fell between 6am CST on the 27th and 6am CST on the 28th. Additional CoCoRaHS storm total rainfall observations include: 8.08 inches in Diamondhead and 7.15 inches in Waveland.

Flash Flood in JACKSON, MISSISSIPPI
From 22-JUN-17 06:30:00 to 22-JUN-17 08:00:00 (CST-6)
Location: OCEAN SPGS ARPT
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A persistent  band of heavy rainfall set up just east of the Jackson and Harrison County line overnight from the 21st into the 22nd. Several observers in the Ocean Springs area recorded 6 to 10 inches of rain from the single band with storm totals of 15 to 18 inches. Numerous streets became impassible due to flash flooding. One street in the Gulf Park Estates subdivision was washed out.

Storm Surge/Tide in HANCOCK, MISSISSIPPI
From 20-JUN-17 00:00:00 to 23-JUN-17 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: River/Stream Gage

The National Ocean Service gauge at Bay Waveland Yacht Club recorded a maximum water level of 4.31 ft NAVD88, which was 4.04 ft above the predicted tide level at 12:48am on the 21st. The elevated water levels resulted in moderate impacts around Bay St. Louis - especially in the Shoreline Park area. Hundreds of streets near the coast were inundated with 1 to 2 feet of water. A few of the lowest lying streets saw up to 3 feet of inundation. No homes or businesses were reported damaged.

Storm Surge/Tide in HARRISON, MISSISSIPPI
From 20-JUN-17 00:00:00 to 23-JUN-17 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Storm surge of approximately 3 feet resulted in moderate impacts along the barrier islands and actual coastline. Near Gulfport, the beach was eroded all the way to the sea wall in some places.

Storm Surge/Tide in JACKSON, MISSISSIPPI
From 20-JUN-17 18:00:00 to 23-JUN-17 06:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

The USGS gauge near Ocean Springs recorded a maximum water level of 3.92 ft NAVD88 at 7:45am CST on the 22nd. Farther east, the National Ocean Service gauge at the Port of Pascagoula Dock E recorded a maximum water level of 2.50 ft MHHW, which was 2.21 ft above the predicted level at 6:30am CST on the 22nd.

Tornado in HARRISON, MISSISSIPPI
From 21-JUN-17 07:25:00 to 21-JUN-17 07:31:00 (CST-6)
Location: BEAUVOIR
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

A tornadic waterspout came onshore near Beauvoir Rd and Beach Blvd in Biloxi, MS causing damage to tree limbs and fencing and breaking a single window. It moved almost due north-northwest and continued to cause damage mainly to trees. It downed a few trees and a power line between Rich Ave and Popps Ferry Rd. The tornado continued northward causing sporadic minor damage and lifted south of Woolmarket Rd. Peak damage occurred near Beauvoir Rd and was estimated to be caused by around 85 mph (EF-0) winds. Based on KLIX radar analysis, it's possible the initial tornado occluded northwest over Big Lake and a brief, second EF-0 touched down and caused tree damage in Sunkist Country Club and near Oaklawn Rd. This would corroborate reports of two tornadoes being observed per public reports.