A low pressure system moved up the eastern seaboard of the United States on January 20th, with cold temperatures and strong northwest winds funneling behind the system from the night of the 20th into the morning of the 21st. This was able to produce very low wind chills across much of the state.

Cold/Wind Chill in CARROLL, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: AWOS

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.

Cold/Wind Chill in NORTHERN BALTIMORE, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.

Cold/Wind Chill in SOUTHERN BALTIMORE, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: AWOS

The combination of cold temperatures and strong winds produced wind chills as low as -5 degrees.

Cold/Wind Chill in PRINCE GEORGES, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.

Cold/Wind Chill in NORTHWEST MONTGOMERY, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.

Cold/Wind Chill in CENTRAL AND SOUTHEAST MONTGOMERY, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: AWOS

The combination of cold temperatures and strong winds produced wind chills as low as -5 degrees.

Cold/Wind Chill in NORTHWEST HOWARD, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.

Cold/Wind Chill in ANNE ARUNDEL, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: ASOS

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.

Cold/Wind Chill in CHARLES, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -5 degrees.

Cold/Wind Chill in ST. MARY'S, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: ASOS

The combination of cold temperatures and strong winds produced wind chills as low as -5 degrees.

Cold/Wind Chill in CALVERT, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -5 degrees.

Extreme Cold/Wind Chill in EXTREME WESTERN ALLEGANY, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -25 degrees.

Cold/Wind Chill in FREDERICK, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -15 degrees.

Cold/Wind Chill in CENTRAL AND EASTERN ALLEGANY, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -15 degrees.

Cold/Wind Chill in CENTRAL AND SOUTHEAST HOWARD, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.

Cold/Wind Chill in NORTHWEST HARFORD, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.

Cold/Wind Chill in SOUTHEAST HARFORD, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: Mesonet

The combination of cold temperatures and strong winds produced wind chills as low as -5 degrees.

Cold/Wind Chill in WASHINGTON, MARYLAND
From 21-JAN-19 00:00:00 to 21-JAN-19 10:00:00 (EST-5)
Reported by: ASOS

The combination of cold temperatures and strong winds produced wind chills as low as -10 degrees.