Shortwave disturbances traveling across a slow-moving frontal boundary within a moist air mass allowed for the development of high rainfall producing storms.

Hail in AUSTIN, TEXAS
From 09-MAY-19 18:26:00 to 09-MAY-19 18:26:00 (CST-6)
Location: KENNEY
Magnitude: 1.25 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Half dollar sized hail was reported from MPING.

Hail in WALLER, TEXAS
From 09-MAY-19 18:45:00 to 09-MAY-19 18:45:00 (CST-6)
Location: PRAIRIE VIEW
Magnitude: 1.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Quarter sized hail was reported.

Hail in HARRIS, TEXAS
From 09-MAY-19 19:00:00 to 09-MAY-19 19:00:00 (CST-6)
Location: JERSEY VILLAGE
Magnitude: 2.00 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Hen egg sized hail was reported in the Twin Lakes and Concord Bridge area.

Hail in HARRIS, TEXAS
From 09-MAY-19 19:31:00 to 09-MAY-19 19:31:00 (CST-6)
Location: HERMOSSEY
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Tennis ball sized hail was reported.

Hail in HARRIS, TEXAS
From 09-MAY-19 20:43:00 to 09-MAY-19 20:43:00 (CST-6)
Location: SETTEGAST
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Golf ball sized hail was reported via MPING.

Hail in FORT BEND, TEXAS
From 09-MAY-19 20:56:00 to 09-MAY-19 20:56:00 (CST-6)
Location: KATY
Magnitude: 2.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Tennis ball sized hail was reported.

Hail in HARRIS, TEXAS
From 09-MAY-19 21:03:00 to 09-MAY-19 21:03:00 (CST-6)
Location: DEER PARK
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Ping pong ball sized hail was reported.

Hail in HARRIS, TEXAS
From 09-MAY-19 21:45:00 to 09-MAY-19 21:45:00 (CST-6)
Location: ELLINGTON FIELD
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ping pong ball sized hail was reported near the intersection of Clear Lake City Blvd. and Space Center Blvd.

Hail in HARRIS, TEXAS
From 09-MAY-19 21:46:00 to 09-MAY-19 21:46:00 (CST-6)
Location: WEBSTER
Magnitude: 1.75 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Golf ball sized hail was reported.

Hail in HARRIS, TEXAS
From 09-MAY-19 21:59:00 to 09-MAY-19 21:59:00 (CST-6)
Location: ELLINGTON FIELD
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Ping pong ball sized hail was blowing through house windows.

Hail in MATAGORDA, TEXAS
From 09-MAY-19 22:40:00 to 09-MAY-19 22:40:00 (CST-6)
Location: VAN VLECK
Magnitude: 1.50 
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Ping pong ball sized hail was reported.

Flash Flood in HARRIS, TEXAS
From 09-MAY-19 21:25:00 to 09-MAY-19 23:00:00 (CST-6)
Location: TODD MISSION
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

The access roads for Highway 69 North and the Sam Houston Tollway were impassable due to high flood waters.

Flash Flood in HARRIS, TEXAS
From 09-MAY-19 21:30:00 to 09-MAY-19 23:00:00 (CST-6)
Location: SUNNY SIDE
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Amateur Radio

Portions of Griggs Road were impassable due to high flood waters.

Thunderstorm Wind in GALVESTON, TEXAS
From 09-MAY-19 21:52:00 to 09-MAY-19 21:52:00 (CST-6)
Location: LEAGUE CITY
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

There were reports of trees and power lines downed along Highway 96 just west of Highway 3.

Thunderstorm Wind in GALVESTON, TEXAS
From 09-MAY-19 22:24:00 to 09-MAY-19 22:25:00 (CST-6)
Location: DICKINSON
Magnitude: 55.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Thunderstorm winds damaged the roof of the volunteer fire department.

Flash Flood in HARRIS, TEXAS
From 09-MAY-19 22:15:00 to 10-MAY-19 00:15:00 (CST-6)
Location: WEBSTER
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

Street flooding was reported in the Clear Lake area.

Flash Flood in HARRIS, TEXAS
From 09-MAY-19 23:45:00 to 10-MAY-19 02:00:00 (CST-6)
Location: (EFD)ELLINGTON AFB
Flood cause: Heavy Rain
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

Flooded streets with water reaching into residential home yards.

Thunderstorm Wind in HARRIS, TEXAS
From 09-MAY-19 21:10:00 to 09-MAY-19 21:10:00 (CST-6)
Location: HARMASTON
Magnitude: 56.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Social Media

There was pine tree damage at a strip mall off of FM 1960.

Thunderstorm Wind in FORT BEND, TEXAS
From 09-MAY-19 20:10:00 to 09-MAY-19 20:10:00 (CST-6)
Location: BEASLEY
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Department of Highways

Trees were downed along FM 360.

Hail in HARRIS, TEXAS
From 09-MAY-19 18:55:00 to 09-MAY-19 18:55:00 (CST-6)
Location: HERMOSSEY
Magnitude: 2.00 
Reported by: Social Media

Hen egg sized hail was observed near the intersection of Beltway 8 and the Katy Freeway.

Hail in POLK, TEXAS
From 09-MAY-19 19:08:00 to 09-MAY-19 19:08:00 (CST-6)
Location: ONALASKA
Magnitude: 1.75 
Reported by: Social Media

Golf ball sized hail was reported.

Hail in FORT BEND, TEXAS
From 09-MAY-19 19:15:00 to 09-MAY-19 19:15:00 (CST-6)
Location: KATY
Magnitude: 1.50 
Reported by: Public

Ping pong ball sized hail was reported.

Hail in POLK, TEXAS
From 09-MAY-19 18:55:00 to 09-MAY-19 18:55:00 (CST-6)
Location: ONALASKA
Magnitude: 4.50 
Reported by: Public

Tennis to softball sized hail was reported.

Hail in FORT BEND, TEXAS
From 09-MAY-19 19:24:00 to 09-MAY-19 19:24:00 (CST-6)
Location: KATY
Magnitude: 2.50 
Reported by: Trained Spotter

Tennis ball sized hail was reported.

Flash Flood in HARRIS, TEXAS
From 09-MAY-19 19:50:00 to 09-MAY-19 21:30:00 (CST-6)
Location: KATY
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Many west and northwestern Houston roadways became impassable due to flooding. There were many stranded or flooded vehicles near the Katy Freeway with reports of some high water rescues from vehicles.

Flash Flood in WALLER, TEXAS
From 09-MAY-19 20:20:00 to 09-MAY-19 22:00:00 (CST-6)
Location: WALLER
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: County Official

There was a high water rescue reported at Field Store Road and Waller-Spring Creek Road.

Hail in HARRIS, TEXAS
From 09-MAY-19 21:00:00 to 09-MAY-19 21:00:00 (CST-6)
Location: FAUNA
Magnitude: 2.00 
Reported by: Public

Hen egg sized hail was reported at a Dairy Queen near the intersection of South Lake Houston Parkway and Beaumont Highway.

Flash Flood in GALVESTON, TEXAS
From 09-MAY-19 22:15:00 to 10-MAY-19 01:15:00 (CST-6)
Location: LEAGUE CITY S S ARPT
Flood cause: Heavy Rain
Property damage: 20.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Flash flooding lead to impassable roads that extended from Friendswood and League City down the Gulf Freeway to include, Dickinson, Texas City and the city of Galveston. One house flooded in Dickinson with some vehicle flooding. Approximately 25 vehicles were flooded in Texas City with some water entering the Heights Elementary School.

Hail in HARRIS, TEXAS
From 09-MAY-19 19:25:00 to 09-MAY-19 19:25:00 (CST-6)
Location: CYPRESS
Magnitude: 1.25 
Reported by: Social Media

Half dollar sized hail was reported.

Hail in COLORADO, TEXAS
From 09-MAY-19 18:06:00 to 09-MAY-19 18:06:00 (CST-6)
Location: OAKLAND
Magnitude: 1.00 
Reported by: Public

Quarter sized hail was reported.

Hail in HARRIS, TEXAS
From 09-MAY-19 18:44:00 to 09-MAY-19 18:44:00 (CST-6)
Location: ADDICKS
Magnitude: 1.75 
Reported by: Trained Spotter

Golf ball sized hail was reported.

Hail in HARRIS, TEXAS
From 09-MAY-19 18:50:00 to 09-MAY-19 18:50:00 (CST-6)
Location: FAIRBANKS
Magnitude: 1.75 
Reported by: Social Media

There were numerous reports of quarter to golf ball sized hail around the west and northwest sides of the Houston area.