![]() ![]() Estimated precipitation: 0.07 in (1.875 mm). Please acknowledge the NWS as the source of any news information accessed from this site.Low around 62☏ (17☌), high around 78☏ (26☌).Ĭhance of light rain between 5 am and 8 am, between 11 am and 2 pm and after 5 pm. Media use of NWS Web News Stories is encouraged! CLAIR SHORES 42.49N 82.89Wġ115 PM HEAVY SNOW 2 SSE BIRCH RUN 43.22N 83.77Wġ7 HOUR TOTAL SNOWFALL AT FLINT BISHOP AIRPORT.ġ2 HOUR TOTAL SNOWFALL AT TRI CITIES AIRPORT.ġ5 HOUR TOTAL SNOWFALL AT DETROIT METRO AIRPORT.ġ200 AM SNOW 2 NW COLUMBIAVILLE 43.18N 83.44WĠ100 AM SNOW 4 SE OTISVILLE 43.12N 83.47WĠ100 AM SNOW SHELBY TOWNSHIP 42.67N 83.03WĠ100 AM SNOW 4 E WHITE LAKE 42.65N 83.43Wġ8 HOUR SNOWFALL TOTAL AT THE NWS WHITE LAKE OFFICE.Ġ550 AM SNOW 4 W WEST BLOOMFIELD 42.57N 83.46WĠ700 AM SNOW 2 S ORTONVILLE 42.82N 83.44WĠ700 AM SNOW 3 S BLOOMFIELD HILLS 42.54N 83.25W NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI The National Weather Service Detroit/Pontiac in White Lake, MI can be found on social media at and at īelow are preliminary storm total snowfall reports from the event. The Radar Operations Center in Norman, Oklahoma, provides lifecycle management and support for all WSR-88Ds. The KDTX WSR-88D is part of a network of 159 operational radars. The Service Life Extension Program will be complete in 2023. The fourth project will be the refurbishment of the equipment shelters. The first project was the installation of the new signal processor and the second project was the refurbishment of the transmitter. NOAA’s National Weather Service, the United States Air Force, and the Federal Aviation Administration are investing $135 million in the eight year program. The pedestal refurbishment is the third major project of the NEXRAD Service Life Extension Program, a series of upgrades that will keep our nation’s radars viable into the 2030s. This activity is necessary to keep the radar functioning for another 20 years or more. The radar and pedestal were designed to last 25 years, and this radar has exceeded its life-span. Both the pedestal and dome have been removed and replaced sucessfully. The components are extremely heavy and required the radome be removed by crane. Technicians replaced the antenna pedestal, one of the most critical components of the radar, which is necessary for antenna rotation and positioning to capture data in all directions. The KDTX WSR-88D Doppler weather radar, operated by NOAA’s National Weather Service Detroit/Pontiac in White Lake, Michigan was down for a two-week period for an important upgrade. Radar imagery for KDTX is unavailable for this event, due to the radar undergoing extended maintenance for the Service Life Extension Program (SLEP). Observations here at the NWS office in White Lake also suggested a lack of good dendrites through much of the event, which also contributed greatly to lower snowfall totals. Even when the rain did transition to snow, lingering boundary layer warmth contributed to a lot of melting/compaction through much of the day. This delayed the transition from rain to snow by several hours. The Tues evening DTX sounding suggested the warm layer was deeper and more pronounced than many model solutions suggested. This kept the eastern portions of the area, from Adrian up through metro Detroit and Port Huron warmer today. The stronger sfc reflection in the Ohio Valley also helped slow the sfc cold front across Se Mi. Reports from this region are suggestive of snow totals in the 10 to 12 inch range, with some locally higher amounts certainly possible. This region was also colder and transitioned to snow earlier, so liquid snow ratios were higher. Larger flake size may have also contributed to this. So the axis of heaviest snow set up from SW Lower Mi into the Lansing/Owosso/Flint/Saginaw/Caro regions and held through the entire day. Once these elevated frontal circulations develop, they often become rather persistent. This likely contributed to the better system relative isentropic ascent setting up farther north and west this morning. The upper jet forcing was perhaps a little farther north than earlier model solutions suggested and the surface wave across the Ohio Valley was a bit stronger. These types of systems can lead to a tremendous variability in snowfall amounts across a relatively short distance, which occurred in this event. ![]() There was a rather robust upper jet response today which triggered deep layer frontal ascent across the baroclinic zone across Se Mi. That was not the case as the composites simply had no returns over much of Se Mi due to the radar outage. With the extended outage of the KDTX radar, many radar composites today have given the impression that the returns were weakening as they entered Se Mi. The 12Z Wed DTX sounding had a precipitable water value of 0.67 inches, quite high for early February and had a deep layer of saturation.
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