25 Nov 2022 | 03:48 AM UTC
US: Adverse weather forecast across parts of the South through at least early Nov. 26
Heavy rainfall forecast across parts of the South, US, through at least early Nov. 26. Flooding and associated disruptions possible.
Event
Heavy rainfall is forecast across eastern Texas, southern Louisiana, southern Mississippi, and southern Alabama through at least early Nov. 26. As of late Nov. 24, the National Weather Service (NWS) has issued flood watches across parts of southeastern Texas. The NWS's Weather Prediction Center (WPC) has warned of a "Moderate Risk" (Level 3 on a four-tier scale) of excessive rainfall across portions of the central and upper Texas Gulf Coast Nov. 25 through early Nov. 26. A "Slight Risk" of excessive rainfall is in place from the far upper Texas coast into southern Louisiana, southern Mississippi and portions of southwestern Alabama through early Nov. 25 and portions of the rest of eastern Texas Nov. 25 through early Nov. 26. Officials could update and possibly extend the coverage of weather alerts over the coming days.
Sustained heavy rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where heavy rainfall has saturated the soil.
Authorities could issue mandatory evacuation orders for flood-prone communities over the coming days and tornado warnings advising the public to shelter in place. Disruptions to electricity and telecommunications services are possible where severe weather impacts utility networks.
The severe weather will likely contribute to transport disruptions throughout the region. Floodwaters and debris flows may render some bridges, rail networks, or roadways impassable, impacting overland travel in and around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters.
Severe weather will also likely trigger flight delays and cancellations at airports across the affected region, including but not limited to George Bush Intercontinental (IAH) and Louis Armstrong New Orleans International (MSY) airports. Flooding could block regional rail lines; freight and passenger train delays and cancellations are likely in areas that see heavy rainfall and potential track inundation.
Localized business disruptions may occur in flood- or tornado-hit areas; some businesses might not operate at full capacity because of damage to facilities, possible evacuations, and some employees' inability to reach work sites.
Advice
Monitor local media for updated emergency and weather information. Seek updated information on weather and road conditions before driving or routing shipments through areas where severe weather is forecast. Plan accordingly for potential delivery delays if routing shipments by truck through the affected area. Do not attempt to drive through flooded areas. Confirm flights. Charge battery-powered devices in the case of prolonged electricity outages.
