Festus

Watch hoisted for the whole forum. More than 48 hours in advance - might be a new record for CTP. Heavy mixed precipitation possible. Total snow and sleet accumulations up to two inches and ice accumulations between one tenth and three tenths of an inch possible.

Per Millersville archive, we received 3.5" on December 26, 1947. Geez, getting fringed even way back then.

5"+ for Lanco. Definitions, Thresholds, Criteria for Warnings, Watches and Advisories

As I'm fond of noting, today is the earliest sunset. It's another month or so for the latest sunrise. The discrepancy is the difference between true solar time and the chronological time we use.

Flurries at the moment. Temp 32.4. The only thing caved so far is expectations.

When was the last time it snowed in Central Pennsylvania on Thanksgiving? To find the last measurable snowfall, we have to go back over 35 years. According to the National Weather Service out of State College, the last measurable snow in the Harrisburg region occurred on Thanksgiving 1989 when 1.2 inches of snow fell. The maximum snowfall the Harrisburg area received on Thanksgiving in the last 50 years occurred in 1971. That was when 2.8 inches fell on Thanksgiving. That same year also set a record with the most snow on the ground during Thanksgiving, which was six inches.

The Chinook is absolutely correct. The write up is as follows: "A downslope chinook wind event pushed the temperature at the town of Loma from -54°F at 9 am on January 14, 1972, to 49°F by 8 am on January 15th. The 103°F (57.2°C) rise is the greatest change in temperature ever officially measured on earth within a 24-hour period." Can you imagine? According to AI , the Lancaster daily range record is 57 degrees set on December 23, 2022.

While a 92 degree difference is impressive, the national (and world) record for 24 hour temperature change IN ONE LOCATION is 103 degrees in Loma, Montana. Temp went from -54 to 49 on January 14/15 1972.

4.99" yesterday + 0.21" since midnight = 5.20" for East Petersburg. Holy f-bomb Batman.

3.87" so far today. Upstream (literally, lol) radar continues to fill in so maybe shot at 5". Absolutely unreal. So what's the mechanism for this mesoscale training over such a relatively small area?

From the station about 100 yards away...

Holy moly - Just under 2" in the last 1.5 hours and still raining hard. Local roads passable (at least where I am) but need to drive down the middle. Didn't see this coming.

Another Millersville record low max temperature set yesterday. High was 56 breaking the old record of 57. That's two record low max temps set 6 days apart from two different systems with data going back over 100 years. Remarkable.

Millersville high yesterday was 56 breaking the low max temperature record by 4 degrees.

Just missed the Millersville record low maximum temperature yesterday. Record was 56, was 57 just after midnight. Today's record low max is a relatively balmy 60. Should have no problem breaking that one, unfortunately.