A large upper level storm system tracked across eastern Iowa, northwest Illinois, and northeast Missouri Thursday night and Friday morning.  This system brought a long duration snow event to the region, with totals mainly between 2 and 6 inches.  This was also the most snow to ever fall on Halloween for much of the forecast area.

Winter Weather in MERCER, ILLINOIS
From 30-OCT-19 18:00:00 to 31-OCT-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

COOP Observer snowfall reports ranged from 3.5 inches 3 miles west northwest of New Boston to 4.0 inches in Aledo.

Winter Weather in HENDERSON, ILLINOIS
From 30-OCT-19 17:00:00 to 31-OCT-19 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP Observer in Gladstone reported 2.5 inches of snow. A trained spotter reported 3.5 inches in Oquawka.

Winter Weather in WARREN, ILLINOIS
From 30-OCT-19 18:00:00 to 31-OCT-19 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

COOP Observer snowfall reports ranged from 4.0 inches in Monmouth to 5.0 inches 4 miles northwest of Monmouth.

Winter Weather in HANCOCK, ILLINOIS
From 30-OCT-19 19:00:00 to 31-OCT-19 09:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

Snowfall reports ranged from 2.0 inches from the COOP Observer at Augusta to 3.6 inches from a trained spotter 2 miles northeast of Colusa.

Winter Weather in MCDONOUGH, ILLINOIS
From 30-OCT-19 18:00:00 to 31-OCT-19 10:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

Snowfall reports ranged from 3.5 inches of snow from A CoCoRaHS Observer 3 miles west of Macomb to 4.0 inches 2 miles east of Macomb.

Winter Weather in ROCK ISLAND, ILLINOIS
From 30-OCT-19 18:12:00 to 31-OCT-19 20:06:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

The Official NWS Observation at the Quad City Airport in Moline was 4.7 inches.

Winter Weather in HENRY, ILLINOIS
From 30-OCT-19 18:30:00 to 31-OCT-19 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reports ranged from 2.9 inches 2 miles southwest of Galva  to 4.0 inches 2 miles north northeast of Warner.

Winter Weather in JO DAVIESS, ILLINOIS
From 30-OCT-19 13:25:00 to 31-OCT-19 12:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP Observer near Stockton reported 4.0 inches  of snow. A trained spotter reported 3.6 inches near Nora.

Winter Weather in STEPHENSON, ILLINOIS
From 30-OCT-19 17:30:00 to 31-OCT-19 14:30:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

Trained spotter reports ranged from 3.5 inches 2 miles west of Afolkey and McConnell to 5.0 inches 1 mile east of Freeport and near Orangeville.

Winter Weather in CARROLL, ILLINOIS
From 30-OCT-19 17:00:00 to 31-OCT-19 13:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Trained Spotter

A trained spotter reported 3.8 inches of snow in Mount Carroll. The COOP Observer in Mount Carroll reported 4.0 inches of snow.

Winter Weather in WHITESIDE, ILLINOIS
From 30-OCT-19 18:00:00 to 31-OCT-19 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

COOP Observer snowfall reports ranged from 2.5 inches in Rock Falls to 5.0 inches in Prophetstown. A trained spotter reported 1.5 inches 1 mile south southwest of Coleta.

Winter Weather in BUREAU, ILLINOIS
From 30-OCT-19 19:00:00 to 31-OCT-19 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: CoCoRaHS

A CoCoRaHS observer near Princeton reported 2.9 inches of snow.

Winter Weather in PUTNAM, ILLINOIS
From 30-OCT-19 19:30:00 to 31-OCT-19 16:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: COOP Observer

The COOP Observer in Putnam reported 3.9 inches of snow.