Strong to severe storms moved into Alabama on Tuesday night and early Wednesday.

Many tornado warnings had been issued as of midnight, mostly for parts of northwestern and west-central Alabama.

The National Weather Service in Birmingham said a spotter confirmed that a large and dangerous tornado was on the ground in Marion County near Winfield at around midnight.

Several tornado watches were also in effect for northern and western Alabama.

The first was for northern Alabama until 3 a.m. Wednesday:

The second was for western parts of the state and will be in effect until 5 a.m. Wednesday:

8:53pm CST #SPC_Watch WW 508 TORNADO AL LA MS CW 300250Z - 301100Z, https://t.co/acpS5efElf pic.twitter.com/ubxOVtLwZj -- NWS SPC (@NWSSPC) November 30, 2016

More supercell storms had formed to the west in Mississippi and were moving eastward into Alabama.

The weather service in Birmingham said late Tuesday that storms could increase in intensity as they move into northwestern Alabama overnight.

The weather service in Huntsville echoed that assessment.

The weather service in Birmingham said concern was very high about additional tornado development overnight.

The National Weather Service said strong to severe storms would continue to move across parts of the state overnight, and the primary threats would be hail, damaging wind gusts and brief tornadoes.

The weather service in Birmingham said a few strong tornadoes couldn't be ruled out across western parts of central Alabama, including Lamar, Marion, Fayette and Winston counties through 3 a.m.

Those counties had all had warnings issued for them at one time or another late Tuesday.

The storms were beginning to form into a squall line late Tuesday which could also produce damaging winds and a few brief tornadoes through the overnight hours.

South Alabama was only seeing showers so far as of 11 p.m. Tuesday, but the weather service in Mobile said more rain and storms were expected to affect the area near sunrise.

More severe weather could continue into midday Wednesday for eastern and southeastern parts of the state.

Alabama is in the midst of its so-called "secondary" severe weather season. There has not been a confirmed tornado in the state since April 6, according to information from the weather service in Birmingham.

So far in 2016, February has been the most active month for tornadoes, with 21 reported. There were also 13 tornadoes in March, and nine in April.