yoda

URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 836 AM EDT Thu Jul 2 2026 DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ037>040-050-051- 053>057-501-502-505-506-526-527-022100- /O.NEW.KLWX.XH.A.0002.260704T1400Z-260705T0000Z/ /O.CON.KLWX.XH.W.0002.260702T1400Z-260703T0000Z/ /O.CON.KLWX.XH.W.0003.260703T1400Z-260704T0000Z/ District of Columbia-Frederick-Carroll-Northern Baltimore-Cecil- Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys- Calvert-Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Southeast Harford-Albemarle-Greene-Madison-Rappahannock-Orange- Culpeper-Fairfax-Arlington/Falls Church/Alexandria-Stafford- Spotsylvania-King George-Northern Fauquier-Southern Fauquier- Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 836 AM EDT Thu Jul 2 2026 ...EXTREME HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...EXTREME HEAT WARNING REMAINS IN EFFECT FROM 10 AM TO 8 PM EDT FRIDAY... ...EXTREME HEAT WATCH IN EFFECT FROM SATURDAY MORNING THROUGH SATURDAY EVENING... * WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...For the first Extreme Heat Warning, until 8 PM EDT this evening. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday. For the Extreme Heat Watch, from Saturday morning through Saturday evening. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

Looks like 80 will be the low temp at DCA https://www.weather.gov/wrh/timeseries?site=kdca

81/76 at 5am at DCA... yuck

X Zone Forecast Product National Weather Service Baltimore MD/Washington DC 226 PM EDT Wed Jul 1 2026 DCZ001-012200- District of Columbia- Including the cities of Adams Morgan and Washington 226 PM EDT Wed Jul 1 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...EXTREME HEAT WARNING IN EFFECT FROM 10 AM TO 8 PM EDT THURSDAY... ...EXTREME HEAT WARNING IN EFFECT FROM 10 AM TO 8 PM EDT FRIDAY... .THIS AFTERNOON...Sunny, hot with highs in the upper 90s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Heat index values up to 109. .TONIGHT...Mostly clear. Isolated showers and thunderstorms in the evening. Lows in the upper 70s. Southwest winds 5 to 10 mph. Chance of rain 20 percent. .THURSDAY...Sunny, hot with highs around 103. West winds around 5 mph. Heat index values up to 111. .THURSDAY NIGHT...Clear. Lows around 80. Southwest winds around 5 mph in the evening, becoming light and variable. .FRIDAY...Sunny, hot with highs around 104. Northwest winds around 5 mph. Heat index values up to 113. .FRIDAY NIGHT...Partly cloudy. Lows around 80. .INDEPENDENCE DAY...Mostly sunny with a chance of showers and thunderstorms. Hot with highs around 100. Chance of rain 50 percent. Heat index values up to 110. .SATURDAY NIGHT...Mostly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 50 percent. .SUNDAY...Showers likely with a chance of thunderstorms. Hot with highs in the upper 90s. Chance of rain 60 percent. Heat index values up to 110.

GENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 132 PM EDT Wed Jul 1 2026 DCZ001-MDZ004>006-008-011-013-014-016>018-503>508-VAZ037>040-050-051- 053>057-501-502-505-506-526-527-020300- /O.UPG.KLWX.XH.A.0001.260702T1500Z-260704T0000Z/ /O.NEW.KLWX.XH.W.0003.260703T1400Z-260704T0000Z/ /O.NEW.KLWX.XH.W.0002.260702T1400Z-260703T0000Z/ /O.CON.KLWX.HT.Y.0004.000000T0000Z-260702T0000Z/ District of Columbia-Frederick-Carroll-Northern Baltimore-Cecil- Southern Baltimore-Prince Georges-Anne Arundel-Charles-St. Marys- Calvert-Northwest Montgomery-Central and Southeast Montgomery- Northwest Howard-Central and Southeast Howard-Northwest Harford- Southeast Harford-Albemarle-Greene-Madison-Rappahannock-Orange- Culpeper-Fairfax-Arlington/Falls Church/Alexandria-Stafford- Spotsylvania-King George-Northern Fauquier-Southern Fauquier- Western Loudoun-Eastern Loudoun-Northwest Prince William-Central and Southeast Prince William/Manassas/Manassas Park- 132 PM EDT Wed Jul 1 2026 ...HEAT ADVISORY REMAINS IN EFFECT UNTIL 8 PM EDT THIS EVENING... ...EXTREME HEAT WARNING IN EFFECT FROM 10 AM TO 8 PM EDT THURSDAY... ...EXTREME HEAT WARNING IN EFFECT FROM 10 AM TO 8 PM EDT FRIDAY... * WHAT...For the Heat Advisory, heat index values up to 107. For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. * WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia. * WHEN...For the Heat Advisory, until 8 PM EDT this evening. For the first Extreme Heat Warning, from 10 AM to 8 PM EDT Thursday. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

Looks like 82/70 at 9am for DC

For tomorrow URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1243 PM EDT Mon Jun 29 2026 MDZ502-WVZ050-055-502-504-506-300100- /O.NEW.KLWX.HT.Y.0003.260630T1500Z-260701T0000Z/ Central and Eastern Allegany-Hampshire-Hardy-Eastern Grant- Eastern Mineral-Eastern Pendleton- 1243 PM EDT Mon Jun 29 2026 ...HEAT ADVISORY IN EFFECT FROM 11 AM TO 8 PM EDT TUESDAY... * WHAT...Heat index values up to 102 expected. * WHERE...In Maryland, Central and Eastern Allegany County. In West Virginia, Eastern Grant, Eastern Mineral, Eastern Pendleton, Hampshire, and Hardy Counties. * WHEN...From 11 AM to 8 PM EDT Tuesday. * IMPACTS...Hot temperatures and high humidity may cause heat illnesses. PRECAUTIONARY/PREPAREDNESS ACTIONS... Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! In cases of heat stroke, call 9 1 1.

So if we hit it twice, does this mean you will watch it 4 times?

I believe it was @Ian who coined the 90 by 11am (or was it 10am?) for DCA to breach 100 degrees?

Too late

Figured as @CAPE said to make a thread about it since the heat is coming... will it break records? Discuss!

I see Mt. Holly has already issued EHWs... I expect LWX probably will tomorrow

Maybe because its 4th of July weekend and so many people will be out? Go extremely hot and try to get the word out? I mean besides us... I dont think many people are going to care for the difference between 100 and 105.

LWX going 105 in the zones at DCA for Friday .WEDNESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. .THURSDAY...Sunny, hot with highs 100 to 105. Heat index values up to 110. .THURSDAY NIGHT...Mostly clear. Lows around 80. .FRIDAY...Sunny with a chance of showers and thunderstorms. Hot with highs around 105. Chance of rain 30 percent. .FRIDAY NIGHT...Partly cloudy. Lows in the upper 70s. .INDEPENDENCE DAY...Mostly sunny with a chance of showers and thunderstorms. Hot with highs around 100. Chance of rain 40 percent.

Sunday and Monday aren't much better on the 12z Euro Sunday 2pm 2mT Monday 2pm 2mT

I edited my post above and added the images

12z Euro apparently left the oven on for Thursday to Saturday looking at 2mT Thursday 2pm 2mT Friday 2pm 2mT Saturday 2pm 2mT

We need a write up on what went wrong

Toasty... 226pm ZFP for DC metro WEDNESDAY...Sunny, hot with highs in the upper 90s. Heat index values up to 110. .WEDNESDAY NIGHT...Clear. Lows in the upper 70s. .THURSDAY...Sunny, hot with highs 100 to 105. Heat index values up to 115. .THURSDAY NIGHT...Mostly clear. Lows around 80. .FRIDAY...Sunny, hot with highs 100 to 105. Heat index values up to 110.

@Eskimo Joe already calling for extreme heat risk by LWX in this afternoon AFD KEY MESSAGE 2...Significant heat risk next week heading into the Independence Day holiday. Increased confidence for a prolonged period of extreme heat and humidity starting Tuesday, June 30th and lasting through the Independence Day July 4th holiday weekend. Synoptically, subtropical high pressure and a building upper-level ridge will allow temperatures and humidity values to climb toward record levels over a multi-day period mid to late next week. Temperatures start to climb Tuesday as the upper-level ridge expands eastward from the Ohio River Valley. Look for highs in the 90s with heat indices running between 95-100 degrees. Wednesday through Sunday will be the peak of the dangerous heat with highs for most in the upper 90s and lower 100s. Heat indices each afternoon will run between 102-108 degrees with a few readings around 110 along the immediate I-95 metro corridor, western shore of the bay/southern MD, and down across the VA Piedmont region. Minimal relief is expected across the mountains with highs in the mid 80s and low 90s and heat indices in the mid to upper 90s as the heat peaks mid to late week. No relief at night either with widespread lows in the upper 60s to mid 70s (upper 70s-80 urban areas) Wednesday through Saturday. With that said, looking at major to extreme heat risk across the region during this period. Heat headlines will likely be needed and evaluated as the event gets closer. More at weather.gov/lwx/heat. Model guidance (00z, 06z, and 12z) has come into better alignment in regards to temperatures next week with only a few degrees of spread. On the other side of the spectrum, some uncertainty remains in regards to storm chances given the placement of boundaries and any waves of low pressure that may clear away the heat. The ridge looks to sit just west of the region if not overhead Tuesday before shunting eastward late week into the weekend. This would keep storm chances suppressed across most of the region outside of the mountains Tuesday through Thursday given the lack of any real forcing mechanisms outside the terrain or perhaps bay/river breezes. This changes Thursday through the weekend where storm chances may be amplified given a few pieces of energy pivoting over the top of the upper-level ridge in west to northwest flow. With excessive heat and humidity there will be plenty of instability to work with. You combine this with any potential ripples of low pressure moving around the ridge or a bay/river breeze to get convective development. This is illustrated by CSU/CIPS/NSSL (15-40 percent probabilities) outlooks along with Google WxNext AI model which suggest the risk for severe weather during the Thursday July 2nd to Saturday July 4th timeframe. Something we`ll continue to monitor in subsequent forecast shifts given all the ongoing outdoor activities across the region. Historically, near record summer heat often ends with widespread strong thunderstorm activity, and latest guidance starts to break down the heat next weekend (July 4) into early next week.

Happy Birthday!

And here we go.... note this is DC metro 34 35 36 560 FPUS51 KLWX 271157 ZFPLWX Zone Forecast Product National Weather Service Baltimore MD/Washington DC 756 AM EDT Sat Jun 27 2026 DCZ001-271500- District of Columbia- Including the cities of Adams Morgan and Washington 756 AM EDT Sat Jun 27 2026 .TODAY...Mostly cloudy with scattered showers. Isolated thunderstorms this morning, then scattered thunderstorms this afternoon. Highs in the lower 80s. Southeast winds around 5 mph. Chance of rain 50 percent. .TONIGHT...Mostly cloudy. Numerous showers and scattered thunderstorms in the evening, then scattered showers with isolated thunderstorms after midnight. Patchy fog after midnight. Lows in the upper 60s. Southeast winds around 5 mph in the evening, becoming light and variable. Chance of rain 60 percent. .SUNDAY...Mostly cloudy. Patchy fog in the morning. Isolated showers in the morning, then numerous showers and scattered thunderstorms in the afternoon. Highs in the mid 80s. Northeast winds around 5 mph. Chance of rain 70 percent. .SUNDAY NIGHT...Mostly cloudy with scattered showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 60s. East winds around 5 mph in the evening, becoming light and variable. Chance of rain 50 percent. .MONDAY...Mostly sunny. Highs in the upper 80s. East winds around 5 mph. .MONDAY NIGHT...Mostly clear. Lows in the upper 60s. .TUESDAY...Sunny. Highs in the lower 90s. .TUESDAY NIGHT...Mostly clear. Lows in the lower 70s. .WEDNESDAY...Sunny, hot with highs in the upper 90s. .WEDNESDAY NIGHT...Mostly clear. Lows in the upper 70s. .THURSDAY...Sunny, hot with highs 100 to 105. Heat index values up to 110. .THURSDAY NIGHT...Mostly clear. Lows in the lower 80s. .FRIDAY...Sunny, hot with highs 100 to 105. Heat index values up to 110.

LWX afternoon AFD already mentioning low 100s @Eskimo Joe Wednesday through Friday will be the peak of the heat with highs for most in the upper 90s and lower 100s. Heat indices each afternoon with run between 102-107 degrees with a few readings around 110 along the immediate I-95 metro corridor and down across the VA Piedmont region. Minimal relief is expected across the mountains with highs in the mid 80s to low 90s and heat indices in the mid to upper 90s as the heat peaks mid to late week. No relief at night either with widespread lows in the upper 60s to mid 70s (upper 70s-80 urban areas) Wednesday through Saturday. More at weather.gov/lwx/heat. Even with that said, there still remains some spread in temperature data mid to late next week. Some of this is due top the placement and positioning of the ridge along with any t-storm chances that may develop late next week. Right now, any convection looks to be tied to the mountains Wednesday and Thursday due in part to the terrain influence. With excessive heat and humidity there will be plenty of instability to work with. You combine this with any potential ripples of low pressure moving around the ridge or a bay/river breeze to get convective development. This is illustrated by both the CSU/CIPS outlooks along with Google WxNext AI model which suggest the risk for severe weather during the Friday July 3rd and Saturday July 4 timeframe. Something we`ll continue to monitor in subsequent forecast shifts. Historically, near record summer heat often ends with widespread strong thunderstorm activity, and latest guidance starts to break down the heat next weekend (July 4).

Just checking what the 12z ICON days for fun for Wednesday to Friday at DCA... oh. 103/106/106... HI values 110-115

Even 06z Euro has low 100s for most of the region on Wednesday