29 Jun 2021 | 05:26 AM UTC
US: Adverse weather forecast across central regions through early June 30 /update 1
Heavy rainfall forecast across portions of central US through at least early June 30.
Event
Thunderstorms with rounds of heavy rainfall and possible flooding are forecast to occur across portions of the central US through at least early June 30. The affected area includes northern Illinois, far northeastern Indiana, far southeastern Iowa, southeastern Kansas, central Missouri, eastern New Mexico, central Oklahoma, and northern and western Texas.
The Weather Prediction Center (WPC) has issued a "Moderate Risk" for excessive rainfall for western Texas and far southeastern New Mexico through at least June 29, where the heaviest rainfall is forecast. A "Slight Risk" for excessive rainfall is in place for northern Illinois, far northeastern Indiana, far southeastern Iowa, southeastern Kansas, central Missouri, eastern New Mexico, central Oklahoma, and northern and western Texas through at least early June 30. Additionally, flash flood watches and warnings are in place for portions of Illinois, northwest Indiana, Iowa, southeast Kansas, northeast Missouri, New Mexico, northeast Oklahoma, and southwest Texas. Officials could update and possibly extend the coverage of the relevant weather alerts over the coming days.
Hazardous Conditions
The storms will be capable of producing heavy downpours, damaging winds, and hail across the affected area through at least early June 30. Should sustained heavy rainfall occur, it 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 the soil has become saturated by heavy rainfall. Disruptions to electricity and telecommunications services are possible where significant flooding, landslides, or strong winds impact utility networks.
Transport
Floodwaters and debris flows could render some bridges, rail networks, or roadways impassable, impacting overland travel 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 could also trigger intermittent flight delays and cancellations at regional airports, though these are unlikely to be severe or prolonged. Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas that see heavy rainfall and potential track inundation. Localized business disruptions may occur in low-lying areas.
Advice
Confirm flights. 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 through at least June 30. Do not attempt to drive through flooded areas. Review contingency plans and be prepared to move quickly to shelter if tornado warnings are issued. Charge battery-powered devices in the case of prolonged electricity outages.
