Alerts
You have (2) alert(s). Tap to see details.
| Extreme Heat Watch issued June 30 at 2:25PM EDT until July 3 at 8:00PM EDT by NWS Baltimore MD/Washington DC | ||
| NWS Baltimore MD/Washington DC | ||
| Category | Certainty | Severity |
| Met | Likely | Severe |
| Status | Urgency | Category |
| Actual | Future | Met |
| Effective | Ends | Expires |
| 06/30/2026 02:25 PM | 07/03/2026 08:00 PM | 06/30/2026 10:30 PM |
* WHAT...For the Heat Advisory, heat index values around 105
expected. For the Extreme Heat Watch, dangerously hot conditions
with heat index values of 110 to 115 possible.
* WHERE...Calvert and St. Marys Counties.
* WHEN...For the Heat Advisory, from 11 AM to 8 PM EDT Wednesday.
For the Extreme Heat Watch, from Thursday morning through Friday
evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Dangerous heat may linger into Saturday.
Prolonged extreme heat could impact power, water, and
transportation systems.
|
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| Heat Advisory issued June 30 at 2:25PM EDT until July 1 at 8:00PM EDT by NWS Baltimore MD/Washington DC | ||
| NWS Baltimore MD/Washington DC | ||
| Category | Certainty | Severity |
| Met | Likely | Moderate |
| Status | Urgency | Category |
| Actual | Expected | Met |
| Effective | Ends | Expires |
| 06/30/2026 02:25 PM | 07/01/2026 08:00 PM | 06/30/2026 10:30 PM |
* WHAT...For the Heat Advisory, heat index values around 105
expected. For the Extreme Heat Watch, dangerously hot conditions
with heat index values of 110 to 115 possible.
* WHERE...Calvert and St. Marys Counties.
* WHEN...For the Heat Advisory, from 11 AM to 8 PM EDT Wednesday.
For the Extreme Heat Watch, from Thursday morning through Friday
evening.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat and high humidity events. Hot temperatures and high
humidity may cause heat illnesses.
* ADDITIONAL DETAILS...Dangerous heat may linger into Saturday.
Prolonged extreme heat could impact power, water, and
transportation systems.
|
||
Hourly Forecast
Tue, 05:00 PM
SunnyWinds: 14 mph SE
Tue, 06:00 PM
Mostly ClearWinds: 15 mph SE
Tue, 07:00 PM
Mostly ClearWinds: 13 mph SE
Tue, 08:00 PM
Mostly ClearWinds: 13 mph S
Tue, 09:00 PM
Mostly ClearWinds: 14 mph S
Tue, 10:00 PM
Mostly ClearWinds: 14 mph S
Tue, 11:00 PM
Mostly ClearWinds: 13 mph S
Wed, 12:00 AM
Mostly ClearWinds: 13 mph S
Wed, 01:00 AM
Mostly ClearWinds: 13 mph S
Wed, 02:00 AM
Partly CloudyWinds: 12 mph S
Wed, 03:00 AM
Partly CloudyWinds: 12 mph S
Wed, 04:00 AM
Partly CloudyWinds: 10 mph S
Wed, 05:00 AM
Partly CloudyWinds: 10 mph SW
Wed, 06:00 AM
SunnyWinds: 10 mph SW
Wed, 07:00 AM
SunnyWinds: 12 mph SW
Wed, 08:00 AM
SunnyWinds: 8 mph SW
Wed, 09:00 AM
SunnyWinds: 8 mph SW
Wed, 10:00 AM
SunnyWinds: 8 mph S
Wed, 11:00 AM
SunnyWinds: 8 mph S
Wed, 12:00 PM
SunnyWinds: 8 mph S
Wed, 01:00 PM
SunnyWinds: 9 mph S
Wed, 02:00 PM
SunnyWinds: 9 mph S
Wed, 03:00 PM
SunnyWinds: 10 mph S
Wed, 04:00 PM
SunnyWinds: 13 mph SE
Coastal Waters Forecast
National Weather Service Baltimore MD/Washington DC
FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY.
Tidal Potomac River and Maryland portion of Chesapeake Bay. Forecasts of wave heights do not include effects of wind direction relative to tidal currents. Expect higher waves when winds are blowing against the tidal flow. Waves flat where waters are iced over. An area of high pressure will build near and south of the Mid- Atlantic through the week. A pop up shower or thunderstorm can't totally be ruled out near any bay or river breezes each afternoon, though most of the time should be dry until Friday when the high pressure begins to shift. The chance of strong thunderstorms will increase Friday into the weekend. Southerly channeling may require the issuance of Small Craft Advisories at times through Thursday.