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 1999
	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	65	42	54	-3	11	0				W	16.1	44	SW	47	394	8	KFR 0400
2	59	43	51	-6	14	0	T			SW	11.8	32	SSW	57	253	10
3	64	39	52	-6	13	0	0.02			W	9.2	34	WSW	59	298	8	KFR 0700
4	60	32	46	-12	19	0				NW	10.8	31	WSW	45	515	4
5	64	36	50	-8	15	0				W	6.8	17	S	37	631	1
6	73	37	55	-4	10	0	0.18			NW	10.6	41	W	49	485	7	DL,KFR 1800
7	59	39	49	-10	16	0				SW	13.4	38	SSW	47	562	2
8	56	30	43	-16	22	0				W	8.8	33	W	48	451	2
9	60	34	47	-13	18	0				W	10.6	31	SW	41	521	2
10	64	35	50	-10	15	0				W	5.9	16	SSE	38	596	4
11	66	35	50	-10	15	0	0.01			SE	6.3	32	SW	54	451	6	KFR 1500
12	68	45	56	-4	9	0				W	16.2	38	NW	42	640	2
13	64	41	52	-8	13	0				W	9.3	25	NW	37	460	7
14	64	35	50	-11	15	0				W	7.2	27	NW	42	469	5
15	67	40	54	-7	11	0				W	8.9	24	W	45	511	5
16	71	38	54	-7	11	0				NW	8.0	26	WSW	51	539	7
17	67	43	55	-7	10	0	0.13			S	7.6	25	SSW	69	287	9
18	73	50	62	0	3	0				W	13.3	31	SSW	47	553	6
19	70	39	54	-8	11	0				NE	5.9	27	E	39	608	6
20	74	48	61	-1	4	0				SE	9.1	34	NW	40	555	8
21	77	47	62	-1	3	0				NW	12.4	32	NW	36	662	3
22	82	51	66	+3	0	1				NE	6.9	17	NNE	33	683	0
23	92	55	74	+11	0	9				NW	8.3	22	N	32	677	0
24	97	62	80	+17	0	15				NW	10.3	34	NW	30	673	0
25	80	52	66	+3	0	1				NW	19.9	45	WNW	32	691	2
26	78	39	58	-6	7	0				W	6.4	19	NE	24	702	2
27	89	44	66	+2	0	1				NW	8.4	31	NW	26	686	5
28	82	58	70	+6	0	5				NW	12.3	33	NW	29	643	5
29	81	56	68	+4	0	3				NW	12.6	36	NW	28	700	0
30	81	56	68	+3	0	3				NW	14.0	32	WNW	25	692	0
31	80	59	70	+5	0	5				W	14.8	40	NW	42	356	9
SUM					265	43	0.34	0
AVG	71.8	43.9	57.9								10.4					4.2

NOTES:				PRECIPITATION (IN.)				MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST				TOTAL FOR THE MONTH			0.34	A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace				DEPARTURE FROM NORM			-0.17	D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation				24HR MAX	0.18	ON	6	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	5	>= 0.25	0	BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH			57.9	>= 0.01	4	>= 0.50	0	AVERAGE STATION			29.187
DEPARTURE FROM NORMAL			-3.4	>= 0.10	2	>= 1.00	0	MAX SEA-LEVEL	30.29	ON	22
HIGHEST	97	ON	24	SNOW (FROZEN PRECIP.) (IN.)				MIN SEA-LEVEL	29.38	ON	3
LOWEST	30	ON	8	TOTAL FOR THE MONTH			0	SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH:				24HR MAX	na	ON	na	AVERAGE DAILY TOTAL			546.6
MAXIMUM 32 OR BELOW			0	MAX ON GRND	na	ON	na	MAX DAILY	702	ON	26
MAXIMUM 90 OR ABOVE			2	WIND (50-FT LEVEL)				MIN DAILY	253	ON	2
MINIMUM 32 OR BELOW			2	AVERAGE SPEED (MPH)			10.4	MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW			0	DEPARTURE FROM NORM			+1.3	CLEAR	13	FOG	0
HEATING DEGREE DAYS (BASE 65ºF)				PEAK GUST	WNW @ 45	ON	25	PARTLY CLOUDY	12	THDR	0
TOTAL FOR THE MONTH			265	AVERAGE PSYCHROMETRIC DATA				CLOUDY	6	DUST	0
DEPARTURE FROM NORMAL			+101	DRY BULB (ºF)	58.7	WET BULB (ºF)	46.6	RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)			4740	REL. HUM. (%)	41.0	DEW PT.(ºF)	33.2	HIGHEST	96	ON	17
SEASON DEPARTURE FROM NORM			-459	+ DENOTES LATEST OF MULTIPLE DAYS				LOWEST	17	ON	29+