A “potent storm system” is moving through North Texas Tuesday morning, ushering in a threat of heavy downpours, risk of spin-up tornados and isolated instances of large hail, according to the National Weather Service.

An isolated tornado warning is moving through south Fort Worth and into southern Dallas and Ellis counties.

A tornado Watch is in effect for the major Dallas-Fort Worth counties, including Collin, Denton, Dallas, Ellis and Tarrant. Many surrounding counties also are under a tornado watch until 11 a.m. Tuesday.

NBC5 (KXAN) meteorologists warn of high winds with gusts up to 60-70 mph. The storm is moving west to east across the metroplex, sparking isolated tornado warnings, including Tarrant and Johnson counties.

From snow to 100-degree heat, we’ve got you covered.

Some cities, including Burleson and Dallas, activated their storm sirens a little after 5 a.m.

The storm could impact the morning commute for North Texas drivers, forecasters said.

Tornado Watch issued on March 3.(KXAS-TV (NBC5))

There was a 100 percent chance of rain on Tuesday, with NBC5 meteorologist Grant Johnston saying the line of rough weather will move in from the west toward Dallas-Fort Worth during the early morning hours and will intensify.

“It could be a rough drive to work or off to school tomorrow morning,” he said. “Some of these could be severe with the potential for damaging winds being the main concern. We can’t rule out a brief tornado.”

The weather service also predicts that wind gusts will reach as high as 45 mph on Tuesday. A wind advisory will be in effect for much of the region starting 11 p.m. Monday and expiring 9 p.m. Tuesday evening.

Related:What do risk levels mean when severe thunderstorms are in North Texas forecast?

Sunday night’s scattered showers brought about 0.3 inches of rain at Dallas Love Field airport, according to the weather service’s Fort Worth office. Rainy conditions are expected after midnight Monday, with low temperatures in the low 50s and wind gusts reaching up to 30 mph.

However, the area facing the greatest severe weather risk — large hail and damaging winds — is roughly along and east of Interstate 35 during tonight and the early morning hours of Tuesday. According to the weather service, “a tornado or two” are also possible.

Related:When is peak tornado season in North Texas? Here’s when the severe events most often occur

After the showers and storms Tuesday morning, the weather is forecast to be sunny and breezy, with high temperatures around 70 degrees and wind gusts as high as 40 mph.

The storm system is currently forecast to exit the Dallas-Fort Worth area midday Tuesday before much drier air arrives, increasing fire risks west of I-35, federal forecasters said.

Temperatures are expected to increase throughout the rest of the week before a chance of rain returns Saturday.

Dallas forecast via KXAS-TV (NBC5):

TUESDAY: A 90% chance of morning showers and thunderstorms, some strong to severe. Turning windy and mild for the afternoon with increased wildfire danger for western North Texas. Some strong to severe storms possible in East Texas Tuesday afternoon. Low: 44. High: 72.

WEDNESDAY: Mostly sunny, breezy and pleasant. Low: 40. High: 63.

THURSDAY: Partly to mostly cloudy and pleasant. Low: 54. High: 68.

FRIDAY: Mostly sunny and mild. Low: 50. High: 79.

SATURDAY: Sun, clouds and a tad cooler. Low: 42. High: 65.