Scattered showers and thunderstorms have begun to develop north of the area this afternoon. This activity is expected to spread southward during the rest of the afternoon and will begin to impact areas northeast of a line from Madisonville to Livingston. Any thunderstorms that do develop have the potential to be strong...with gusty winds...brief heavy rainfall and dangerous cloud to ground lightning. Individual thunderstorms should move to the east at around 20 mph.
Forecast for San Jacinto
Updated: 5:04 PM CDT on July 5, 2009
Heat advisory in effect until 7 PM CDT this evening...
Tonight
Partly cloudy. A slight chance of showers and thunderstorms in the evening...then scattered showers and thunderstorms after midnight. Lows in the mid 70s. South winds 5 to 10 mph. Chance of rain 20 percent in the evening increasing to 30 percent after midnight.
Monday
Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the lower 90s. West winds around 5 mph.
Partly cloudy with a 20 percent chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds around 5 mph in the evening becoming light after midnight.
Tuesday
Partly cloudy with a 30 percent chance of showers and thunderstorms. Highs in the lower 90s. Southwest winds around 5 mph.
... Heat advisory remains in effect until 7 PM CDT this evening...
A heat advisory remains in effect until 7 PM CDT this evening.
Near record breaking heat is expected again today with afternoon high temperatures ranging from the upper 90s to lower 100s. Late morning through late afternoon heat index values of 102 to 107 should be commonplace with some areas briefly reaching 108 to 109.
Increasing rain chances beginning tonight and then continuing through the first half of the upcoming week should preclude the extension of the heat advisory.
Precautionary/preparedness actions...
If you plan to be outside... avoid prolonged exposure or strenuous physical activity. Your body can lose up to a gallon of water an hour through perspiration. Drink plenty of fluids to avoid dehydration. Alcoholic and caffeinated beverages can increase the rate of water loss in your body... increasing the risk of heat exhaustion or stroke. Wear lightweight... light-colored... loose-fitting clothing. Wear a hat to shield yourself from the sun... and use a sunscreen to reduce possible sunburn.
Record Report
Statement as of 5:23 PM CDT on July 05, 2009
... Record high temperature set at Houston intercontinental...
A record high temperature of 102 degrees was set at Houston Intercontinental Airport today. This smashes the previous record of 99 set in 2005. This is the eleventh day this Summer with the temperature reaching or exceeding 100 degrees.