arlwx12
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Posts posted by arlwx12
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Looks like the warm water helped keep DCA (and a few other spots "on" the water) well short of freezing.
A few other locations may also have escaped.
But IAD hit 27, BWI 30
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I prepared for tomorrow morning by looking at a list of DCA "latest last freezes" through 2023.
The most recent one on April 10 (or later) was 2016.
More on this if DCA does indeed hit freezing tomorrow (it MIGHT not).
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In 2025, "last freeze" dates at DCA/IAD/BWI:
DCA: March 3
IAD: April 9
BWI: April 9
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Warnings for an upcoming freeze all across the region.
Only SE Virginia is spared, and of course the mountains don't get freeze warnings yet.
((Sorry for those who might have thought Tax Day signalled "safe to plant" starting time for tender stuff.))
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URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 1159 PM EDT Sat Apr 18 2026 MDZ011-504-506-508-VAZ036-037-053-055-056-527-191200- /O.NEW.KLWX.FZ.A.0003.260421T0600Z-260421T1400Z/ Southern Baltimore-Central and Southeast Montgomery-Central and Southeast Howard-Southeast Harford-Nelson-Albemarle-Fairfax- Stafford-Spotsylvania-Central and Southeast Prince William/Manassas/Manassas Park- 1159 PM EDT Sat Apr 18 2026 ...FREEZE WATCH IN EFFECT FROM LATE MONDAY NIGHT THROUGH TUESDAY MORNING... * WHAT...Sub-freezing temperatures as low as 29 to 32 degrees possible, especially northwest of I-95. * WHERE...In Maryland, Central and Southeast Howard, Central and Southeast Montgomery, Southeast Harford, and Southern Baltimore Counties. In Virginia, Albemarle, Nelson, Spotsylvania, Central and Southeast Prince William/Manassas/Manassas Park, Fairfax, and Stafford Counties. * WHEN...From late Monday night through Tuesday morning. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing. PRECAUTIONARY/PREPAREDNESS ACTIONS... Take steps now to protect tender plants from the cold.
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DCA also briefly hir 90 around 1 pm.
88 as of 2:45.
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7 hours ago, Weather Will said:
Kudos to NWS for the freeze watch!
Actually, it's now a freeze warning from midnight on for the DC metro. (Other warnings up for the rest, freeze watch up for Thursday AM for the outer suburbs)
URGENT - WEATHER MESSAGE National Weather Service Baltimore MD/Washington DC 213 AM EDT Tue Apr 7 2026 DCZ001-MDZ013-014-016-VAZ054-057-071415- /O.NEW.KLWX.FZ.W.0001.260408T0400Z-260408T1300Z/ District of Columbia-Prince Georges-Anne Arundel-Charles- Arlington/Falls Church/Alexandria-King George- 213 AM EDT Tue Apr 7 2026 ...FREEZE WARNING IN EFFECT FROM MIDNIGHT TONIGHT TO 9 AM EDT WEDNESDAY... * WHAT...Sub-freezing temperatures as low as 31 expected. * WHERE...The District of Columbia. In Maryland, Anne Arundel, Prince Georges, and Charles Counties. In Virginia, King George County, and Arlington/Falls Church/Alexandria. * WHEN...From midnight tonight to 9 AM EDT Wednesday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.
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IAD hit 88 (beating the old record of 85).
Looks like DCA and IAD probably will just miss.
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Reported highs so far:
DCA 88
IAD 86
BWI 86
Earlier, LWX's discussion said the highs (all set in 1978) had been 88/85/88.
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Today so far, DCA, IAD and BWI all hit 82.
Forecast to be warmer tomorrow.
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LWX's local forecast included historic high/ warm low temperatures for today and tomorrow.
Record Daily Highs and Warm Lows for March 31 Site High/Year(s) Set Warm Low/Year(s) Set DCA 85/2025, 1981, 1979 63/1998 BWI 86/2025, 1998 68/1998 IAD 85/1998 62/1998 DMH 93/1998 73/1998 NAK 83/1979, 1945 61/1977 HGR 85/1998 57/1998 MRB 86/1998 62/1998 CHO 88/1986 67/1910 Record Daily Highs and Warm Lows for April 1 Site High/Year(s) Set Warm Low/Year(s) Set DCA 88/1978 64/2016 BWI 88/1978 62/2016 IAD 85/1978 64/2016 DMH 90/1978 69/1998 NAK 87/1978 60/1998 HGR 84/1978 60/1912 MRB 85/1943 58/2016 CHO 88/1978 68/1998
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14 hours ago, LongRanger said:
final freeze of the spring for the airports tonight?
So far at about 0430, the lows so far:
DCA 36
IAD 27
BWI 27
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Channel 5 led off the 3 pm news with video of vehicles on the outer loop of I-495 wading across.
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National Weather Service Baltimore MD/Washington DC 216 PM EDT Mon Mar 16 2026 The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... Northwestern St. Marys County in southern Maryland... Southwestern Prince Georges County in central Maryland... Charles County in southern Maryland... Southeastern Stafford County in northern Virginia... King George County in central Virginia... Southeastern Fairfax County in northern Virginia... East central Spotsylvania County in central Virginia... * Until 300 PM EDT. * At 216 PM EDT, a severe thunderstorm was located near Potomac Creek, moving northeast at 45 mph.
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High standing water on I-70 and I-495 being reported by WTOP.
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Current Status ((OPM on DC-area offices))
Status: Early Departure -- All Employees Must Depart No Later Than 2:00 PM
Early Departure -- All Employees Must Depart No Later Than 2:00 PM
“Employees of [specified Federal offices at specified locations] are authorized for Early Departure. All employees Must Depart no later than 2:00 pm at which time Federal offices are Closed.”
Telework Employees at the Office will receive weather and safety leave only for the time required to commute home. Once these employees arrive at home, they must complete any remaining portion of the workday by teleworking, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.
Non-Telework Employees at the Office will be dismissed from their office no later than the final departure time 2:00 pm (as applicable) and will be granted weather and safety leave for the number of hours remaining in their workday.
Telework Employees Performing Telework are expected to continue working and generally may not receive weather and safety leave. They must account for the entire workday by teleworking, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.
Remote Workers are expected to continue working and generally may not receive weather and safety leave. They must account for the entire workday by working, taking unscheduled leave (paid or unpaid) or other paid time off, or a combination.
Emergency Employees are expected to remain at the worksite unless otherwise directed by their agencies.
Employees Departing the Office Prior to Their Early Departure Time or the Final Departure Time (whichever is applicable) may request unscheduled leave (paid or unpaid) or other paid time off. Such employees will not be granted weather and safety leave for any part of the workday.
Employees on Preapproved Leave (paid or unpaid) or other paid time off—including an employee who has requested unscheduled leave before an early departure policy is announced—generally should continue to be charged leave or other paid time off during the scheduled time and should not receive weather and safety leave.
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Long snip from the latest LWX AFD: (bolding mine)
(snip)
Multiple rounds of severe weather look to impact the area today. The 1st wave is now ejecting across central VA and the Shenandoah Valley putting it into the Baltimore/DC metros around or just after noon. A secondary batch of storms is ejecting out of I-77 corridor down across the New River Valley/western NC mountains with another area of storms down around eastern NC. These two areas of storms will be the main show heading mid to late afternoon ahead of the squall line feature which looks to develop just in time from the evening commute. Still looking at a high impact severe weather event across the region. The Storm Prediction Center has maintained the Moderate Risk (Level 4 out of 5) area which extends from east of the Blue Ridge Mountains to the Chesapeake Bay. The one exception to this is northeastern Maryland which is in an Enhanced Risk (Level 3 out of 5) given the cooler bay waters could weaken approaching convection. (snip) With the degree of deep-layer shear in place, any of the pre-frontal discrete cells will pose a risk of becoming a supercell. These would be most conducive to producing a tornado, particularly if the enlarged 0-1 km and 0-3 km hodographs hold as true as forecast soundings depict. However, some of the high-resolution guidance show a slew of cells firing up at once which would favor more competition amongst them. This would diminish the tornado risk as multicell convection dominates. At the same time, another squall line is likely to form off the higher terrain this afternoon. While the vertical shear vector does not align perpendicular to the forming line, enough angle between the two should favor evolution into a quasi-linear convective system (QLCS). These are prone to producing spin up tornadoes along any kinks in the line. Where this line bows out is where the 70 to 80 mph wind gust possibility will be maximized. All of this slides eastward at a fairly hefty speed, perhaps 40 to 50 mph. Severe convection is expected to near the I-95 corridor during the evening rush hour before exiting the Chesapeake Bay by the early/mid evening hours. Some weakening is possible east of I-95 as the system begins to ingest the colder Chesapeake Bay waters. -
Loudoun County public schools (for now) is NOT dismissing early, will hold students if its' not safe at regular dismissal time.
Home | Loudoun County Public Schools
(text)
We are closely monitoring the severe weather forecast for our area later today. As you may know, weather systems like this can change quickly in timing and intensity, making it challenging to predict exactly when the worst conditions will arrive.
At this time, we are NOT planning an early dismissal; however, we are canceling all after- school activities and programming across campuses and administrative offices. Current forecasts suggest that the strongest conditions could occur during the window when buses would be transporting students home if we dismissed early. Out of an abundance of caution, we do not want to risk buses and student drivers being on the roads during potentially hazardous weather.
We are staying in regular contact with local emergency management and reviewing the latest forecasts throughout the day.
If conditions were to become unsafe at the end of the school day, we will hold students at school until it is safe to release them. We will provide families with updates if this occurs. Our priority is always the safety of our students and staff, and we would rather delay dismissal than send buses and families into dangerous conditions.
We will continue to keep you updated throughout the day if anything changes.
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LWX text on the tornado warning:
The National Weather Service in Sterling Virginia has issued a * Tornado Warning for... Eastern Rappahannock County in northwestern Virginia... Northwestern Fauquier County in northern Virginia... Northwestern Culpeper County in northern Virginia... * Until 1100 AM EDT. * At 1033 AM EDT, a severe thunderstorm capable of producing a tornado was located 7 miles east of Sperryville, or 12 miles northwest of Culpeper, moving northeast at 55 mph. HAZARD...Tornado.
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Sun weakly shining in south Arlington.
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Heard from someone that her kids' Loudoun County school will close 3 hours early.
Still not posted on LCPS, WUSA or WJLA websites.
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Another listing of "DC-area" school dismissals:
Closings and Delays | Washington DC | wusa9.com
This includes Arlington (2 hours early) (which WJLA doesn't yet), DC public schools, and probably other additions (such as MD schools) that WJLA doesn't list yet.
((Still waiting on Loudoun County- I know someone with school kids there...))
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As I have noted before, one source of "DC-area" closure warnings (especially on schools) is from WJLA:
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Half-mile or less visibility in Arlington.
About 1/2 inch topping tree branches.
April Discobs 2026
in Mid Atlantic
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LWX's daily reports showed a T of snow at DCA and IAD, tying records.