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LWX issues Flood Watch valid at May 27, 4:00 AM EDT for Eastern Garrett, Extreme Western Allegany, Western Garrett [MD] and Western Grant, Western Mineral, Western Pendleton [WV] till May 27, 4:00 PM EDT

https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KLWX-FA-A-0001_2026-05-27T08:00Z

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NWS Washington DC Bot @[email protected] · 2026-05-26 · 16:19 UTC

LWX issues Flood Watch valid at May 27, 4:00 AM EDT for Eastern Garrett, Extreme Western Allegany, Western Garrett [MD] and Western Grant, Western Mineral, Western Pendleton [WV] till May 27, 4:00 PM EDT

https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KLWX-FA-A-0001_2026-05-27T08:00Z

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 16:19 UTC

LWX issues Flood Watch valid at May 27, 4:00 AM EDT for Eastern Garrett, Extreme Western Allegany, Western Garrett [MD] and Western Grant, Western Mineral, Western Pendleton [WV] till May 27, 4:00 PM EDT

https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KLWX-FA-A-0001_2026-05-27T08:00Z

#dcwx #mdwx #vawx

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NWS Washington DC Bot @[email protected] · 2026-05-26 · 16:19 UTC

LWX issues Flood Watch valid at May 27, 4:00 AM EDT for Eastern Garrett, Extreme Western Allegany, Western Garrett [MD] and Western Grant, Western Mineral, Western Pendleton [WV] till May 27, 4:00 PM EDT

https://mesonet.agron.iastate.edu/vtec/f/2026-O-NEW-KLWX-FA-A-0001_2026-05-27T08:00Z

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 15:00 UTC

LWX issues Hazardous Weather Outlook (HWO) at May 26, 11:00 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261500-KLWX-FLUS41-HWOLWX

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 15:00 UTC

LWX issues Hazardous Weather Outlook (HWO) at May 26, 11:00 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261500-KLWX-FLUS41-HWOLWX

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 15:00 UTC

LWX issues Hazardous Weather Outlook (HWO) at May 26, 11:00 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261500-KLWX-FLUS41-HWOLWX

#dcwx #mdwx #vawx

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NWS Washington DC Bot @[email protected] · 2026-05-26 · 15:00 UTC

LWX issues Hazardous Weather Outlook (HWO) at May 26, 11:00 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261500-KLWX-FLUS41-HWOLWX

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 13:00 UTC

LWX issues Area Forecast Discussion (AFD) at May 26, 9:00 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261300-KLWX-FXUS61-AFDLWX

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 13:00 UTC

LWX issues Area Forecast Discussion (AFD) at May 26, 9:00 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261300-KLWX-FXUS61-AFDLWX

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 13:00 UTC

LWX issues Area Forecast Discussion (AFD) at May 26, 9:00 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261300-KLWX-FXUS61-AFDLWX

#dcwx #mdwx #vawx

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NWS Washington DC Bot @[email protected] · 2026-05-26 · 13:00 UTC

LWX issues Area Forecast Discussion (AFD) at May 26, 9:00 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261300-KLWX-FXUS61-AFDLWX

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 10:49 UTC

LWX issues Hazardous Weather Outlook (HWO) at May 26, 6:48 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261048-KLWX-FLUS41-HWOLWX

#dcwx #mdwx #vawx

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NWS Washington DC Bot @[email protected] · 2026-05-26 · 10:49 UTC

LWX issues Hazardous Weather Outlook (HWO) at May 26, 6:48 AM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605261048-KLWX-FLUS41-HWOLWX

#dcwx #mdwx #vawx

NWS Washington DC Bot @[email protected] · 2026-05-26 · 10:48 UTC

LWX cancels Dense Fog Advisory for Carroll, Cecil, Northern Baltimore, Northwest Harford, Southeast Harford [MD]

https://mesonet.agron.iastate.edu/vtec/f/2026-O-CAN-KLWX-FG-Y-0012_2026-05-26T10:47Z

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NWS Washington DC Bot @[email protected] · 2026-05-26 · 10:48 UTC

LWX cancels Dense Fog Advisory for Carroll, Cecil, Northern Baltimore, Northwest Harford, Southeast Harford [MD]

https://mesonet.agron.iastate.edu/vtec/f/2026-O-CAN-KLWX-FG-Y-0012_2026-05-26T10:47Z

#dcwx #mdwx #vawx

BakersRelay @[email protected] · 2026-05-26 · 10:14 UTC

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Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
315 AM EDT Tue May 26 2026

MARINE

Light southeast winds develop this afternoon, then become variable tonight into Wednesday. Areas of dense fog are possible this morning. Thunderstorms are possible across the waters Wednesday afternoon, and Special Marine Warnings may be needed. Small Craft Advisory conditions are possible Thursday into Thursday night.

Wind gusts predominantly stay below SCA criteria on Friday, but could briefly approach low-end SCA criteria in the southern portions of the Chesapeake Bay in the morning. Winds start to increase over the waters late Saturday afternoon and evening, with SCAs becoming a possibility over the southern Bay during then. Northerly winds briefly trend southerly on Friday night before flowing northerly again by Saturday evening.

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BakersRelay @[email protected] · 2026-05-26 · 10:14 UTC

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Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
315 AM EDT Tue May 26 2026

WHAT HAS CHANGED

Continue to monitor developing fog across the area that could require a Dense Fog Advisory. For this afternoon, models indicate some flood threat will be present due to slow storm motion and heavy rainfall.

KEY MESSAGES

- 1) Localized flood threat today, with flood and severe thunderstorm threats areawide Wednesday.

- 2) High pressure moves into the region Friday, with temperatures remaining seasonable into next week.

DISCUSSION

KEY MESSAGE 1...Localized flood threat today, with flood and severe thunderstorm threats areawide Wednesday.

Weak surface high to the north will push offshore while a stalled frontal boundary lingers over the region through Wednesday. Areas of mist and fog this morning slowly dissipate after sunrise, with spotty showers possible through the early afternoon.

The Bermuda High remains in place across the southwestern Atlantic, with split flow across the central CONUS converging over the Mid- Atlantic. Deep southerly flow on the western periphery of the Bermuda High continues to advect deep tropical moisture into our area. Expecting another round of diurnally driven showers and thunderstorms today. Light southeast flow develops today, which will favor showers and thunderstorms west of the Blue Ridge and in Central VA.

Storm motion is going to be slow and erratic due to weak low-level flow. Very high PWATs around 1.9" and a deep warm cloud layer could yield rainfall rates in excess of 1-2"/hr in the strongest storms. This could result in a flood threat, especially if thunderstorms become locked to the terrain (which could yield are higher flood threat for that local area). The RRFS and HRRR indicate this is a possibility. WPC has a Marginal Risk (level 1 of 4) for flash flooding in these areas, and that aligns well with the current thinking of how many heavy thunderstorms will develop. One of the underlying uncertainties is going to be where these storms develop. Overall, the flood threat is on the low side, but potential impacts could be higher.

By Wednesday the upper troughing to the north begins to slide south, with an accompanying cold front also pushing south through the Mid- Atlantic. The presence of growing instability, lingering deep layer moisture, and much more forcing/shear from the upper trough is going to introduce a severe weather threat for most of the area. Coverage of thunderstorms is still uncertain, but it will certainly be more than Tuesday. Storm motion is going to be faster as deep-layer winds increase, but locally heavy rainfall could produce some flood threat, especially in urban areas. SPC has introduced a Marginal Risk (level 1 of 5) for sever thunderstorms on Wednesday.

Dry conditions and sunshine finally return Thursday.

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BakersRelay @[email protected] · 2026-05-26 · 10:11 UTC

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AREA FORECAST DISCUSSION
National Weather Service Wakefield VA
335 AM EDT Tue May 26 2026

MARINE

As of 335 AM EDT Tuesday...

Key Messages:

- Marine dense fog remains a concern today, particularly north of Parramore Island on the ocean.

- Sub-SCA winds and seas prevail through most of this week. Thunderstorms could bring locally higher winds and waves today and Wednesday.

The weak frontal boundary that has resided near or over the area the past several days is situated just north of the waters this morning. The wind direction varies from the SW in the southern waters to a light W/NW or variable wind in the northern waters. The light flow and moist airmass continues to exacerbate fog concerns, with < 1 NM visbilities likely present N of Parramore Island on the ocean. A Dense Fog Advisory is now in effect through the early afternoon. Additional fog is possible through the day and could expand southward this afternoon and evening, but confidence is not particularly high. Additionally, showers and isolated storms are again possible today with the highest probability in the lower Chesapeake Bay and S of Cape Charles on the ocean. These will be in association with the aforementioned front, which will slowly drop southward through the day. In general, the SW wind this morning should become rather variable later today with the front nearby. A gradual shift back to the S and SW is then expected tonight into Wednesday as the front lifts back N. Seas average 2-3 ft with 1-2 ft waves in the Chesapeake Bay during this time.

A stronger cold front drops southward across the area early Thursday with the wind becoming northerly. While a brief surge in northerly winds is possible along and just behind the front late Thursday morning, conditions should mostly stay sub-SCA. High pressure builds in from NW Friday with light winds. A stronger system could bring a period of N/NE winds this weekend, with gradually building seas and potential SCAs.

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NWS Washington DC Bot @[email protected] · 2026-05-24 · 01:30 UTC

LWX issues Area Forecast Discussion (AFD) at May 23, 9:29 PM EDT

https://mesonet.agron.iastate.edu/p.php?pid=202605240129-KLWX-FXUS61-AFDLWX

#dcwx #mdwx #vawx