Forecast Discussion 12/24/20 AM: Flood Watch in effect for the Twin Tiers

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AVERAGE HIGH FOR DECEMBER 24th: 35°

AVERAGE LOW FOR DECEMBER 24th: 18°

THURSDAY SUNRISE: 7:35 AM

THURSDAY SUNSET: 4:41 PM

*Areal Flood Watch in effect for the Twin Tiers Thursday afternoon until noon Christmas Day.*

*Flood Warning issued for portions of the Twin Tiers along the Susquehanna River.*

Noon Update: Steady rain has now moved into the Twin Tiers. Rain intensity will continue to pick up this afternoon with steady moderate to heavy rain continuing into the overnight hours. The National Weather Service has issued Flood Warnings for portions of the Twin Tiers along the Susquehanna River. This includes portions of Bradford & Tioga (N.Y.) counties. Flood is expected to occur across the area in the next twenty-four hours due to the heavy rain and snowmelt. We will continue to flooding threat and update you with the latest when it becomes available!

Thanks to a strong southerly breeze our temperatures rose into the 40s overnight. The majority of the area is starting off cloudy and quiet, that will be changing. Winds will continue to be on the strong side, sustained at 10-20 mph with gusts of 35 mph or higher possible. Light rain showers will bring to move in Thursday morning, then rain turns steady by midday. Rain will intensify throughout the afternoon, leading to steady moderate to heavy rain late afternoon and overnight. Rainfall amounts will range from 1.5-2.5″ with isolated higher amounts possible. The isolated higher amounts will be associated with heavy rain bands that set up. Portions of the Northern Tier will have the potential to see close to 3″ of rain. The heavy rain combined with the melting snow will lead to a flood threat across the Twin Tiers. An Areal Flood Watch goes into effect at noon Thursday and continues through noon Friday. The main concerns will be in urban, low-lying, and poor drainage areas. River flooding will also be possible as rivers are expected to rise. Highs for Thursday will be into the upper 40s to low 50s, which will support snowmelt.

As we head into the overnight hours, mild temperatures will continue supporting the continuation of steady rain. At this point, the cold front is looking to occur by the predawn hours on Christmas Day. Cold air will be ushered in behind this frontal passage leading to the transition from rain to snow showers; occuring from west to east. Minor snow accumulation will be possible with the greatest chance being into western portions of Steuben and Tioga (Pa.) counties, where 1-3 inches could occur; the remainder of the Twin Tiers could see a trace- 2″. The greatest concern behind this frontal passage will be the potential for a flash freeze. Temperatures are expected to rapidly fall below freezing leading to wet roads to freeze fast. This will impact your commute Thursday night and Friday morning with the untreated surfaces becoming icy. Highs Friday will be in the low 30s and lows into the low to mid-20s.

As we head into the upcoming weekend, at this vantage point, we will be seeing mainly dry conditions. A stray shower will be possible on Saturday thanks to lingering lake effect showers. We will also see a mix of sun and clouds along with seasonable temperatures. A chance for shower activity looks to return early next week.

THURSDAY: WINDY, STEADY RAIN ARRIVES, MODERATE TO HEAVY AT TIMES
HIGH: 52

THURSDAY NIGHT: BREEZY, STEADY RAIN TRANSITIONS TO SNOW SHOWERS
LOW: 31

FRIDAY: BREEZY, SCATTERED SNOW SHOWERS
HIGH: 33 LOW: 15

SATURDAY: STRAY SHOWER, BREAKS IN CLOUDS
HIGH: 30 LOW: 16

SUNDAY: MIX SUN & CLOUDS
HIGH: 35 LOW: 23

MONDAY: CLOUDY, CHANCE SHOWERS
HIGH: 39 LOW: 21

TUESDAY: MOSTLY CLOUDY, LINGERING SHOWERS
HIGH: 30 LOW: 14

WEDNESDAY: FILTERED SUNSHINE
HIGH: 33 LOW: 21

Chief Meteorologist Shelby Clark: Facebook I Twitter

Meteorologist Jessica Camuto: Facebook I Twitter

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Meteorologist Grant Chungo: Facebook I Twitter

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