Blue Flower

Flooding: Maryland

Current Hydrologic Alerts for Maryland provided by the National Weather Service - Advanced Hydrologic Prediction Service
Maryland - Current Hydrologic Observations - NWS AHPS

  1. Action (2.5 ft) - Alert - SLIM2 - Patuxent River at Solomons Island (IN MLLW) (Maryland)

    Flood Categories

    Primary (ft)

    • Action : 2.5 ft
    • Minor : 3 ft
    • Moderate : 4 ft
    • Major : 5 ft

    Flow (secondary) data is not currently enabled for this gauge.

    The forecast flood categories are the same as the observation flood categories.

    Gauge Data

    Observations

    Latest Observation Category: Normal
    Latest Observation: 2.48 ft
    Observation Time: May 26, 2022 12:12 AM -0400

    Forecasts

    Forecast Issued: May 25, 2022 10:54 PM -0400

    Recent

    Recent Category: Action
    Recent Projected Forecast Available: 2.5 ft
    Recent Projected Forecast Time: May 26, 2022 01:00 AM -0400

    Highest

    Highest Category: Action
    Highest Projected Forecast Available: 2.5 ft
    Highest Projected Forecast Time: May 28, 2022 02:00 AM -0400

    Last

    Last Category: Normal
    Last Projected Forecast Available: 0.8 ft
    Last Projected Forecast Time: May 28, 2022 09:00 PM -0400


  2. Action (2.85 ft) - Alert - SGSM2 - St. George Creek at Straits Point (IN MLLW) (Maryland)

    Flood Categories

    Primary (ft)

    • Action : 2.5 ft
    • Minor : 3 ft
    • Moderate : 3.5 ft
    • Major : 5 ft

    Flow (secondary) data is not currently enabled for this gauge.

    The forecast flood categories are the same as the observation flood categories.

    Gauge Data

    Observations

    Latest Observation Category: Action
    Latest Observation: 2.85 ft
    Observation Time: May 26, 2022 12:00 AM -0400

    Forecasts

    Forecast Issued: May 25, 2022 10:54 PM -0400

    Recent

    Recent Category: Action
    Recent Projected Forecast Available: 2.5 ft
    Recent Projected Forecast Time: May 26, 2022 01:00 AM -0400

    Highest

    Highest Category: Action
    Highest Projected Forecast Available: 2.7 ft
    Highest Projected Forecast Time: May 27, 2022 12:00 AM -0400

    Last

    Last Category: Normal
    Last Projected Forecast Available: 1.2 ft
    Last Projected Forecast Time: May 28, 2022 09:00 PM -0400


  3. Action (2.55 ft) - Alert - LWTV2 - Potomac River at Lewisetta (IN MLLW) (Virginia)

    Flood Categories

    Primary (ft)

    • Action : 2.5 ft
    • Minor : 3 ft
    • Moderate : 3.5 ft
    • Major : 4 ft

    Secondary (kcfs)

    • Action : Not Set
    • Minor : Not Set
    • Moderate : Not Set
    • Major : Not Set

    The forecast flood categories are the same as the observation flood categories.

    Gauge Data

    Observations

    Latest Observation Category: Action
    Latest Observation: 2.55 ft
    Latest Observation (Secondary): -999 kcfs
    Observation Time: May 26, 2022 12:12 AM -0400

    Forecasts

    Forecast Issued: May 25, 2022 09:09 PM -0400

    Recent

    Recent Category: Action
    Recent Projected Forecast Available: 2.5 ft
    Recent Projected Forecast Available (Secondary): -999 kcfs
    Recent Projected Forecast Time: May 26, 2022 01:00 AM -0400

    Highest

    Highest Category: Action
    Highest Projected Forecast Available: 2.7 ft
    Highest Projected Forecast Available (Secondary): -999 kcfs
    Highest Projected Forecast Time: May 27, 2022 12:00 AM -0400

    Last

    Last Category: Normal
    Last Projected Forecast Available: 2.3 ft
    Last Projected Forecast Available (Secondary): -999 kcfs
    Last Projected Forecast Time: May 29, 2022 12:00 AM -0400


  4. Action (3.7 ft) - Alert - HDGM2 - Chesapeake Bay at Havre de Grace (IN MLLW) (Maryland)

    Flood Categories

    Primary (ft)

    • Action : 3.5 ft
    • Minor : 4 ft
    • Moderate : 5.5 ft
    • Major : 7 ft

    Secondary (kcfs)

    • Action : Not Set
    • Minor : Not Set
    • Moderate : Not Set
    • Major : Not Set

    The forecast flood categories are the same as the observation flood categories.

    Gauge Data

    Observations

    Latest Observation Category: Normal
    Latest Observation: 1.17 ft
    Latest Observation (Secondary): -999 kcfs
    Observation Time: May 26, 2022 12:00 AM -0400

    Forecasts

    Forecast Issued: May 25, 2022 10:54 PM -0400

    Recent

    Recent Category: Normal
    Recent Projected Forecast Available: 1.2 ft
    Recent Projected Forecast Available (Secondary): -999 kcfs
    Recent Projected Forecast Time: May 26, 2022 01:00 AM -0400

    Highest

    Highest Category: Action
    Highest Projected Forecast Available: 3.7 ft
    Highest Projected Forecast Available (Secondary): -999 kcfs
    Highest Projected Forecast Time: May 27, 2022 09:00 AM -0400

    Last

    Last Category: Normal
    Last Projected Forecast Available: 2.4 ft
    Last Projected Forecast Available (Secondary): -999 kcfs
    Last Projected Forecast Time: May 28, 2022 09:00 PM -0400


    U.S. Geological Survey (USGS) Data and Site Info for Havre de Grace (IN MLLW): USGS ID: 01580620

  5. Action (3.1 ft) - Alert - CRSM2 - Chesapeake Bay above Little Annemessex River at Crisfield MD (MLLW) (Maryland)

    Flood Categories

    Primary (ft)

    • Action : 3 ft
    • Minor : 3.5 ft
    • Moderate : 4 ft
    • Major : 5 ft

    Secondary (kcfs)

    • Action : Not Set
    • Minor : Not Set
    • Moderate : Not Set
    • Major : Not Set

    The forecast flood categories are the same as the observation flood categories.

    Gauge Data

    Observations

    Latest Observation Category: Normal
    Latest Observation: 2.5 ft
    Latest Observation (Secondary): -999 kcfs
    Observation Time: May 26, 2022 12:00 AM -0400

    Forecasts

    Forecast Issued: May 25, 2022 09:09 PM -0400

    Recent

    Recent Category: Normal
    Recent Projected Forecast Available: 2.3 ft
    Recent Projected Forecast Available (Secondary): -999 kcfs
    Recent Projected Forecast Time: May 26, 2022 01:00 AM -0400

    Highest

    Highest Category: Action
    Highest Projected Forecast Available: 3.1 ft
    Highest Projected Forecast Available (Secondary): -999 kcfs
    Highest Projected Forecast Time: May 26, 2022 11:00 PM -0400

    Last

    Last Category: Normal
    Last Projected Forecast Available: 2.8 ft
    Last Projected Forecast Available (Secondary): -999 kcfs
    Last Projected Forecast Time: May 29, 2022 12:00 AM -0400


    U.S. Geological Survey (USGS) Data and Site Info for Little Annemessex River at Crisfield MD (MLLW): USGS ID: 01485755