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 1998
	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	93	59	76	+19	0	11				NW	8.7	28	SW	34	577	5
2	89	58	74	+17	0	9				NW	6.9	24	NW	41	484	8
3	85	54	70	+12	0	5				NW	6.1	20	NW	51	589	2
4	87	49	68	+10	0	3				N	5.6	15	WSW	53	607	2	DL
5	92	56	74	+16	0	9				NW	6.2	20	WNW	44	599	0
6	93	53	73	+14	0	8				NW	8.2	37	WNW	40	576	3
7	88	51	70	+11	0	5				NW	7.8	31	WNW	37	637	1
8	73	47	60	+1	5	0	T			W	8.7	30	SW	52	292	9
9	71	50	60	0	5	0	T			S	5.3	18	W	64	309	10
10	76	43	60	0	5	0				NW	5.6	18	SW	59	511	9
11	74	48	61	+1	4	0				W	6.4	24	E	59	428	8
12	82	50	66	+6	0	1	T			NW	8.5	35	S	58	489	9
13	74	45	60	0	5	0	T			NW	9.2	30	WNW	62	417	8
14	66	46	56	-5	9	0	0.03			SW	11.9	39	SW	53	308	9
15	68	39	54	-7	11	0				W	9.3	29	SSW	47	551	7
16	67	40	54	-7	11	0	T			NW	9.8	27	ENE	52	282	9
17	62	50	56	-6	9	0	0.23			W	10.6	29	WNW	68	156	10
18	71	43	57	-5	8	0				SW	6.8	19	SSW	50	663	4
19	78	49	64	+2	1	0				NE	8.2	20	NNE	46	589	6
20	74	50	62	0	3	0	T			NW	9.9	36	SSW	54	299	9
21	78	41	60	-3	5	0				NW	11.7	55	WNW	59	541	8	F
22	82	53	68	+5	0	3				NW	10.7	27	W	37	619	5
23	77	48	62	-1	3	0				E	8.1	25	E	50	586	6
24	77	56	66	+3	0	1	0.14			SE	6.7	27	S	64	338	10
25	61	47	54	-9	11	0	0.02			W	8.4	28	WSW	63	249	10	KFR 0100
26	60	47	54	-10	11	0	0.02			NW	5.5	18	W	61	193	10
27	64	44	54	-10	11	0	0.04			W	5.7	22	S	65	263	10
28	77	40	58	-6	7	0				NE	9.4	24	NE	47	683	2
29	68	55	62	-2	3	0	0.02			NW	10.5	26	SSW	58	202	10
30	73	51	62	-3	3	0	0.02			NW	5.0	12	NNW	73	317	10
31	82	46	64	-1	1	0				SW	7.5	24	SSW	51	684	2
SUM					131	55	0.52	0
AVG	76.2	48.6	62.4								8.0					6.7

NOTES:				PRECIPITATION (IN.)				MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST				TOTAL FOR THE MONTH			0.52	A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace				DEPARTURE FROM NORM			+0.01	D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation				24HR MAX	0.23	ON	17	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	14	>= 0.25	0	BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH			62.4	>= 0.01	8	>= 0.50	0	AVERAGE STATION			29.051
DEPARTURE FROM NORMAL			+1.1	>= 0.10	2	>= 1.00	0	MAX SEA-LEVEL	30.20	ON	31
HIGHEST	93	ON	6+	SNOW (FROZEN PRECIP.) (IN.)				MIN SEA-LEVEL	29.41	ON	12
LOWEST	39	ON	15	TOTAL FOR THE MONTH			0	SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH:				24HR MAX	na	ON	na	AVERAGE DAILY TOTAL			452.9
MAXIMUM 32 OR BELOW			0	MAX ON GRND	na	ON	na	MAX DAILY	684	ON	31
MAXIMUM 90 OR ABOVE			3	WIND (50-FT LEVEL)				MIN DAILY	156	ON	17
MINIMUM 32 OR BELOW			0	AVERAGE SPEED (MPH)			8.0	MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW			0	DEPARTURE FROM NORM			-1.1	CLEAR	7	FOG	1
HEATING DEGREE DAYS (BASE 65ºF)				PEAK GUST	WNW @ 55	ON	21	PARTLY CLOUDY	6	THDR	0
TOTAL FOR THE MONTH			131	AVERAGE PSYCHROMETRIC DATA				CLOUDY	18	DUST	0
DEPARTURE FROM NORMAL			-33	DRY BULB (ºF)	62.9	WET BULB (ºF)	52.6	RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)			4528	REL. HUM. (%)	53.2	DEW PT.(ºF)	43.9	HIGHEST	98	ON	13
SEASON DEPARTURE FROM NORM			-671	+ DENOTES LATEST OF MULTIPLE DAYS				LOWEST	14	ON	1