![\"texas](\"http:\/\/us.weatheramerica.com\/wp-content\/uploads\/sites\/2\/2025\/07\/texas-rain-2507-2.jpg\")
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After a sweltering and parched week<\/strong> across much of Houston<\/strong>, a shift in the atmosphere<\/strong> is gearing up to bring heavy rainfall<\/strong> Friday, raising concerns for flash flooding<\/strong> in several parts of Southeast Texas<\/strong>, especially south of Interstate 10<\/strong>.<\/p>\n <\/p>\n By Friday morning<\/strong>, atmospheric moisture levels<\/strong> \u2014 technically called precipitable water<\/strong> \u2014 are projected to rise above 2 inches<\/strong>, a signal that torrential rain<\/strong> could occur in a short span of time. For context, precipitable water<\/strong> reflects the amount of liquid water that could fall if all the water vapor from the surface up to the top of the atmosphere were condensed. Values above 2 inches<\/strong> often point to flood-risk conditions<\/strong> during thunderstorms.<\/p>\n <\/p>\n This moisture surge<\/strong> is being driven by a tropical disturbance<\/strong> first identified late Tuesday<\/strong> by the National Hurricane Center<\/strong>, just off the Florida Atlantic coast<\/strong>. That system has since moved steadily west across the Gulf of Mexico<\/strong>, echoing the path of a similar system that recently unleashed downpours from Florida<\/strong> to Louisiana<\/strong>.<\/p>\n <\/p>\n Now, as this tropical wave<\/strong> drifts closer to Texas<\/strong>, the National Weather Service\u2019s Weather Prediction Center<\/strong> has marked a Level 1 out of 4 flooding risk<\/strong> for Houston<\/strong>, Galveston<\/strong>, and Beaumont<\/strong>. That corresponds to about a 5% chance<\/strong> of localized flash flooding<\/strong>, primarily in low-lying<\/strong> and flood-prone zones<\/strong>. Morning hours<\/strong> are expected to stay relatively dry as the storms need daytime heating<\/strong> to intensify \u2014 meaning commuters before noon<\/strong> might dodge the worst of it.<\/p>\n <\/p>\n Rainfall projections through Sunday morning<\/strong> show totals around 1 inch (25 mm)<\/strong> for Southeast Texas<\/strong>, with the heaviest rainfall likely to fall south of I-10<\/strong>, while areas north of Houston<\/strong> may see lighter totals. Afternoon travel<\/strong>, especially on Friday<\/strong>, could become challenging as intense rainfall<\/strong> causes brief urban flooding<\/strong>.<\/p>\n <\/p>\n Although evening skies<\/strong> are expected to clear somewhat, it\u2019s wise to keep an umbrella handy<\/strong>. Rain chances dip after sunset as the sun\u2019s heat fades<\/strong>, reducing the fuel thunderstorms need to develop.<\/p>\n <\/p>\n Moving into Saturday<\/strong>, the pattern looks familiar: Dry mornings<\/strong>, followed by scattered storms and heavy rain<\/strong> in the afternoon. Places like Lake Jackson<\/strong> and Galveston<\/strong> could wake up to some early rain showers<\/strong>, but the main storm activity<\/strong> is expected later in the day. The flood threat<\/strong> will linger into Saturday night<\/strong>, though conditions should improve by Sunday<\/strong> as temperatures rise<\/strong> again.<\/p>\n <\/p>\n While a full dry-out<\/strong> isn\u2019t expected to start the new week, the chance for rain significantly decreases<\/strong>. Expect temperatures<\/strong> to climb into the upper 90s Fahrenheit (around 36\u00b0C)<\/strong> by Monday<\/strong>, with Sunday\u2019s highs<\/strong> also reaching the mid-90s (around 35\u00b0C)<\/strong>.<\/p>\n <\/p>\n This current tropical disturbance<\/strong> offers a timely reminder of how quickly tropical systems<\/strong> can evolve. These start as tropical waves<\/strong>, which are essentially troughs of low atmospheric pressure<\/strong> drifting from east to west<\/strong>. As they strengthen and begin to rotate, they may become tropical depressions<\/strong> with sustained winds below 39 mph<\/strong>. Once winds cross that threshold, the system becomes a named tropical storm<\/strong>.<\/p>\n <\/p>\n Should conditions remain favorable \u2014 like warm sea-surface temperatures<\/strong> and low wind shear<\/strong> \u2014 these storms can strengthen further. At 74 mph<\/strong>, the system becomes a hurricane<\/strong>, with the added risk of coastal storm surge<\/strong> posing a life-threatening danger to low-elevation communities<\/strong>.<\/p>\n <\/p>\n Houston<\/strong>, Southeast Texas<\/strong>, and especially coastal zones<\/strong> like Galveston<\/strong>, will need to stay alert this Friday and Saturday<\/strong> as the wet weather returns<\/strong> in force.<\/p>\n","protected":false},"excerpt":{"rendered":" After a sweltering and parched week across much of Houston, a shift in the atmosphere is gearing up to bring heavy rainfall Friday, raising concerns for flash flooding in several parts of Southeast Texas, especially south of Interstate 10. By Friday morning, atmospheric moisture levels \u2014 technically called precipitable water \u2014 are projected to […]<\/p>\n","protected":false},"author":15,"featured_media":6420,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6419","post","type-post","status-publish","format-standard","has-post-thumbnail","category-news"],"yoast_head":"\n