Thunderstorms developed west of the Houston metro area in the mid afternoon hours of the 27th and moved east across the Houston area around sunset. Severe thunderstorms redeveloped overnight across western Harris County and produced flash flooding that severely impacted roads and highways in and around Houston. Later that afternoon a lone cell developed between Hearne and College Station and produced several brief tornado touchdowns as it moved southeastward into Madison County.

Thunderstorm Wind in HARRIS, TEXAS
From 27-APR-09 17:38:00 to 27-APR-09 17:38:00 (CST-6)
Location: HOUSTON
Magnitude: 52.00 EG
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

A wind gust was measured on the University of Houston campus.

Tornado in MADISON, TEXAS
From 28-APR-09 16:30:00 to 28-APR-09 16:32:00 (CST-6)
Location: MECCA
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

Storm chasers from Texas A&M University observed a brief touchdown east of their location on FM 39 south of Highway 21. This was the third and final reported tornado with this thunderstorm.

Flash Flood in HARRIS, TEXAS
From 27-APR-09 17:35:00 to 27-APR-09 19:45:00 (CST-6)
Location: BELLAIRE JCT
Flood cause: Heavy Rain
Property damage: 5.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Heavy rainfall on saturated ground led to closures of flood prone roads with several cars reported stranded.

Flash Flood in MONTGOMERY, TEXAS
From 28-APR-09 01:30:00 to 28-APR-09 02:35:00 (CST-6)
Location: TAMINA
Flood cause: Heavy Rain
Property damage: 750.00K
Crop damage: 0.00K
Reported by: Newspaper

Heavy rainfall flooded 30 homes in the Chateau Woods subdivision in the southern part of the county.

Flash Flood in GRIMES, TEXAS
From 28-APR-09 05:28:00 to 28-APR-09 06:30:00 (CST-6)
Location: NAVASOTA
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Heavy rainfall produced flash flooding in and around the community of Navasota.

Flash Flood in BRAZOS, TEXAS
From 28-APR-09 10:23:00 to 28-APR-09 12:00:00 (CST-6)
Location: SIMS
Flood cause: Heavy Rain
Property damage: 2.00K
Crop damage: 0.00K
Reported by: Law Enforcement

Highway 190 in the northern part of the county was closed due to high water.

Funnel Cloud in FORT BEND, TEXAS
From 27-APR-09 16:15:00 to 27-APR-09 16:17:00 (CST-6)
Location: ORCHARD
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A funnel cloud was sighted and reported to persist for approximately two minutes.

Thunderstorm Wind in HARRIS, TEXAS
From 27-APR-09 17:10:00 to 27-APR-09 17:10:00 (CST-6)
Location: ROSSLYN
Magnitude: 50.00 EG
Property damage: 1.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A tree was downed across the access road of Highway 290 near West 43rd.

Thunderstorm Wind in HARRIS, TEXAS
From 27-APR-09 17:25:00 to 27-APR-09 17:25:00 (CST-6)
Location: HOUSTON HGTS
Magnitude: 50.00 EG
Property damage: 0.50K
Crop damage: 0.00K
Reported by: NWS Employee

A large tree was downed across the road in the 2000 block of Banks Street near the intersection of Banks and Hazard Street, one block south of US 59.

Funnel Cloud in AUSTIN, TEXAS
From 27-APR-09 14:50:00 to 27-APR-09 14:50:00 (CST-6)
Location: SHELBY
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Law Enforcement

A brief funnel cloud was sighted near Shelby.

Flash Flood in MADISON, TEXAS
From 28-APR-09 17:10:00 to 28-APR-09 19:00:00 (CST-6)
Location: NORMANGEE
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Emergency Manager

Heavy rainfall from a slow moving tornadic thunderstorm closed portions of Old San Antonio Road between FM 1452 and Normangee.

Flash Flood in HARRIS, TEXAS
From 28-APR-09 01:25:00 to 28-APR-09 06:00:00 (CST-6)
Location: MISSOURI CITY
Flood cause: Heavy Rain
Property damage: 15.00M
Crop damage: 0.00K
Reported by: Amateur Radio

A large, slow moving thunderstorm produced widespread heavy rainfall across western portions of Harris County during the early morning hours. Many roads including portions of US 59, Interstate 10 West, Beltway 8 West, and the 610 Loop were impassable for most of the morning rush hour, with numerous cars becoming stranded by high water. One fatality occurred when a vehicle was swept into the drainage system near the Katy Freeway (Interstate 10 W) and Beltway 8.
In addition to the major disruption to the morning commute, over 2,100 homes received some amount of water intrusion from this event. This ranks as the fourth largest number of homes flooded in a single event for Harris County.

Tornado in MADISON, TEXAS
From 28-APR-09 15:00:00 to 28-APR-09 15:02:00 (CST-6)
Location: NORTH ZULCH
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Public

A brief touchdown was observed near North Zulch in rural Madison County. This was the second reported tornado with this particular thunderstorm.

Tornado in BRAZOS, TEXAS
From 28-APR-09 14:41:00 to 28-APR-09 14:43:00 (CST-6)
Location: EDGE
Tornado F-scale: EF0
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Storm Chaser

A tornado was spotted near OSR and the Edge cutoff near the county boundary between Brazos and Robertson counties.

Flash Flood in HARRIS, TEXAS
From 28-APR-09 12:00:00 to 28-APR-09 13:00:00 (CST-6)
Location: SPRING SKYLINE ARPT
Flood cause: Heavy Rain
Property damage: 10.00K
Crop damage: 0.00K
Reported by: Broadcast Media

High water from an isolated slow moving thunderstorm closed both access roads and several mainlanes of Interstate 45 North at Spring-Stuebner Road.