A front brings better chances of rain Sunday into Monday

FORECAST HIGHLIGHTS

HOT, FEW STORMS THIS PM: Mainly north of I-10 this evening
HOT SATURDAY, STRAY STORM: Isolated afternoon storms
SUNDAY/MONDAY: A front brings better chances for rain
IMPACTS?: Heavy rain through Monday could cause isolated flash flooding.

FORECAST

We’re almost to a nice change in the forecast.

HEAT INDEX 102+ THIS AFTERNOON, STRAY STORM POSSIBLE

The heat will crank up quickly today, and could lead to a stray storm or two this evening along and north of I-10. Many spots will top out in the triple digits. Add in some humidity and heat indices will reach to near 105°.

STILL HOT SATURDAY, AFTERNOON ISOLATED STORMS

The front will continue to stall north of San Antonio on Saturday. This will keep us hot and help to touch off a few storms during the afternoon. Like today, the best chances for storms will be along and north of I-10.

FRONT FOR SUNDAY INTO MONDAY

A slow-moving front will finally push southward by Sunday, helping to spark scattered showers and storms across the area. Rain chances will build through the weekend, peaking in intensity from Sunday into early Monday. While it won’t be a total washout, locally heavy downpours could lead to isolated flash flooding, especially in parts of the Hill Country and southern Edwards Plateau. Lingering rain is possible through Monday afternoon, but cooler air will follow, with highs dropping to near 90°.

Locally heavy rain is possible with rainfall amounts ranging from 1 to 3 inches. Abundant moisture will fuel afternoon and evening thunderstorms, especially across the Hill Country, Edwards Plateau, and along the I-35 corridor. While widespread flooding isn’t expected, slow-moving storms and repeated downpours could lead to urban and small stream flooding, prompting a marginal risk (level 1 of 4) for flash flooding across the region.