The fall (September, October, November) MOS equation for predicting maximum temperature (in 0 F) at Binghamton, New York, formerly used with a now-discontinued dynamical model, at the 60-hour lead...

The fall (September, October, November) MOS equation for predicting maximum temperature (in
⁰F) at Binghamton, New York, formerly used with a now-discontinued dynamical model, at the 60-hour lead time was

MAX T = –363.2 + 1.541 (850 mb T) – .1332 (SFC-490 mb RH) – 10.3 (COS DOY) where:

(850 mb T) is the 48-hour dynamical forecast of temperature (K) at 850 mb

(SFC-490 mb RH) is the 48-hour forecast lower tropospheric RH in %

(COS DOY) is the cosine of the day of the year transformed to radians or degrees; that is, =cos (2pt/365) or = cos (360⁰t / 365) and t is the day number of the valid time (the day number for January 1 is 1, and for October 31 it is 304)

Calculate what the 60-hour MOS maximum temperature forecast would be for the following:

Valid time 48-hr 850 mb T fcst 48-hr mean RH fcst

a. September 4 278 K 30%

b. November 28 278 K 30%

c. November 28 258 K 30%

d. November 28 278 K 90%