LEGEND 
COLD FRONT 
{ WARM FRONT 
“\—— +++ = STATIONARY FRONT 
+ UPPER AIR WARM FRONT 
— — — UPPER AIR COLD FRONT 
— + — + OCCLUDED FRONT 
| |SHADED AREA,— PRECIPITATION OCCURRING 
AT TIME OF OBSERVATION. 
-{SMALL FIGURES REPRESENT TEMPERATURE 
AND 24 HOUR PRECIPITATION, 
RESPECTIVELY. 
47:30 a.m.—Jan. 21,1937 
air-mass and front symbols) 
21 
