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 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	60	35	48	-2	17	0				NW	12.3	29	WNW	39	441	4
2	62	29	46	-4	19	0				SW	6.7	24	SW	40	443	5
3	64	32	48	-2	17	0				NW	14.7	52	NNW	45	484	2	BD,KFR 1200
4	56	34	45	-6	20	0				NW	10.2	26	NNE	38	341	7
5	58	26	42	-9	23	0				NE	7.8	24	NE	41	492	0
6	63	25	44	-7	21	0				W	5.0	19	NE	42	480	2
7	68	38	53	+1	12	0				W	8.5	28	WNW	34	496	0
8	63	45	54	+2	11	0				W	8.7	27	WNW	42	304	7
9	66	42	54	+2	11	0	T			NW	11.1	28	WNW	40	391	4
10	56	31	44	-8	21	0				N	10.4	27	N	37	499	4
11	56	30	43	-9	22	0				NE	7.6	24	NE	33	525	0
12	64	26	45	-7	20	0				E	5.2	15	ESE	35	483	3
13	61	46	54	+2	11	0				SW	12.3	32	SSW	41	124	10
14	63	42	52	0	13	0	T			W	6.2	20	E	53	265	10
15	73	40	56	+4	9	0				E	5.1	18	E	55	422	9
16	73	48	60	+8	5	0	T			SW	10.7	45	WSW	48	291	9	DL,KFR 1105
17	68	42	55	+3	10	0				W	8.2	33	SSW	41	443	7
18	64	43	54	+2	11	0	T			NW	7.3	16	NW	42	236	9
19	68	46	57	+5	8	0	T			SE	8.4	30	SSW	69	203	10
20	66	42	54	+1	11	0	0.06			W	20.8	54	WSW	46	571	0	KFR 0245
21	64	36	50	-3	15	0				W	5.5	19	WNW	46	438	6
22	68	41	54	0	11	0	0.25			W	5.8	17	W	54	396	9
23	65	48	56	+2	9	0	0.01			NW	11.1	37	WSW	57	358	10	KFR 0130
24	64	43	54	0	11	0	T			NW	8.1	24	NW	59	368	6
25	70	43	56	+1	9	0				SE	4.1	16	SE	62	416	10
26	75	50	62	+7	3	0				NW	6.8	35	WNW	55	439	7
27	67	49	58	+3	7	0	T			NW	14.1	40	NW	41	466	3
28	62	40	51	-5	14	0				SW	5.4	19	WSW	47	292	10
29	68	41	54	-2	11	0				W	9.1	29	WSW	50	508	5
30	66	37	52	-5	13	0	0.01			SW	15.7	45	WSW	47	485	5	KFR 2100
SUM					395	0	0.33	0
AVG	64.7	39.0	51.8								9.1					5.8

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			-0.08	D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation				24HR MAX	0.26	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	1	BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH			51.8	>= 0.01	4	>= 0.50	0	AVERAGE STATION			29.225
DEPARTURE FROM NORMAL			-0.9	>= 0.10	1	>= 1.00	0	MAX SEA-LEVEL	30.55	ON	2
HIGHEST	75	ON	26	SNOW (FROZEN PRECIP.) (IN.)				MIN SEA-LEVEL	29.54	ON	20
LOWEST	25	ON	6	TOTAL FOR THE MONTH			0	SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH:				24HR MAX	na	ON	na	AVERAGE DAILY TOTAL			403.3
MAXIMUM 32 OR BELOW			0	MAX ON GRND	na	ON	na	MAX DAILY	571	ON	20
MAXIMUM 90 OR ABOVE			0	WIND (50-FT LEVEL)				MIN DAILY	124	ON	13
MINIMUM 32 OR BELOW			7	AVERAGE SPEED (MPH)			9.1	MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW			0	DEPARTURE FROM NORM			+0.1	CLEAR	8	FOG	0
HEATING DEGREE DAYS (BASE 65ºF)				PEAK GUST	WSW @ 54	ON	20	PARTLY CLOUDY	12	THDR	0
TOTAL FOR THE MONTH			395	AVERAGE PSYCHROMETRIC DATA				CLOUDY	10	DUST	0
DEPARTURE FROM NORMAL			+23	DRY BULB (ºF)	52.4	WET BULB (ºF)	43.0	RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)			4994	REL. HUM. (%)	46.0	DEW PT.(ºF)	30.6	HIGHEST	97	ON	22
SEASON DEPARTURE FROM NORM			-41	+ DENOTES LATEST OF MULTIPLE DAYS				LOWEST	16	ON	17+