Tuesday evening in the Lake Houston area. No flood, flash flood or river flood alert is in effect for Harris, Montgomery or Liberty counties. One Heat Advisory is active and runs until 7 p.m. Central this evening.
Lake Levels at a Glance
| Lake | Level | Percent full | Reading |
|---|---|---|---|
| Lake Houston | 42.48 feet | 100.0% | 5:30 p.m. Central, Tuesday, September 15 |
| Lake Conroe | 199.87 feet | 94.7% | Daily value posted for September 15 |
Lake Houston
The U.S. Geological Survey gauge at Lk Houston nr Sheldon, site number 08072000, read 42.48 feet at 5:30 p.m. Central on Tuesday, September 15. That is up 0.03 feet from the 42.45 feet the same gauge read at 5:30 p.m. Monday, and level with the 42.48 feet it read at 5:30 a.m. this morning.
Across the past 48 hours the gauge has stayed inside a range of 42.40 to 42.51 feet over 190 readings running back to 6:15 p.m. Sunday, September 13. That is an eleven hundredths of a foot spread, which is the ordinary daily rise and fall of a lake that is not responding to rain.
The Texas Water Development Board lists Lake Houston at 42.47 feet and 100.0 percent full for September 15. The board posts one value per day, so a hundredth of a foot between it and an evening gauge reading is agreement rather than a discrepancy.
Lake Conroe
The Texas Water Development Board lists Lake Conroe at 199.87 feet and 94.7 percent full for September 15. That row is unchanged from the value the board posted for September 14, matching it in every column including surface area and all four storage figures, so this evening’s reading should not be read as a fresh independent measurement or as evidence that the lake has stopped falling. Lake Conroe stood at 199.89 feet on September 13 and had been giving up about two hundredths of a foot a day for more than a week before the posted figure flattened.
Lake Conroe sits in Montgomery County, upstream of this coverage area. San Jacinto River Authority releases from Lake Conroe flow down the West Fork of the San Jacinto River and into Lake Houston, which is why the upstream level is part of the flooding picture in Kingwood, Humble and Atascocita rather than an out of area figure.
Weather
Tonight. Mostly clear, with a low around 77 degrees. Heat index values as high as 106. Southeast wind 0 to 10 mph.
Wednesday. Mostly sunny with a slight chance of showers and thunderstorms after 1 p.m., and a high near 95 degrees. Heat index values as high as 105. East wind 0 to 5 mph. Chance of precipitation is 20 percent.
Wednesday night. A slight chance of showers and thunderstorms before 7 p.m., then partly cloudy, with a low around 77 degrees. Heat index values as high as 103. East wind 0 to 5 mph. Chance of precipitation is 20 percent.
Active Alerts
One National Weather Service alert covers this area. A Heat Advisory issued at 7:12 a.m. Central Tuesday by the National Weather Service in Houston/Galveston runs until 7 p.m. Central Tuesday evening and carries heat index values up to 110. Its area includes Inland Harris, Coastal Harris, Montgomery and Northern Liberty counties, which takes in Humble, Kingwood, Atascocita, Huffman, Summerwood and Fall Creek.
No flood, flash flood or river flood alert is active for Harris, Montgomery or Liberty counties. Both lakes are within their normal operating ranges.
Sources
Lake Houston elevation from the U.S. Geological Survey gauge 08072000. Lake Conroe and Lake Houston percent full from the Texas Water Development Board. Forecast and alerts from the National Weather Service Houston/Galveston office. Gauge readings are provisional and subject to revision by the USGS.
