CLIMATOLOGICAL DATA							HANFORD METEOROLOGY STATION 25 MILES N.W. OF RICHLAND, WA LATITUDE 46º 34'N, LONGITUDE 119º 36'W ELEVATION (GROUND) 733 FEET							MONTH: December 2004
	TEMPERATURE (ºF) (3-FT LEVEL)						PRECIPITATION			WIND (50-FT LEVEL)							FRONTS & MISC PHENOM
D A T E	M A X I M U M	M I N I M U M	A V E R A G E	D E P A R T U R E	H D D 65 ºF	C D D 65 ºF	T O T A L IN.	S N O W IN.	SNOW ON GRND AT 0400 IN.	P R E V A I L DIR	A V E SPD MPH	PK G U S T SPD MPH	PK G U S T DIR	A V E RH %	S O L A R A D	S K Y C V R SR TO SS	NOTE:TYPES AND TIMES OF FRONTAL PASSAGES "KFR"(COLD) "WFR"(WARM)
1	44	21	32	-4	33	0				NW	4.9	13	NW	81	140	3	F
2	30	24	27	-8	38	0	T			N	2.3	8	NNW	99	34	10	F, GL
3	31	28	30	-5	35	0	T			N	2.3	9	NNW	98	31	10	F, GL
4	36	26	31	-3	34	0				NW	3.6	12	WNW	92	38	10	F
5	48	24	36	+2	29	0				SW	6.3	22	WSW	73	121	6	F
6	44	31	38	+5	27	0	0.03	T		NW	5.3	16	WNW	79	107	6	F
7	45	31	38	+5	27	0	0.10	0.3		N	6.5	21	SSE	93	69	10	F, KFR 0220
8	55	36	46	+13	19	0	0.02			SW	12.9	40	SSE	67	125	4	KFR 0530
9	49	32	40	+7	25	0	0.02			NW	5.3	17	WSW	79	77	10
10	63	37	50	+17	15	0				S	11.9	34	SSW	75	59	10	WFR 0500
11	61	39	50	+17	15	0				NW	12.7	36	SSW	51	83	9	KFR 0430
12	42	32	37	+4	28	0				NW	8.6	21	NW	48	59	8
13	46	30	38	+5	27	0	0.01			W	3.7	9	WSW	64	116	6
14	49	28	38	+5	27	0	0.01			NW	5.1	13	W	82	83	7
15	49	27	38	+5	27	0				NW	5.3	16	NW	87	138	1
16	42	26	34	+2	31	0				W	4.3	13	NW	90	52	1O	F
17	43	36	40	+9	25	0				SE	3.2	9	NW	86	34	10	F
18	40	37	38	+7	27	0				E	2.8	8	E	90	23	10
19	46	33	40	+9	25	0				S	4.9	18	W	80	108	8	KFR 1630
20	50	27	38	+8	27	0				W	7.7	20	W	57	89	9
21	52	24	38	+8	27	0				NW	7.3	28	NW	61	139	0
22	48	23	36	+6	29	0				NW	3.3	10	S	76	140	1
23	38	19	28	-2	37	0				W	5.0	13	W	86	136	7
24	37	19	28	-2	37	0				SW	3.0	10	NW	88	96	9	F
25	34	26	30	0	35	0				SW	3.1	10	WNW	86	41	10
26	44	27	36	+6	29	0				W,NW	7.4	18	NW	80	71	9	KFR 0200
27	48	22	35	+5	30	0				W	5.0	17	WNW	82	140	0
28	31	17	24	-5	41	0				W	3.6	11	NW	94	29	10	F
29	34	29	32	+3	33	0	0.16	2.0	0.4	SE	2.3	6	SW	98	56	10	F
30	36	29	32	+3	33	0	0.02	0.2	1.1	NW	4.8	15	NW	97	59	10	F
31	38	30	34	+6	31	0	T	T	T	NW	4.7	14	WNW	94	49	10	F
SUM					903	0	0.37	2.5
AVG	43.6	28.1	35.9								5.5					7.5

NOTES:				PRECIPITATION (IN.)				MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST				TOTAL FOR THE MONTH			0.37	A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace				DEPARTURE FROM NORM			-0.74	D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation				24HR MAX	0.16	ON	29	F-Fog, IC-Ice Crystals, K-Smoke
Solrad in column 15 is in Langleys; g-cal/sq. cm				NUMBER OF DAYS WITH:				GL-Glaze, T-Thunderstorm, DS-Drifting Snow
TEMPERATURE (ºF) (3-FT LEVEL)				>= T	11	>= 0.25	0	BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH			35.9	>= 0.01	8	>= 0.50	0	AVERAGE STATION			29.290
DEPARTURE FROM NORMAL			+4.2	>= 0.10	2	>= 1.00	0	MAX SEA-LEVEL	30.65	ON	16
HIGHEST	63	ON	10	SNOW (FROZEN PRECIP.) (IN.)				MIN SEA-LEVEL	29.12	ON	8
LOWEST	17	ON	28	TOTAL FOR THE MONTH			2.5	SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH:				24HR MAX	2.0	ON	2.029	AVERAGE DAILY TOTAL			81.9
MAXIMUM 32 OR BELOW			3	MAX ON GRND	1.7	ON	29	MAX DAILY	140	ON	27+
MAXIMUM 90 OR ABOVE			0	WIND (50-FT LEVEL)				MIN DAILY	23	ON	18
MINIMUM 32 OR BELOW			25	AVERAGE SPEED (MPH)			5.5	MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW			0	DEPARTURE FROM NORM			-0.5	CLEAR	5	FOG	14
HEATING DEGREE DAYS (BASE 65ºF)				PEAK GUST	SSE @ 40	ON	8	PARTLY CLOUDY	6	THDR	0
TOTAL FOR THE MONTH			903	AVERAGE PSYCHROMETRIC DATA				CLOUDY	20	DUST	0
DEPARTURE FROM NORMAL			-129	DRY BULB (ºF)	35.8	WET BULB (ºF)	33.5	RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)			2057	REL. HUM. (%)	81.0	DEW PT.(ºF)	30.4	HIGHEST	100	ON	31+
SEASON DEPARTURE FROM NORM			-182	+ DENOTES LATEST OF MULTIPLE DAYS				LOWEST	35	ON	5