Heavy rain is still expected to plague southeast Texas through at least the first half of Halloween and a Flash Flood Watch is in effect until 1pm Thursday for Harris County and areas west and north.
Scattered rain showers on Wednesday will become heavier and more widespread after midnight and through Halloween morning, with the heaviest rain passing to the east of the area Halloween afternoon and early evening.
The highest rainfall totals are expected north of Houston, where three inches will be common. Around metropolitan Houston, expect rainfall closer to two inches. Throughout the area, though, isolated five inch totals are possible, thanks to the potential for training thunderstorms with this storm system. It is impossible to pinpoint in advance where training thunderstorms will set up. But, in areas where they do, flooding is a real threat.
Other hazards from this storm system include gusty winds in excess of 40 mph and isolated weak tornadoes. Areas north of Houston will face the greatest risk for severe weather.
Rain will clear out from west to east Halloween afternoon and early evening.
After 4 p.m., when kids are beginning their trick-or-treat activities, the rain should be in the process of clearing out.
East of Houston and coastal areas will be the last to see the rain end and, therefore, will have the greatest impact from the rain during trick-or-treating.
For parents getting ready for the big evening, play it safe and plan for rain during Halloween festivities. If the rain clears out before the activities begin, consider it a bonus!