|from: Feb 26 2020 10:00 pm||until: 12:30 pm||Special Weather Statement level: Minor|
|Minimal threat to life or property - Responsive action SHOULD be taken soon (within next hour)|
|...PATCHY DENSE FOG ACROSS HIGHER TERRAIN... Patchy dense fog will continue through midday across the higher terrain of the western Southern Tier, Boston Hills, and Wyoming County. Visibility will be reduced to less than a half mile in some locations, mainly on the higher hilltops. Temperatures will also be at or just below freezing. Moisture from the fog may|
|from: Feb 27 2020 5:00 am||until: 3:00 pm||Lakeshore Flood Watch level: Moderate|
|Possible threat to life or property - Responsive action SHOULD be taken in the near future|
|...LAKESHORE FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH THURSDAY AFTERNOON... * WHAT...Lakeshore flooding possible. * WHERE...Erie and Chautauqua counties. * WHEN...From late tonight through Thursday afternoon. * IMPACTS...Strong west winds may result in a rise in water|
|from: Feb 26 2020 10:00 pm||until: Feb 29 2020 6:00 pm||Lake Effect Snow Warning level: Moderate|
|Possible threat to life or property - Responsive action SHOULD be taken soon (within next hour)|
|...LAKE EFFECT SNOW WARNING IN EFFECT FROM 10 PM THIS EVENING TO 6 PM EST SATURDAY... * WHAT...Long duration heavy lake effect snow expected. Total snow accumulations of 1 to 2 feet with locally higher amounts possible in the most persistent bands. Snowfall rates may reach 1 to 2 inches per hour at times. Winds could gust as high as 45 to 50 mph|
Precipitation, very unsettled
Forecast based on: Pressure: 1012.2 hPa - Trend: 2 (Falling) - max: 1046.4 - min: 990.9
Wind from: ENE (English)
Month: 2. Hemisphere: 1 (Northern).
|This program tries to get a "same result forecast" as when using the
1915 Negretti and Zambra (Zambretti) Forecaster.
The original paper forecaster was designed for the Northern Hemisphere and UK "Weather Range". ie. The nearer the Poles the greater the spread between lower and upper barometer levels and large "trends" are needed for weather conditions change.
Conversely, the nearer the Equator the smaller the "spread" and smaller "trends" for change.
On the left a picture of the original weather prediction disc.
A forecast at approx. 09:00 local Solar Time is allegedly better than 90% accurate ! - even though it takes no account of rate of barometer change, wind speed or temperature.
More information can be found here: drkfs.net