000
NOUS41 KLWX 301441
PNSLWX
DCZ001-MDZ001-003>006-008-011-013-014-016>018-501>508-VAZ025>031-
036>040-050>057-501>508-WVZ050>053-055-501>506-310245-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1041 AM EDT SAT OCT 30 2021

...HISTORIC COASTAL FLOODING...

A STRONG AREA OF LOW PRESSURE AND ASSOCIATED PERSISTENT ONSHORE 
WINDS RESULTED IN A HISTORIC COASTAL FLOOD EVENT FOR MUCH OF THE 
CHESAPEAKE BAY AND TIDAL POTOMAC RIVER REGION OVER THE LAST COUPLE 
OF DAYS. FOR MANY AREAS, THIS WAS THE WORST TIDAL FLOODING SINCE 
ISABEL IN SEPTEMBER OF 2003.

BELOW IS A LIST OF PEAK FLOOD STAGES OBSERVED SINCE THURSDAY. PLEASE 
NOTE THAT THIS DATA IS CONSIDERED PRELIMINARY PENDING REVIEW AND 
SUBSEQUENT ENTRY AND CERTIFICATION IN STORM DATA. ADDITIONALLY, A 
FEW GAUGES (DAHLGREN, STRAITS POINT, AND HAVRE DE GRACE) HAVE A 
SHORTER PERIOD OF RECORD AND WERE NOT AROUND DURING ISABEL OR OTHER 
HISTORIC FLOODING EVENTS WHICH ARE LISTED BELOW FOR REFERENCE.

SITE                   PEAK STAGE (CREST) SINCE THU 10/28 DC/SW 
DC/SW WATERFRONT    MAJOR    (7.12' MLLW AT 3:24-3:30PM FRI 10/29) 
DC/GEORGETOWN      MODERATE  (8.19' MLLW AT 3:24PM FRI 10/29) 
ALEXANDRIA DOCK    MODERATE  (5.99' NADV2 AT 3:24-3:30PM FRI 10/29) 
DAHLGREN           MODERATE  (5.64' MLLW AT 11:12-11:18AM FRI 10/29) 
STRAITS POINT      MODERATE  (4.90' MLLW AT 10:00PM FRI 10/29) 
SOLOMONS ISLAND    MODERATE  (4.82' MLLW AT 10:00PM FRI 10/29) 
ANNAPOLIS          MODERATE  (4.90' MLLW AT 11:42-11:48PM FRI 10/29) 
BALTIMORE           MINOR      (4.92' MLLW AT 1:30AM SAT 10/30) 
HAVRE DE GRACE     MODERATE  (5.59' MLLW AT 3:24-3:30AM SAT 10/30) 
CHESAPEAKE CITY     MINOR    (5.63' MLLW AT 8:48-8:54PM FRI 10/29)

HISTORICAL RANK

DC/SW WATERFRONT 
1. 11.05' MLLW ON 10/17/1942
2. 10.55' MLLW ON 03/19/1936
3. 10.25' MLLW ON 09/19/2003
4. 9.95' MLLW ON 08/23/1933
5. 8.68' MLLW ON 06/24/1972

DC/GEORGETOWN
1. 17.72' MLLW ON 10/17/1942
2. 17.30' MLLW ON 03/19/1936
3. 15.45' MLLW ON 06/24/1972
4. 14.30' MLLW ON 04/28/1937
5. 14.05' MLLW ON 11/26/1877

ALEXANDRIA DOCK
1. 8.66' NADV2 ON 09/19/2003
2. 7.50' NADV2 ON 03/19/1936
3. *** 5.99' NADV2 ON 10/29/2019 ***
4. 5.06' NADV2 ON 04/16/2011
5. 5.04' NADV2 ON 09/18/2018

DAHLGREN
1. *** 5.64' MLLW ON 10/29/2021 *** 
2. 4.99' MLLW ON 09/10/2018
3. 4.92' MLLW ON 09/09/2018
4. 4.65' MLLW ON 10/12/2019
5. 4.49' MLLW ON 03/07/2018

STRAITS POINT 
1. *** 4.90' MLLW ON 10/29/2021 *** 
2. 4.56' MLLW ON 09/10/2018 
3. 4.48' MLLW ON 10/12/2019 
4. 4.39' MLLW ON 03/07/2018 
5. 4.35' MLLW ON 10/12/2019

SOLOMONS ISLAND
1. *** 4.82" MLLW ON 10/29/2021 ***
2. 4.45' MLLW ON 09/19/2003
3. 4.41' MLLW ON 09/01/2006
4. 4.25' MLLW ON 10/12/2019
5. 4.25' MLLW ON 08/13/1955

ANNAPOLIS 
1. 7.16' MLLW ON 09/19/2003
2. 6.17' MLLW ON 08/23/1933
3. 4.98' MLLW ON 08/13/1955
4. *** 4.90' MLLW ON 10/29/2021 ***
5. 4.84' MLLW ON 09/07/1996

BALTIMORE 
1. 8.15' MLLW ON 09/19/2003
2. 7.69' MLLW ON 08/23/1933
3. 6.39' MLLW ON 08/13/1955
4. 5.50' MLLW ON 10/15/1954
5. 5.30' MLLW ON 08/04/1915

HAVRE DE GRACE 
1. 5.84' MLLW ON 10/30/2012
2. 5.65' MLLW ON 04/30/2020
3. *** 5.60' MLLW ON 10/29/2021 ***
4. 5.50' MLLW ON 11/01/2019
5. 5.50' MLLW ON 10/04/2014

CHESAPEAKE CITY
1. 8.67' MLLW ON 09/19/2003 
2. 6.86' MLLW ON 04/17/2011
3. 6.53' MLLW ON 12/21/2021



$$

DHOF/CPB
687 
NOUS41 KLWX 301441
PNSLWX
DCZ001-MDZ001-003>006-008-011-013-014-016>018-501>508-VAZ025>031-
036>040-050>057-501>508-WVZ050>053-055-501>506-310245-

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1041 AM EDT SAT OCT 30 2021

...HISTORIC COASTAL FLOODING...

A STRONG AREA OF LOW PRESSURE AND ASSOCIATED PERSISTENT ONSHORE 
WINDS RESULTED IN A HISTORIC COASTAL FLOOD EVENT FOR MUCH OF THE 
CHESAPEAKE BAY AND TIDAL POTOMAC RIVER REGION OVER THE LAST COUPLE 
OF DAYS. FOR MANY AREAS, THIS WAS THE WORST TIDAL FLOODING SINCE 
ISABEL IN SEPTEMBER OF 2003.

BELOW IS A LIST OF PEAK FLOOD STAGES OBSERVED SINCE THURSDAY. PLEASE 
NOTE THAT THIS DATA IS CONSIDERED PRELIMINARY PENDING REVIEW AND 
SUBSEQUENT ENTRY AND CERTIFICATION IN STORM DATA. ADDITIONALLY, A 
FEW GAUGES (DAHLGREN, STRAITS POINT, AND HAVRE DE GRACE) HAVE A 
SHORTER PERIOD OF RECORD AND WERE NOT AROUND DURING ISABEL OR OTHER 
HISTORIC FLOODING EVENTS WHICH ARE LISTED BELOW FOR REFERENCE.

SITE                   PEAK STAGE (CREST) SINCE THU 10/28 DC/SW 
DC/SW WATERFRONT    MAJOR    (7.12' MLLW AT 3:24-3:30PM FRI 10/29) 
DC/GEORGETOWN      MODERATE  (8.19' MLLW AT 3:24PM FRI 10/29) 
ALEXANDRIA DOCK    MODERATE  (5.99' NADV2 AT 3:24-3:30PM FRI 10/29) 
DAHLGREN           MODERATE  (5.64' MLLW AT 11:12-11:18AM FRI 10/29) 
STRAITS POINT      MODERATE  (4.90' MLLW AT 10:00PM FRI 10/29) 
SOLOMONS ISLAND    MODERATE  (4.82' MLLW AT 10:00PM FRI 10/29) 
ANNAPOLIS          MODERATE  (4.90' MLLW AT 11:42-11:48PM FRI 10/29) 
BALTIMORE           MINOR      (4.92' MLLW AT 1:30AM SAT 10/30) 
HAVRE DE GRACE     MODERATE  (5.59' MLLW AT 3:24-3:30AM SAT 10/30) 
CHESAPEAKE CITY     MINOR    (5.63' MLLW AT 8:48-8:54PM FRI 10/29)

HISTORICAL RANK

DC/SW WATERFRONT 
1. 11.05' MLLW ON 10/17/1942
2. 10.55' MLLW ON 03/19/1936
3. 10.25' MLLW ON 09/19/2003
4. 9.95' MLLW ON 08/23/1933
5. 8.68' MLLW ON 06/24/1972

DC/GEORGETOWN
1. 17.72' MLLW ON 10/17/1942
2. 17.30' MLLW ON 03/19/1936
3. 15.45' MLLW ON 06/24/1972
4. 14.30' MLLW ON 04/28/1937
5. 14.05' MLLW ON 11/26/1877

ALEXANDRIA DOCK
1. 8.66' NADV2 ON 09/19/2003
2. 7.50' NADV2 ON 03/19/1936
3. *** 5.99' NADV2 ON 10/29/2019 ***
4. 5.06' NADV2 ON 04/16/2011
5. 5.04' NADV2 ON 09/18/2018

DAHLGREN
1. *** 5.64' MLLW ON 10/29/2021 *** 
2. 4.99' MLLW ON 09/10/2018
3. 4.92' MLLW ON 09/09/2018
4. 4.65' MLLW ON 10/12/2019
5. 4.49' MLLW ON 03/07/2018

STRAITS POINT 
1. *** 4.90' MLLW ON 10/29/2021 *** 
2. 4.56' MLLW ON 09/10/2018 
3. 4.48' MLLW ON 10/12/2019 
4. 4.39' MLLW ON 03/07/2018 
5. 4.35' MLLW ON 10/12/2019

SOLOMONS ISLAND
1. *** 4.82" MLLW ON 10/29/2021 ***
2. 4.45' MLLW ON 09/19/2003
3. 4.41' MLLW ON 09/01/2006
4. 4.25' MLLW ON 10/12/2019
5. 4.25' MLLW ON 08/13/1955

ANNAPOLIS 
1. 7.16' MLLW ON 09/19/2003
2. 6.17' MLLW ON 08/23/1933
3. 4.98' MLLW ON 08/13/1955
4. *** 4.90' MLLW ON 10/29/2021 ***
5. 4.84' MLLW ON 09/07/1996

BALTIMORE 
1. 8.15' MLLW ON 09/19/2003
2. 7.69' MLLW ON 08/23/1933
3. 6.39' MLLW ON 08/13/1955
4. 5.50' MLLW ON 10/15/1954
5. 5.30' MLLW ON 08/04/1915

HAVRE DE GRACE 
1. 5.84' MLLW ON 10/30/2012
2. 5.65' MLLW ON 04/30/2020
3. *** 5.60' MLLW ON 10/29/2021 ***
4. 5.50' MLLW ON 11/01/2019
5. 5.50' MLLW ON 10/04/2014

CHESAPEAKE CITY
1. 8.67' MLLW ON 09/19/2003 
2. 6.86' MLLW ON 04/17/2011
3. 6.53' MLLW ON 12/21/2021



$$

DHOF/CPB

  US Dept of Commerce
  National Oceanic and Atmospheric Administration
  National Weather Service
  1325 East West Highway
  Silver Spring, MD 20910
  Page Author: NWSChat Administration Team
Disclaimer
Information Quality
Credits
Glossary
Privacy Policy  
Freedom of Information Act (FOIA)  
About Us  
Career Opportunities