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Point Forecast: Tysons Corner VA  38.91N 77.22W (Elev. 449 ft)	Last Update: 10:32 am EDT May 7, 2021

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Weather Elements Weather/Precipitation Fire Weather Temperature (°F) Dewpoint (°F) Heat Index (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Fog Mixing Height  x100ftx100m Haines Index Lightning Activity Level Trans. Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft) Atmospheric Dispersion Index Low Visibility Occurrence Risk Index

48-Hour Period Starting: 11am Fri, May 7 202112pm Fri, May 7 20211pm Fri, May 7 20212pm Fri, May 7 20213pm Fri, May 7 20214pm Fri, May 7 20215pm Fri, May 7 20216pm Fri, May 7 20217pm Fri, May 7 20218pm Fri, May 7 20219pm Fri, May 7 202110pm Fri, May 7 202111pm Fri, May 7 202112am Sat, May 8 20211am Sat, May 8 20212am Sat, May 8 20213am Sat, May 8 20214am Sat, May 8 20215am Sat, May 8 20216am Sat, May 8 20217am Sat, May 8 20218am Sat, May 8 20219am Sat, May 8 202110am Sat, May 8 202111am Sat, May 8 202112pm Sat, May 8 20211pm Sat, May 8 20212pm Sat, May 8 20213pm Sat, May 8 20214pm Sat, May 8 20215pm Sat, May 8 20216pm Sat, May 8 20217pm Sat, May 8 20218pm Sat, May 8 20219pm Sat, May 8 202110pm Sat, May 8 202111pm Sat, May 8 202112am Sun, May 9 20211am Sun, May 9 20212am Sun, May 9 20213am Sun, May 9 20214am Sun, May 9 20215am Sun, May 9 20216am Sun, May 9 20217am Sun, May 9 20218am Sun, May 9 20219am Sun, May 9 202110am Sun, May 9 202111am Sun, May 9 202112pm Sun, May 9 20211pm Sun, May 9 20212pm Sun, May 9 20213pm Sun, May 9 20214pm Sun, May 9 20215pm Sun, May 9 20216pm Sun, May 9 20217pm Sun, May 9 20218pm Sun, May 9 20219pm Sun, May 9 202110pm Sun, May 9 202111pm Sun, May 9 202112am Mon, May 10 20211am Mon, May 10 20212am Mon, May 10 20213am Mon, May 10 20214am Mon, May 10 20215am Mon, May 10 20216am Mon, May 10 20217am Mon, May 10 20218am Mon, May 10 20219am Mon, May 10 202110am Mon, May 10 202111am Mon, May 10 202112pm Mon, May 10 20211pm Mon, May 10 20212pm Mon, May 10 20213pm Mon, May 10 20214pm Mon, May 10 20215pm Mon, May 10 20216pm Mon, May 10 20217pm Mon, May 10 20218pm Mon, May 10 20219pm Mon, May 10 202110pm Mon, May 10 202111pm Mon, May 10 202112am Tue, May 11 20211am Tue, May 11 20212am Tue, May 11 20213am Tue, May 11 20214am Tue, May 11 20215am Tue, May 11 20216am Tue, May 11 20217am Tue, May 11 20218am Tue, May 11 20219am Tue, May 11 202110am Tue, May 11 202111am Tue, May 11 202112pm Tue, May 11 20211pm Tue, May 11 20212pm Tue, May 11 20213pm Tue, May 11 20214pm Tue, May 11 20215pm Tue, May 11 20216pm Tue, May 11 20217pm Tue, May 11 20218pm Tue, May 11 20219pm Tue, May 11 202110pm Tue, May 11 2021

Date	05/07													05/08
Hour (EDT)	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10
Temperature (°F)	63	65	65	64	63	61	59	56	54	52	51	51	50	49	48	47	46	45	44	44	45	48	49	51
Dewpoint (°F)	41	41	41	41	42	44	46	46	46	46	45	44	44	43	42	41	40	40	40	40	41	42	42	41
Heat Index (°F)
Surface Wind (mph)	8	9	9	9	10	9	11	11	11	11	10	10	8	8	8	8	7	7	7	7	8	8	10	13
Wind Dir	S	S	SW	SW	SW	W	W	W	NW	NW	NW	NW	NW	NW	NW	NW	NW	W	W	W	W	W	W	NW
Gust
Sky Cover (%)	98	99	99	100	100	100	99	99	98	97	92	82	77	63	36	22	31	49	58	65	80	87	81	68
Precipitation Potential (%)	26	26	26	62	62	62	98	98	98	51	51	51	18	18	18	3	3	3	35	35	35	40	40	40
Relative Humidity (%)	44	41	41	43	46	53	62	69	74	80	80	77	80	80	80	79	79	82	86	86	86	80	77	68
Rain	Chc	Chc	Chc	Lkly	Lkly	Lkly	Ocnl	Ocnl	Ocnl	Chc	Chc	Chc	SChc	SChc	SChc	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc
Thunder	--	--	--	Chc	Chc	Chc	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date														05/09
Hour (EDT)	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01	02	03	04	05	06	07	08	09	10
Temperature (°F)	54	55	55	56	57	57	57	56	55	54	53	51	50	49	48	47	46	46	46	47	48	49	51	53
Dewpoint (°F)	40	38	36	35	34	34	34	34	35	35	35	35	35	35	36	36	36	37	37	38	38	39	39	39
Heat Index (°F)
Surface Wind (mph)	14	15	15	15	17	17	18	16	14	10	9	8	8	7	7	7	7	6	6	5	3	3	5	6
Wind Dir	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	NW	W	W	W	SW	SW
Gust	18	20	20	20	23	23	24	21	18
Sky Cover (%)	61	60	58	57	55	52	50	45	35	30	26	17	12	14	19	21	29	44	51	55	63	67	72	81
Precipitation Potential (%)	40	40	40	12	12	12	2	2	2	2	2	2	2	2	2	6	6	6	6	6	6	38	38	38
Relative Humidity (%)	59	53	49	45	42	42	42	43	47	48	50	54	56	58	63	65	68	71	71	71	68	68	63	59
Rain	Chc	Chc	Chc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	Chc	Chc	Chc
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

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