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 2009
	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	44	33	38	-12	27	0	T	T		SE	7.9	21	WSW	68.7	97.8	10	KFR 1145
2	61	32	46	-4	19	0	T			NW	10.7	33	WNW	64.5	295.8	6	DL
3	59	40	50	0	15	0				W	11.5	27	WNW	39.8	432.0	6
4	60	34	47	-4	18	0				NW	7.1	17	E	46.8	471.6	0
5	67	35	51	0	14	0				NW	6.9	14	NW	48.0	466.8	5
6	72	36	54	+3	11	0				W	6.3	16	ESE	41.6	487.2	3
7	76	35	56	+5	9	0				NW	6.1	13	NNE	42.8	465.6	6
8	71	46	58	+7	7	0				NW	14.0	30	NW	39.8	277.2	9
9	66	37	52	+1	13	0				SW	5.7	15	W	49.8	418.2	8
10	66	45	56	+4	9	0	T			NW	7.3	18	NW	53.4	439.2	6
11	66	44	55	+3	10	0				W	8.8	23	NW	47.2	419.4	7
12	63	39	51	-1	14	0	0.02			S	10.1	30	SSW	65.8	162.6	10	KFR 1930
13	59	36	48	-5	17	0				W	11.1	31	SW	52.6	393.6	4
14	54	33	44	-9	21	0	T			NW	10.2	27	WNW	61.9	415.8	7
15	64	38	51	-3	14	0				NW	10.3	29	WNW	42.9	479.4	1
16	68	36	52	-2	13	0				SE	6.6	18	SSE	41.7	519.6	2
17	68	34	51	-3	14	0	T			NW	8.3	33	NW	54.3	339.0	7
18	67	33	50	-4	15	0				SE	5.7	21	WSW	39.9	510.0	7
19	80	39	60	+6	5	0				W	5.4	14	E	41.0	460.2	7
20	84	45	64	+9	1	0				SE	5.8	19	E	40.5	552.6	1
21	87	46	66	+11	0	1				NW	6.7	24	NW	31.2	562.2	0
22	68	45	56	+1	9	0				NW	12.7	32	NW	38.5	278.4	9	KFR 1600
23	58	37	48	-7	17	0				W	11.3	36	WNW	34.5	488.4	5
24	63	33	48	-7	17	0				W	7.2	25	SSW	32.8	568.8	0
25	64	43	54	-2	11	0				NW	15.4	34	WNW	32.7	580.8	2
26	66	40	53	-3	12	0				NW	6.4	21	WNW	35.2	523.8	0
27	64	35	50	-6	15	0	T			NE	9.3	33	ENE	48.5	349.2	10	KFR 1400
28	50	41	46	-11	19	0	0.18			N	13.2	30	ENE	66.0	200.4	10
29	56	41	48	-9	17	0	0.19			NW	7.9	20	NW	65.9	229.2	10
30	65	37	51	-7	14	0				N	6.9	19	NE	43.9	600.0	2
SUM					397	1	0.39	T
AVG	65.2	38.3	51.7								8.8					5.3

NOTES:				PRECIPITATION (IN.)				MISC. PHENOM. KEY
Daily summary period is midnight to midnight PST				TOTAL FOR THE MONTH			0.39	A-Hail, BD-Blowing Dust, BS-Blowing Snow
"T" in columns 7-9 denotes a trace				DEPARTURE FROM NORM			-0.05	D-Dust, AU-Aurora, DL-Distant Lightning
Snow in columns 8-9 is all frozen precipitation				24HR MAX	0.37	ON	28-29	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	9	>= 0.25	0	BAROMETRIC PRESSURE (IN.)
AVERAGE FOR THE MONTH			51.7	>= 0.01	3	>= 0.50	0	AVERAGE STATION			29.231
DEPARTURE FROM NORMAL			-1.8	>= 0.10	2	>= 1.00	0	MAX SEA-LEVEL	30.42	ON	18
HIGHEST	87	ON	21	SNOW (FROZEN PRECIP.) (IN.)				MIN SEA-LEVEL	29.54	ON	8
LOWEST	32	ON	2	TOTAL FOR THE MONTH			T	SOLAR RADIATION (LANGLEYS)
NUMBER OF DAYS WITH:				24HR MAX	T	ON	1	AVERAGE DAILY TOTAL			416.2
MAXIMUM 32 OR BELOW			0	MAX ON GRND	na	ON	na	MAX DAILY	600.0	ON	30
MAXIMUM 90 OR ABOVE			0	WIND (50-FT LEVEL)				MIN DAILY	97.8	ON	1
MINIMUM 32 OR BELOW			1	AVERAGE SPEED (MPH)			8.8	MISCELLANEOUS NUMBER OF DAYS
MINIMUM 0 OR BELOW			0	DEPARTURE FROM NORM			0	CLEAR	10	FOG	0
HEATING DEGREE DAYS (BASE 65ºF)				PEAK GUST	WNW @ 36	ON	23	PARTLY CLOUDY	12	THDR	0
TOTAL FOR THE MONTH			397	AVERAGE PSYCHROMETRIC DATA				CLOUDY	8	DUST	0
DEPARTURE FROM NORMAL			+47	DRY BULB (ºF)	51.9	WET BULB (ºF)	42.4	RELATIVE HUMIDITY EXTREMES (%)
SEASON TOTAL (SINCE JULY 1)			5386	REL. HUM. (%)	47.1	DEW PT.(ºF)	30.6	HIGHEST	99	ON	29
SEASON DEPARTURE FROM NORM			+415	+ DENOTES LATEST OF MULTIPLE DAYS				LOWEST	13	ON	21