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NOAA's U.S. Snow Monitoring-Recent Snowfall and Snow Depth Map.November 29, 2001 — As a widespread spate of winter weather wound down Thursday, meteorologists at NOAA's National Weather Service forecast office in Upper Michigan reported a record snowfall from the three-day storm—measured right outside their door. (Click image for larger view of NOAA's U.S. Snow Monitoring—Recent Snowfall & Snow Depth Map for Nov. 29, 2001. Click here for latest maps.)

Freezing rain and drizzle ended late Thursday morning as temperatures rose above freezing from Dallas to St. Louis, and residents from central Texas to Marquette, Mich., began to recover from three days of ice and snow.

The Marquette forecast office near Negaunee, Mich., recorded 33.1 inches of snow from midnight Nov. 26 through noon Nov. 28, according to Meteorologist-in-Charge Ed Fenelon. Fenelon said snowfall at the office set a record Monday, Nov. 26, and kept building. The 9.2 inches that fell Monday topped the record of 8.4 inches set in 1979. Tuesday, Fenelon said, the office recorded 19.2 inches, more than doubling the previous record for the day of 7.5 inches set in 1966. By the time the storm ended Wednesday, the total had reached 33.1 inches.

Fenelon said an upslope flow contributed to the heavy snowfall in the area. "In upslope flow, the air is forced upward by the terrain, which causes temperatures to drop and moisture to condense," Fenelon explained. "That's one of the factors that can contribute to heavy snowfall being concentrated in a relatively restricted area of a storm while lesser amounts accumulate in other places."

A snowfall map for Upper Michigan is available on the Marquette Web.

A concentrated band of snow also left locations in Knox and Baylor County, Texas, with heavier snowfalls totals than surrounding areas. Munday, Texas, in Knox County, recorded 14 inches of snow from Nov. 26 and Seymour, in Baylor County, recorded 11 inches.

Snow extending from southwest Oklahoma through Oklahoma City dropped anywhere from 2-8 inches. Chickasha and Shawnee, Okla., reported 8 inches of snow while areas around Norman and Duncan reported 7 inches. Oklahoma City reported 3.7 inches of snow

The snowfall map compiled by the Norman Weather Service office may be seen on the Web.

Dallas dodged a bullet, receiving only light amounts of freezing precipitation, though that was enough to force closure of the Dallas North Tollway for a time Wednesday night as vehicles spun off the roadway. Heavy ice coated trees and power lines north of the city in Collin and Grayson counties. American Airlines canceled 50 flights Wednesday at Dallas/Fort Worth International Airport. There were no road closings in the area, but transportation officials urged caution on ice-coated overpasses and bridges. Ice accumulation did force officials to close Interstate 35 for a few hours early Thursday morning in Waco, Texas.

Any persistent freezing rain or sleet in the Dallas area was expected to end Thursday morning with temperatures rising to the lower 40s by Thursday afternoon. Friday's high temperature was forecast to be in the lower 60s.

Freezing rain, drizzle and mist contributed to icy conditions through much of southeast Kansas, southwest and south-central Missouri Wednesday night. Cold temperatures and falling moisture made bridges and overpasses especially treacherous for motorists. The cold, icy conditions persisted into Thursday morning but temperatures were forecast to warm into the 40s Thursday afternoon.

Forecasts showed the worst of the wintery conditions to be over by Thursday afternoon. Warmer temperatures were expected to prevent freezing precipitation as the storm system moved to the east. Precipitation forecast to spread into the Chicago area Friday and Saturday is expected to remain liquid with highs in the mid-40s and lows in the mid-to-upper 30s.

Relevant Web Sites
NOAA's Storm Watch — Get the latest severe weather information across the USA

NOAA's Weather Page

NOAA Weather Radio

U.S. Snow Monitoring—Recent Snowfall & Snow Depth Maps

NOAA's New Wind Chill Chart

NOAA's Winter Weather Awareness

NOAA's Meteorological Calculator

Meteorological Tables

Media Contact:
Patrick Slattery, NOAA's National Weather Service Central Region, (816) 426-7621, ext. 621