ARKANSAS, USA — 1:08 a.m. - Little Rock's hourly rain gauges clocked 1.71in. + 1.44in. + 1in. in the last 3 hours alone. 

Rainfall guages 01/11
KTHV

-----------------------------------------

The potent storm system is on track to arrive tonight bringing with it a potential for widespread wind damage, tornadoes and flash flooding.

SPC Day 1
High impact from storms overnight
KTHV

Here's the level of impact we're expecting for damaging wind gusts. Some wind gusts have the potential to exceed 50-60 mph, please take all warnings seriously. 

Tornado impact also falls in the medium to a high category with this system.  Tornadoes could be more intense and last longer than usual. 

RELATED: How to customize the stories and alerts you get from THV11

RELATED: THV11 has a new app, download it here!

FLASH FLOOD WATCH:


Several inches of rain are in the forecast with this system.

The most torrential rain during Friday evening and persist into Saturday.

Flash flooding will be possible for small creeks and streams, low lying areas, and poor drainage locations.

manual rainfall forecast
KTHV

Here is what you need to know:

Saturday: Early in the morning, storms could be severe through 5 am. 

The temperatures will be turning colder, dropping through the day from the 50s into 40s. 

Rain could end as a wintry mix to snow in northwest Arkansas. A light accumulation of up to 1” looks possible.

RELATED: Knowing the difference between a tornado watch and tornado warning

The Weather Set-up

For severe storms to develop, the atmosphere needs to have moisture, heat, something to lift the air, storm fuel, and higher winds above the surface.

SEVERE WEATHER
KTHV

We will have plenty of moisture in the atmosphere, as humidity increases.  

Once Dew points rise to at least 55°,  the environment is ripe for storms and heavy rain.

SEVERE WEATHER
KTHV

Temperatures will warm well into the 60s and low 70s on Friday afternoon. 

Warm air creates buoyancy in the atmosphere and provides energy for storms to tap into. 

Severe Weather
KTHV

RELATED: Central Arkansas prepares for storms by clearing debris

A key ingredient for severe weather is fast-moving air at 5000 feet above the surface; this is called the low-level jet!  The forecast overnight shows winds of 60 to 80 mph over central Arkansas at this level. 

SEVERE WEATHER
KTHV

Wind changing direction and speed as you go up in the atmosphere produces “SHEAR”. When shear is in place storms could rotate and produce tornadoes.

SEVERE WEATHER
KTHV

Stay tuned to THV11 through the rest of the week for the latest updates.