George BM

Could be a nice looking storm-cloud base over Springfield atm.

A thin line of clouds have been over northern VA and generally over my house since before sunrise. https://weather.cod.edu/satrad/?parms=subregional-Virginias-02-96-1-25-1&checked=map&colorbar=undefined

18z IAD sounding. Steep LLLRs and fairly high Pwats... though weak MLLRs. Could be some decent downburst/outflow winds should storms mature locally.

It's an MCV from a storm complex that died over Kentucky pre-dawn this morning. And, yeah, it'll be interesting the see whether it can fire up a batch of storms locally later. Storms are already forming under the vortmax.

Yeap. Everything Kmlwx said. That's my go to link for weather obs at IAD.

IAD has hit 101F. First time since 2012.

3pm obs: DCA: 103F BWI: 103F IAD: 100F

Looks like DCA has hit 104F! Wow.

IAD finally joins the triple-digit party at 100F.

BWI with a one-O-two.

1pm obs: DCA: 101F BWI: 100F IAD: 97F

Already 100F at BWI.

12pm obs: BWI: 99F DCA: 96F IAD: 96F

BWI has hit 102F.

3pm obs: DCA: 101F (New daily record) BWI: 100F IAD: 97F

BWI has also hit 100F.

DCA has hit 100F. IAD has hit 99F so far. BWI at least 99F.

Got about 0.35" or so here. (Herndon, VA) That's 0.55" for July so far.

Gorgeous sunset right now.

Ask and ye shall receive. URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 205 PM EDT Tue Jul 9 2024 DCZ001-MDZ013-014-016>018-504-506-VAZ053-054-527-100215- /O.UPG.KLWX.HT.Y.0008.000000T0000Z-240710T0000Z/ /O.EXA.KLWX.EH.W.0004.000000T0000Z-240710T0000Z/ /O.CON.KLWX.HT.Y.0009.240710T1600Z-240711T0000Z/ District of Columbia-Prince Georges-Anne Arundel-Charles- St. Marys-Calvert-Central and Southeast Montgomery- Central and Southeast Howard-Fairfax- Arlington/Falls Church/Alexandria- Central and Southeast Prince William/Manassas/Manassas Park- Including the cities of Washington, Bowie, Suitland-Silver Hill, Clinton, College Park, Greenbelt, Laurel, Camp Springs, Glen Burnie, Annapolis, Severn, South Gate, Severna Park, Arnold, Odenton, St. Charles, Waldorf, Lexington Park, California, Chesapeake Beach, Huntingtown, Dunkirk, North Beach, Lusby, Prince Frederick, Bethesda, Rockville, Gaithersburg, Silver Spring, Columbia, Ellicott City, Reston, Herndon, Annandale, Centreville, Chantilly, McLean, Franconia, Arlington, Alexandria, Falls Church, Dale City, Manassas, Woodbridge, Lake Ridge, and Montclair 205 PM EDT Tue Jul 9 2024 ...EXCESSIVE HEAT WARNING IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM EDT WEDNESDAY... * WHAT...For the Excessive Heat Warning, dangerously hot conditions with heat index values up to 110. For the Heat Advisory, heat index values up to 107 expected. * WHERE...Portions of central and southern Maryland, The District of Columbia and northern Virginia. * WHEN...For the Excessive Heat Warning, until 8 PM EDT this evening. For the Heat Advisory, from noon to 8 PM EDT Wednesday. * IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities. * ADDITIONAL DETAILS...Very warm and humid conditions will persist into the overnight hours. Ensure to stay hydrated and find ways to stay cool.

Dulles at 96/73.

Fifth 95+F day in a row at IAD.

IAD bottomed out at just 79F this morning! Thankfully dewpoints were a bit lower with a slight breeze or running outside would have been torture. It was still quite a bit warmer than ideal for sure though. Back to the 79F low at IAD. If we don't get below that by 1am tomorrow morning (that would be midnight going by standard time which the NWS uses) It will tie the all-time warmest daily low there.

IAD at 98F. 98/70

Decent gradient indeed. 2 tenths of an inch IMBY.