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 1997
	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	66	40	53	-4	12	0				W	8.8	21	NW	35	479	5
2	68	30	49	-8	16	0				NE	5.1	16	WNW	43	472	8
3	64	50	57	-1	8	0	T			SW	11.7	30	SW	38	149	10	KFR 1300
4	72	46	59	+1	6	0				SW	8.6	25	SW	34	572	2
5	78	45	62	+4	3	0				SW	7.9	30	WSW	42	443	10
6	72	47	60	+1	5	0				W	10.6	32	W	45	524	4
7	70	42	56	-3	9	0				NE	6.3	20	NNE	41	607	2
8	78	42	60	+1	5	0				NW	6.2	14	N	36	595	2
9	86	51	68	+8	0	3				NW	7.1	23	WNW	33	532	7
10	84	55	70	+10	0	5				NW	8.8	21	NW	30	613	0
11	88	55	72	+12	0	7				NE	8.1	17	NE	24	611	9
12	94	50	72	+12	0	7				E	6.6	27	WNW	29	585	3
13	94	66	80	+20	0	15				W	8.9	23	WSW	28	587	5
14	93	57	75	+14	0	10				NW	6.0	33	NW	34	466	7	DL
15	91	67	79	+18	0	14				NW	9.4	28	NW	36	553	5
16	91	59	75	+14	0	10				NW	11.0	35	WNW	36	598	2
17	83	56	70	+8	0	5				NW	13.4	31	NNW	31	631	0
18	78	48	63	+1	2	0				N	8.0	23	N	28	652	0
19	89	44	66	+4	0	1				W	10.2	31	WNW	28	612	3
20	73	51	62	0	3	0				W	12.5	31	W	30	598	2
21	76	43	60	-3	5	0				W	6.3	26	SSW	38	614	2
22	77	43	60	-3	5	0				W	8.0	25	WSW	33	519	6
23	72	52	62	-1	3	0	0.02			W	7.5	24	W	53	320	9
24	75	51	63	0	2	0	0.02			NW	9.5	31	WNW	43	484	6
25	64	52	58	-5	7	0	0.06			NW	10.4	29	NW	64	118	10
26	71	52	62	-2	3	0	T			E	4.8	12	ENE	70	306	10
27	78	51	64	0	1	0				N	4.7	14	ESE	62	387	9
28	79	59	69	+5	0	4	0.01			NW	5.1	19	WSW	61	328	10
29	86	59	72	+8	0	7				SW	6.4	20	W	59	463	9
30	85	60	72	+7	0	7	T			NW	5.2	16	ENE	54	415	10	T, DL
31	76	57	66	+1	0	1	0.22			NW	9.7	36	SW	72	278	9	DL, T
SUM					95	96	0.33	0
AVG	79.1	51.0	65.0								8.2					5.7

NOTES:				PRECIPITATION (IN.)				MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST				TOTAL FOR THE MONTH			0.33	A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace				DEPARTURE FROM NORM			-0.18	D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation				24HR MAX	0.22	ON	31	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	8	>= 0.25	0	BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH			65.0	>= 0.01	5	>= 0.50	0	AVERAGE STATION			29.177
DEPARTURE FROM NORMAL			+3.7	>= 0.10	1	>= 1.00	0	MAX SEA-LEVEL	30.31	ON	7
HIGHEST	94	ON	13+	SNOW (FROZEN PRECIP.) (IN.)				MIN SEA-LEVEL	29.57	ON	19
LOWEST	30	ON	2	TOTAL FOR THE MONTH			0	SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH:				24HR MAX	na	ON	na	AVERAGE DAILY TOTAL			487.5
MAXIMUM 32 OR BELOW			0	MAX ON GRND	na	ON	na	MAX DAILY	652	ON	18
MAXIMUM 90 OR ABOVE			5	WIND (50-FT LEVEL)				MIN DAILY	118	ON	25
MINIMUM 32 OR BELOW			1	AVERAGE SPEED (MPH)			8.2	MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW			0	DEPARTURE FROM NORM			-0.9	CLEAR	11	FOG	0
HEATING DEGREE DAYS (BASE 65ºF)				PEAK GUST	SW @ 36	ON	31	PARTLY CLOUDY	8	THDR	2
TOTAL FOR THE MONTH			95	AVERAGE PSYCHROMETRIC DATA				CLOUDY	12	DUST	0
DEPARTURE FROM NORMAL			-69	DRY BULB (ºF)	65.9	WET BULB (ºF)	52.3	RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)			5089	REL. HUM. (%)	41.5	DEW PT.(ºF)	39.3	HIGHEST	96	ON	31
SEASON DEPARTURE FROM NORM			-110	+ DENOTES LATEST OF MULTIPLE DAYS				LOWEST	12	ON	19