Washington/Dulles Intl, US
Flight category
Instrument Flight Rules — ceiling 500–1000 ft OR visibility 1–3 sm
Likely runway
36
est. from wind
Wind
360° / 18 kt G23
From the N, gusts to 23 kt
Visibility
2 sm
Clouds
SCT 2,300 ft, BKN 7,500 ft, OVC 10,000 ft
Scattered (3–4 oktas) @ 2,300 ft AGL · Broken (5–7 oktas) @ 7,500 ft AGL · Overcast (8 oktas) @ 10,000 ft AGL
Ceiling
7,500 ft AGL
Lowest BKN/OVC layer
Temp / Dewpoint
21.1°C / 20°C
Spread 1.1°C — fog risk
Altimeter
30.04 inHg
1017.4 hPa
Phenomena
+TSRA BR
heavy thunderstorm rain mist
SPECI KIAD 210111Z COR 36018G23KT 2SM R01R/2600VP6000FT +TSRA BR SCT023CB BKN075 OVC100 21/20 A3004 RMK AO2 OCNL LTGICCC OHD TS OHD MOV NE P0012 T02110200 $TAF KIAD 210013Z 2100/2206 33004KT P6SM -SHRA VCTS OVC090CB TEMPO 2100/2103 6SM -TSRA OVC040CB FM210300 36004KT P6SM VCSH OVC100 FM210800 01007KT P6SM OVC010 FM211500 02011KT 5SM -SHRA OVC010 FM211700 02009KT 5SM -SHRA OVC008Altitude: — – 45,000 ft
WSUS31 KKCI 210055 SIGE CONVECTIVE SIGMET 4E VALID UNTIL 0255Z MD VA DC WV FROM 40E EMI-40S CSN-30W LYH-20N EKN-40E EMI AREA SEV EMBD TS MOV FROM 25020KT. TOPS ABV FL450. HAIL TO 1 IN...WIND GUSTS TO 50KT POSS. OUTLOOK VALID 210255-210655 AREA 1...FROM 30ENE HTO-70S HTO-40S PSK-40ENE CEW-CEW-BNA-30ENE HTO REF WW 235 236. WST ISSUANCES EXPD. REFER TO MOST RECENT ACUS01 KWNS FROM STORM PREDICTION CENTER FOR SYNOPSIS AND METEOROLOGICAL DETAILS. AREA 2...FROM 50N PIE-ORL-120SE MIA-EYW-80WSW RSW-50N PIE WST ISSUANCES EXPD. REFER TO MOST RECENT ACUS01 KWNS FROM STORM PREDICTION CENTER FOR SYNOPSIS AND METEOROLOGICAL DETAILS.
Imagery courtesy of Iowa State Mesonet (NEXRAD) and NOAA. Not for navigation.

GFS Skew-T from Iowa State; FB text from NOAA AWC. Plan with care.
38.9348
-77.4473
90 m
US
KIAD NOTAMs
Active notices to airmen