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Heavy rain from Willa, Vicente to renew flood risk in Texas at midweek

October 21, 2018; 7:03 AM

The combination of tropical moisture from Willa, Vicente and a non-tropical storm will renew the risk of flooding rain in Texas during the middle of this week.

Over the recent week, portions of central Texas received one- to three-month's worth of rain. A number of locations, including Dallas and San Antonio, have already achieved their wettest autumn on record.

A press of dry and cool air from the north brought a welcome break from the downpours for many in the Lone Star State this weekend. However, levels on some Texas rivers and lakes hit by flooding remain high.

Attempts have been made by officials to mitigate the flooding by releasing water from area dams.

The rain retreated to the Rio Grande Valley during the past weekend. However, thus far has been sporadic enough to prevent flooding problems.

Into Tuesday, rain is forecast to become more organized and shift northward.

Static Tuesday South Central

Areas from the Big Bend area of the Rio Grand to the upper Texas coast can expect an uptick in the amount of downpours and the potential for isolated flash and urban flooding during Monday night and early Tuesday.

Localized downpours will blossom in New Mexico, Arizona and western Texas on Tuesday as a non-tropical storm from the interior West begins to play a role.

Static SW Tuesday 1 pm

Another surge of heavy rain from the tropical eastern Pacific Ocean is likely in parts of Texas from later Tuesday through Wednesday. It is that batch of rain may be enough to aggravate existing flooding on a broad scale.

A general 1-3 inches of rain is forecast with up to 6 inches possible during the 24-hour period ending early Wednesday evening.

Download the free AccuWeather app to know exactly when wet weather will return to your area.

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Dangerous Willa to inundate Mexico with flooding into midweek

Two tropical systems Willa and Vicente, will help pump more moisture into the South Central states at midweek.

However, it is Willa, the stronger of the two, that is likely to retain some sort of identity, such as a tropical rainstorm after crossing Mexico.

willa 10/22

Just about all of Willa's winds will dissipate over western Mexico, but a significant amount of moisture, in the form of drenching rain will press on to the northeast.

More tropical moisture will be drawn up from the Gulf of Mexico.

A substantial amount rain is forecast over the South Central states, especially over part of central and northeastern Texas.

Static Texas Rain Wednesday 1 pm

Unfortunately some of same areas across central, southern and eastern Texas that have already been pummeled by rain over the last 10 days are likely to be hit again.

Moderate to heavy rain can trigger new flash flooding or further swell already swollen rivers and reservoirs in Texas. Officials may be forced to keep flood gates open at area dams.

The non-tropical storm will help to draw the moisture northeastward. However, the same non-tropical storm may keep the heavy rainfall moving forward enough to limit the duration of the rain and perhaps spare Texas a repeat of the flooding that occurred last week.

Not only could more rain fall on some saturated and flooded areas of Texas, but it is also expected to reach locations in northern Florida and Georgia and other areas in the Southeastern states during the latter part of this week.

Rounds of rain will be a hindrance to those still in the early stages of cleanup operations following Michael.

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