Alex has made landfall in the small village of La Yuega, Mexico. It appears to be actually heading southwest now.

NATIONAL WEATHER SERVICE DOPPLER RADAR FROM BROWNSVILLE TEXAS AND
AIR FORCE RESERVE UNIT HURRICANE HUNTER OBSERVATIONS INDICATE THAT
THE EYE OF HURRICANE ALEX MADE LANDFALL AROUND 9 PM CDT...0200 UTC
ALONG THE COAST OF MEXICO IN THE MUNICIPALITY OF SOTO LA MARINA...
ABOUT 110 MI...180 KM SOUTH OF BROWNSVILLE. MAXIMUM SUSTAINED
WINDS AT LANDFALL WERE ESTIMATED TO BE 105 MPH...165 KM/HR...A
CATEGORY TWO HURRICANE ON THE SAFFIR-SIMPSON HURRICANE WIND SCALE.

SUMMARY OF 900 PM CDT...0200 UTC...INFORMATION
--------------------------------------------------
LOCATION...24.3N 97.7W
ABOUT 35 MI...55 KM N OF LA PESCA MEXICO
ABOUT 110 MI...180 KM S OF BROWNSVILLE TEXAS
MAXIMUM SUSTAINED WINDS...105 MPH...165 KM/HR
PRESENT MOVEMENT...W OR 260 DEGREES AT 10 MPH...17 KM/HR
MINIMUM CENTRAL PRESSURE...947 MB...27.96 INCHES

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The Flooding rains will probably be the biggest deal, the area of landfall is not very populated.