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: May 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	85	44	64	+6	1	0				SE	4.4	17	NW	38	545	3
2	84	59	72	+14	0	7				W	10.0	27	WNW	39	553	4
3	84	50	67	+8	0	2				W	7.9	26	SW	35	553	3
4	76	50	63	+4	2	0				W	12.5	36	WSW	42	572	3
5	71	48	60	+1	5	0				SW	10.1	30	WSW	39	512	6
6	70	43	56	-3	9	0				W	4.2	15	W	40	365	9
7	81	44	62	+2	3	0	0.14			W	9.3	29	NW	45	541	7	DL
8	74	48	61	+1	4	0	0.02			SW	11.3	34	WSW	58	539	5
9	73	44	58	-2	7	0				SW	8.4	29	SW	40	628	1
10	66	51	58	-3	7	0				NW	12.9	41	WNW	42	259	9
11	67	49	58	-3	7	0	0.30			NW	11.2	36	NW	65	206	10
12	65	43	54	-7	11	0	T			NW	5.0	16	NW	64	402	4
13	72	38	55	-6	10	0				SE	5.0	24	E	56	548	5
14	76	51	64	+2	1	0				S	5.6	20	S	47	618	1
15	70	45	58	-4	7	0	0.06			SW	4.8	23	NW	70	202	10
16	67	51	59	-3	6	0				W	7.7	24	WNW	60	265	10
17	68	50	59	-3	6	0				NW	7.9	24	NNW	68	272	8	T
18	80	53	66	+4	0	1				NW	8.6	30	W	48	386	9
19	79	58	68	+6	0	3				SE	7.4	26	ESE	46	596	6	DL
20	79	55	67	+5	0	2	0.02			SE	5.3	27	NNW	64	445	7	T, DL
21	80	51	66	+3	0	1				W	10.5	40	WNW	54	488	5	T, DL
22	71	50	60	-3	5	0	0.25			W	9.0	28	WNW	63	438	5	T, DL, KFR 1700
23	68	50	59	-5	6	0	0.10			NW	7.5	20	NNE	70	434	9	DL
24	74	46	60	-4	5	0	T			W	5.6	20	ENE	56	469	8
25	80	46	63	-1	2	0	T			SW	7.9	33	SSW	45	543	6
26	75	58	66	+2	0	1	T			NW	7.4	23	NW	57	194	10
27	73	55	64	-1	1	0				W	9.2	30	SSW	50	336	10	KFR 2030
28	69	45	57	-8	8	0				W	12.0	32	WSW	47	508	6	T
29	70	44	57	-8	8	0				W	11.2	32	NW	46	320	7
30	77	52	64	-1	1	0				W	13.7	40	WSW	48	590	5
31	74	45	60	-6	5	0				W	8.2	30	NW	41	574	8
SUM					127	17	0.89	0
AVG	74.1	48.9	61.5								8.4					6.4

NOTES:				PRECIPITATION (IN.)				MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST				TOTAL FOR THE MONTH			0.89	A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace				DEPARTURE FROM NORM			+0.34	D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation				24HR MAX	0.35	ON	22-23	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	2	BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH			61.5	>= 0.01	7	>= 0.50	0	AVERAGE STATION			29.127
DEPARTURE FROM NORMAL			-0.3	>= 0.10	4	>= 1.00	0	MAX SEA-LEVEL	30.16	ON	1
HIGHEST	85	ON	1	SNOW (FROZEN PRECIP.) (IN.)				MIN SEA-LEVEL	29.64	ON	27+
LOWEST	38	ON	13	TOTAL FOR THE MONTH			0	SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH:				24HR MAX	na	ON	na	AVERAGE DAILY TOTAL			448.4
MAXIMUM 32 OR BELOW			0	MAX ON GRND	na	ON	na	MAX DAILY	628	ON	9
MAXIMUM 90 OR ABOVE			0	WIND (50-FT LEVEL)				MIN DAILY	194	ON	26
MINIMUM 32 OR BELOW			0	AVERAGE SPEED (MPH)			8.4	MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW			0	DEPARTURE FROM NORM			-0.5	CLEAR	5	FOG	0
HEATING DEGREE DAYS (BASE 65ºF)				PEAK GUST	WNW @ 41	ON	10	PARTLY CLOUDY	14	THDR	5
TOTAL FOR THE MONTH			127	AVERAGE PSYCHROMETRIC DATA				CLOUDY	12	DUST	0
DEPARTURE FROM NORMAL			-29	DRY BULB (ºF)	61.2	WET BULB (ºF)	50.9	RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)			4957	REL. HUM. (%)	51.1	DEW PT.(ºF)	41.3	HIGHEST	97	ON	22+
SEASON DEPARTURE FROM NORM			-170	+ DENOTES LATEST OF MULTIPLE DAYS				LOWEST	17	ON	9