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: April 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	61	41	51	+1	14	0				NW	5.5	12	NW	70	332	8
2	60	34	47	-3	18	0				SE	5.2	14	ESE	72	241	9
3	55	39	47	-3	18	0	0.03			NW	7.1	17	WNW	81	151	10
4	64	33	48	-3	17	0				NW	6.3	26	WNW	71	397	4	F
5	65	38	52	+1	13	0				W	7.0	24	NW	50	348	9
6	66	33	50	-1	15	0				SW	6.3	17	WNW	51	454	7
7	62	36	49	-3	16	0				NW	9.7	25	WNW	47	341	8
8	61	31	46	-6	19	0				E	6.2	22	W	45	484	7
9	66	40	53	+1	12	0	T			S	5.0	22	S	51	443	8
10	66	45	56	+4	9	0	0.02			SW	7.6	35	SW	62	370	7	T
11	61	37	49	-3	16	0				W	10.0	33	SSW	53	387	6
12	60	29	44	-8	21	0				SW	7.3	29	S	46	481	2
13	56	32	44	-8	21	0				NW	5.6	15	NW	53	259	10
14	63	39	51	-1	14	0	T			NW	7.0	25	E	52	447	9	T, DL
15	70	42	56	+4	9	0				NW	13.9	32	WNW	34	533	4
16	63	44	54	+2	11	0				W	12.6	33	NW	37	404	10
17	68	36	52	0	13	0				W	5.9	18	WNW	42	556	1
18	67	36	52	0	13	0				E	6.5	32	WNW	50	328	10
19	68	43	56	+4	9	0				NW	8.5	29	W	36	557	0
20	75	36	56	+3	9	0				NW	5.3	16	NNW	45	568	4
21	81	42	62	+9	3	0				W	5.0	13	ENE	44	559	4
22	80	55	68	+14	0	3				NW	6.9	18	WNW	46	406	10
23	78	50	64	+10	1	0	0.02			W	11.2	35	SW	57	293	8	T, DL
24	66	43	54	0	11	0				W	15.5	37	W	40	606	2
25	67	38	52	-3	13	0				W	10.5	28	NW	40	578	3
26	71	41	56	+1	9	0				E	5.9	20	W	44	564	0
27	78	42	60	+5	5	0				N	4.5	13	NE	46	563	1
28	83	42	62	+6	3	0				E	4.7	14	E	44	569	2
29	87	47	67	+11	0	2				E	5.2	14	E	41	564	0
30	92	60	76	+19	0	11				NW	8.8	20	NNE	34	567	0
SUM					332	16	0.07	0
AVG	68.7	40.1	54.4								7.6					5.4

NOTES:				PRECIPITATION (IN.)				MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST				TOTAL FOR THE MONTH			0.07	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	0.03	ON	3	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			54.4	>= 0.01	3	>= 0.50	0	AVERAGE STATION			29.177
DEPARTURE FROM NORMAL			+1.7	>= 0.10	0	>= 1.00	0	MAX SEA-LEVEL	30.35	ON	26
HIGHEST	92	ON	30	SNOW (FROZEN PRECIP.) (IN.)				MIN SEA-LEVEL	29.52	ON	23
LOWEST	29	ON	12	TOTAL FOR THE MONTH			0	SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH:				24HR MAX	na	ON	na	AVERAGE DAILY TOTAL			445.0
MAXIMUM 32 OR BELOW			0	MAX ON GRND	na	ON	na	MAX DAILY	606	ON	24
MAXIMUM 90 OR ABOVE			1	WIND (50-FT LEVEL)				MIN DAILY	151	ON	3
MINIMUM 32 OR BELOW			3	AVERAGE SPEED (MPH)			7.6	MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW			0	DEPARTURE FROM NORM			-1.4	CLEAR	10	FOG	1
HEATING DEGREE DAYS (BASE 65ºF)				PEAK GUST	W @ 37	ON	24	PARTLY CLOUDY	8	THDR	3
TOTAL FOR THE MONTH			332	AVERAGE PSYCHROMETRIC DATA				CLOUDY	12	DUST	0
DEPARTURE FROM NORMAL			-40	DRY BULB (ºF)	54.7	WET BULB (ºF)	45.0	RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)			4397	REL. HUM. (%)	49.4	DEW PT.(ºF)	34.1	HIGHEST	100	ON	4
SEASON DEPARTURE FROM NORM			-638	+ DENOTES LATEST OF MULTIPLE DAYS				LOWEST	14	ON	15