Mark Miller's Avatar

Mark Miller

@mark-wx.bsky.social

NOAA/NWS meteorologist at WPC.

127 Followers  |  153 Following  |  3 Posts  |  Joined: 18.12.2024  |  1.6133

Latest posts by mark-wx.bsky.social on Bluesky

Zoomed map of the Excessive Rainfall Outlook for Thursday, July 31, 2025 on Maryland, Washington D.C., and northern Virginia. This outlook update was issued at about 4 AM Eastern and may be revised during the day.

Zoomed map of the Excessive Rainfall Outlook for Thursday, July 31, 2025 on Maryland, Washington D.C., and northern Virginia. This outlook update was issued at about 4 AM Eastern and may be revised during the day.

Zoomed map of the Excessive Rainfall Outlook for Thursday, July 31, 2025 on Nee Jersey, southeast Pennsylvania, and Delaware. This outlook update was issued at about 4 AM Eastern and may be revised during the day.

Zoomed map of the Excessive Rainfall Outlook for Thursday, July 31, 2025 on Nee Jersey, southeast Pennsylvania, and Delaware. This outlook update was issued at about 4 AM Eastern and may be revised during the day.

Urban corridor from DC to Philly to New York City should be prepared for the flash flood threat to escalate quickly this afternoon. Likely intense rain rates, but also bad timing: just before or during commute.

Early outlook snapshot below. Updating data here: www.wpc.ncep.noaa.gov/qpf/excessiv...

31.07.2025 11:33 — 👍 21    🔁 10    💬 0    📌 2
Post image

2.39” in the gauge from this evening’s downpour. #MDwx

20.07.2025 00:33 — 👍 1    🔁 0    💬 0    📌 0
Post image Post image Post image

Think it’s been especially humid in the DMV lately? You’d be right. Avg dew point (computed by averaging daily max/min dew point) at the three major climate sites (BWI/DCA/IAD) for July 2025 thru today all top 2 on record, and BWI is #1. Yuck. Made via mesonet.agron.iastate.edu/plotting/auto/ # 140

17.07.2025 23:36 — 👍 1    🔁 0    💬 0    📌 0
Post image Post image Post image Post image

WPC issued as many as six MPDs for the deadly flash flooding in the TX Hill Country starting yesterday evening and lasting through much of today. The first MPD generally set the stage for what was to come, while the next three shown were as the event unfolded.

05.07.2025 00:03 — 👍 451    🔁 139    💬 5    📌 43
Post image

69 degree dew point this morning. #nice

16.05.2025 13:34 — 👍 1    🔁 0    💬 0    📌 0
NOAA Weather Prediction Center Excessive Rainfall Outlooks all valid for 2-3 April 2025. The outlooks were very consistent in their location and the observed flooding occurred essentially right in the locations where the outlooks showed the highest probabilities.

NOAA Weather Prediction Center Excessive Rainfall Outlooks all valid for 2-3 April 2025. The outlooks were very consistent in their location and the observed flooding occurred essentially right in the locations where the outlooks showed the highest probabilities.

NOAA Weather Prediction Center Excessive Rainfall Outlooks all valid for 3-4 April 2025. The outlooks were very consistent in their location and the observed flooding occurred essentially right in the locations where the outlooks showed the highest probabilities.

NOAA Weather Prediction Center Excessive Rainfall Outlooks all valid for 3-4 April 2025. The outlooks were very consistent in their location and the observed flooding occurred essentially right in the locations where the outlooks showed the highest probabilities.

NOAA Weather Prediction Center Excessive Rainfall Outlooks all valid for 4-5 April 2025. The outlooks were very consistent in their location and the observed flooding occurred essentially right in the locations where the outlooks showed the highest probabilities.

NOAA Weather Prediction Center Excessive Rainfall Outlooks all valid for 4-5 April 2025. The outlooks were very consistent in their location and the observed flooding occurred essentially right in the locations where the outlooks showed the highest probabilities.

NOAA Weather Prediction Center Excessive Rainfall Outlooks all valid for 5-6 April 2025. The outlooks were very consistent in their location and the observed flooding occurred essentially right in the locations where the outlooks showed the highest probabilities.

NOAA Weather Prediction Center Excessive Rainfall Outlooks all valid for 5-6 April 2025. The outlooks were very consistent in their location and the observed flooding occurred essentially right in the locations where the outlooks showed the highest probabilities.

We often (rightly) see maps like these showing how good SPC convective outlooks are; let's also give some kudos to WPC for some outstanding excessive rainfall outlooks for this event. Especially impressive are the day 5 outlooks, giving advance notice of prolonged excessive rainfall and flood risk.

06.04.2025 22:00 — 👍 93    🔁 30    💬 1    📌 0

@mark-wx is following 20 prominent accounts