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HOUSTON — Tropical Storm Imelda made landfall in Freeport Tuesday afternoon and it’s expected to hover over The Greater Houston Area for a couple of days.
The storm is “likely to produce life-threatening flash along portions of the Upper Texas Coast, including the Houston and Galveston areas,” according to the National Hurricane Center.
The latest models show some spots could see 12 to 24 inches of rain.
It’s impossible to tell you what areas will get hammered and which ones won’t. But everybody is likely to see tropical downpours that could cause flooding of low-lying areas so we should all stay weather aware.
At 3 p.m., Imelda continued its slow crawl north at 7 mph with 40 mph sustained winds and some higher gusts.
Galveston ISD and High Island ISD have canceled classes for Wednesday. Some school districts are cancelling after-school activities for Tuesday. Follow this link for additional closures.
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A Flash Flood Watch has been issued for Brazoria, Chambers, Fort Bend, Harris, Liberty, Matagorda, Galveston and Wharton counties from 1 p.m. Tuesday until Wednesday afternoon. This is likely to be extended into Thursday.
Computer models continue to increase the amount of rain we could see over the next 72 hours and it’s concerning for sure for a couple of reasons.
HOUSTON RADAR: Tropical Storm Imelda forms in the Gulf
While the ground is dry, it’s also like concrete. If we experience rain rates as high as 2 to 3 inches per hour, we’ll see much of that turn into run-off that could quickly flood some areas.
Second, a lot of runoff will likely cause bayous, streams and rivers to rise. If and only if the blockbuster amounts shown in the models come to fruition, we could see swelling of the bayous.
Here’s a timeline of what you can expect
Scattered tropical downpours move inland across southeast Texas and Houston. Storms should be moving quickly but may cause some isolated street flooding. Flood threat still low.
Tuesday night and Wednesday morning
Flash flooding becomes a larger threat as the disturbance moves onshore. Rainfall rates of 2 to 4 inches per hour and the threat for ‘training’ increases. Flood threat moderate.
Wednesday night and Thursday morning
At this point the ground across Houston and southeast Texas will become saturated. Any heavy downpours that develop and train across the area will quickly spark the threat for flash flooding on roads, creeks and bayous. Rivers will have to be closely monitored as well. Flash flood threat high.
Thursday afternoon and evening
Some computer models have the system and the rain moving north out of the Houston area Thursday evening. Others have it lingering through Thursday evening until finally exiting on Friday. For now I’ll leave the flash flood threat elevated through Thursday night.
If you live near a low lying area or spot that is prone to flooding stay close to the weather forecast and monitor the radar. Be sure to watch the weather at least once a day on KHOU 11 News and stay weather aware with us as we enter the busy time of hurricane season.
WEATHER RADAR: Track rain & storms across Texas
Five ways to prepare for flooding
There are five things you can do right now to make sure you’re ready.
1. Register for AlertHouston
Alert Houston is how the City of Houston sends out critical emergency information. It will alert you via email, text, phone call, or push alert. You can get geo-targeted warnings at your location. You can also register up to five addresses.
2. Register for Harris County’s Flood Warning System
FWS monitors rainfall at more than 250 locations along bayous, creeks, and rivers. It will alert users in real time as water levels rise through email and/or text message.
3. Look at Houston’s Flood Prone Map
The City of Houston Office of Emergency Management partnered with Houston Public Works and TxDOT to identify over 100 flood prone roadways. Drivers should check the map before rain events.
4. Download the Transtar App
5. Pay attention to meteorologists
Visit our KHOU Weather page.