Alert archive / Maryland / River Flood Warnings in 2011
River Flood Warning 16, NWS Baltimore/Washington
NWS Baltimore/Washington issued this river flood warning at Mar 10, 2011, 2:46 PM EST for Montgomery County, Maryland. It took effect at Mar 10, 2011, 10:16 PM EST. It was in force for 6 hr.
The area
The counties it named.
The facts
- Issued
- Mar 10, 2011, 2:46 PM EST (19:46 UTC)
- In effect from
- Mar 10, 2011, 10:16 PM EST
- Expired
- Mar 11, 2011, 3:46 AM EST
- In force
- 6 hr
- Issued by
- NWS Baltimore/Washington
- Flood severity
- Minor
County Montgomery County, MD
The radar
The Sterling radar (KLWX), 30 km from the middle of the area, began a volume at 19:47 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The river
Written for the forecast point Seneca Creek at Dawsonville (DAWM2). The gauge peaked at 7.51 ft at Mar 10, 2011, 11:00 PM EST.
- Action stage
- 5 ft
- Minor stage
- 7.5 ft
- Moderate stage
- 11 ft
- Major stage
- 16 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01645000, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.
What forecasters said that day
The local office's own words before this river flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Baltimore/Washington wrote its last area forecast discussion before this river flood warning went out at Mar 10, 1:35 PM EST, 1 hour 11 minutes earlier.
Area forecast discussion, Mar 10, 1:35 PM EST, 1 hour 11 minutes before
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</html>Hazardous weather outlook, Mar 10, 1:32 PM EST, 1 hour 14 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 132 PM EST THU MAR 10 2011 ANZ530>543-DCZ001-MDZ006-007-011-013-014-016>018-VAZ052>057- 111000- CHESAPEAKE BAY NORTH OF POOLES ISLAND MD- CHESAPEAKE BAY FROM POOLES ISLAND TO SANDY POINT MD- CHESAPEAKE BAY FROM SANDY POINT TO NORTH BEACH MD- CHESAPEAKE BAY FROM NORTH BEACH TO DRUM POINT MD- CHESAPEAKE BAY FROM DRUM POINT MD TO SMITH POINT VA- TIDAL POTOMAC FROM KEY BRIDGE TO INDIAN HEAD MD- TIDAL POTOMAC FROM INDIAN HEAD TO COBB ISLAND MD- TIDAL POTOMAC FROM COBB ISLAND MD TO SMITH POINT VA- PATAPSCO RIVER INCLUDING BALTIMORE HARBOR- CHESTER RIVER TO QUEENSTOWN MD-EASTERN BAY- CHOPTANK RIVER TO CAMBRIDGE MD AND THE LITTLE CHOPTANK RIVER- PATUXENT RIVER TO BROOMES ISLAND MD- TANGIER SOUND AND THE INLAND WATERS SURROUNDING BLOODSWORTH ISLAND-DISTRICT OF COLUMBIA-NORTHERN BALTIMORE-HARFORD- SOUTHERN BALTIMORE-PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS- CALVERT-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE- 132 PM EST THU MAR 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE MARYLAND PORTION OF THE CHESAPEAKE BAY...TIDAL POTOMAC RIVER...AND ADJACENT COUNTIES IN CENTRAL MARYLAND AND NORTHERN VIRGINIA AS WELL AS THE DISTRICT OF COLUMBIA. .DAY ONE...THIS AFTERNOON AND TONIGHT A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 PM FOR SPOTSYLVANIA...STAFFORD AND KING GEORGE COUNTIES. IF THUNDERSTORMS HOLD TOGETHER...THIS MAY EVENTUALLY NEED TO BE EXPANDED INTO SOUTHERN MARYLAND. SCATTERED THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING WILL BE CAPABLE OF PRODUCING DAMAGING WIND GUSTS. THERE IS ALSO THE POSSIBILITY OF AN ISOLATED TORNADO. A COASTAL FLOOD WARNING IS IN EFFECT FOR AREAS ALONG THE TIDAL POTOMAC RIVER AND WESTERN SIDE OF THE CHESAPEAKE BAY THROUGH TONIGHT. A FLOOD WATCH IS IN EFFECT FOR THE OUTLOOK AREA THROUGH THIS EVENING. PLEASE REFER TO THE LATEST HAZARD MESSAGE /WBCFFALWX/ FOR FURTHER DETAILS. A GALE WARNING IS IN EFFECT FOR THE LOWER TIDAL POTOMAC RIVER AND MUCH OF THE MARYLAND CHESAPEAKE BAY THROUGH THIS EVENING. OTHERWISE...A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE WATERS THROUGH TONIGHT. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY A SMALL CRAFT ADVISORY IS IN EFFECT FOR THE MARYLAND CHESAPEAKE BAY AND TIDAL POTOMAC RIVER THROUGH FRIDAY MIDDAY. A COASTAL FLOOD ADVISORY COULD BE NECESSARY ON FRIDAY FOR AREAS ADJACENT TO THE TIDAL POTOMAC RIVER AND CHESAPEAKE BAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR SEVERE WEATHER THIS AFTERNOON. RAINFALL TOTALS ARE APPRECIATED TODAY. MDZ003>005-009-010-501-502-VAZ025>031-036>040-042-050-051-501>504- WVZ050>053-055-501>506-111000- WASHINGTON-FREDERICK MD-CARROLL-MONTGOMERY-HOWARD- EXTREME WESTERN ALLEGANY-CENTRAL AND EASTERN ALLEGANY-AUGUSTA- ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE-NELSON- ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-LOUDOUN-ORANGE-CULPEPER- NORTHERN FAUQUIER-SOUTHERN FAUQUIER-WESTERN HIGHLAND- EASTERN HIGHLAND-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON-HARDY- WESTERN GRANT-EASTERN GRANT-WESTERN MINERAL-EASTERN MINERAL- WESTERN PENDLETON-EASTERN PENDLETON- 132 PM EST THU MAR 10 2011 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EASTERN WEST VIRGINIA... NORTHERN AND CENTRAL VIRGINIA...AND CENTRAL AND WESTERN MARYLAND WITH THE EXCEPTION OF GARRETT COUNTY. .DAY ONE...THIS AFTERNOON AND TONIGHT A SEVERE THUNDERSTORM WATCH IS IN EFFECT UNTIL 8 PM FROM HIGHLAND COUNTY VIRGINIA EAST THROUGH THE CENTRAL SHENANDOAH VALLEY AND INTO PORTIONS OF THE NORTHERN VIRGINIA PIEDMONT. SCATTERED THUNDERSTORMS THIS AFTERNOON AND EARLY EVENING WILL BE CAPABLE OF PRODUCING DAMAGING WIND GUSTS. THERE IS ALSO THE POSSIBILITY OF AN ISOLATED TORNADO. A FLOOD WATCH IS IN EFFECT THROUGH THIS EVENING FOR THE OUTLOOK AREA. PLEASE REFER TO THE LATEST HAZARD MESSAGE /WBCFFALWX/ FOR FURTHER DETAILS. ACCUMULATING SNOWFALL IS EXPECTED ACROSS THE WESTERN SLOPES OF THE ALLEGHENY FRONT TONIGHT. A WINTER WEATHER ADVISORY MAY BE NEEDED. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY DEPENDING ON HOW MUCH RAINFALL IS RECEIVED TODAY...MAIN STEM RIVER FLOODING ACROSS THE POTOMAC...SHENANDOAH...AND RAPPAHANNOCK RIVERS IS POSSIBLE FRIDAY INTO SATURDAY. ACCUMULATING SNOWFALL IS EXPECTED ACROSS THE WESTERN SLOPES OF THE ALLEGHENY FRONT FRIDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE NEEDED FOR SEVERE WEATHER THIS AFTERNOON. RAINFALL TOTALS ARE APPRECIATED.
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 9, 9:26 PM EST | River Flood Warning | LWX | Spotsylvania, Stafford, City of Fredericksburg | 30 hr |
| Mar 9, 9:26 PM EST | River Flood Warning | LWX | Loudoun | 30 hr |
| Mar 10, 9:46 AM EST | Coastal Flood Warning | LWX | Arlington, Fairfax, King George, Stafford, City of Alexandria, City of Fairfax and 1 more | 17 hr |
| Mar 10, 1:06 PM EST | Gale Warning | LWX | 8 hr | |
| Mar 10, 1:06 PM EST | Small Craft Advisory | LWX | 37 hr | |
| Mar 10, 2:35 PM EST | Flash Flood Warning | LWX | Albemarle, Augusta, Nelson, City of Charlottesville, City of Staunton, City of Waynesboro | 4 hr |
| Mar 10, 2:57 PM EST | Special Weather Statement | LWX | Albemarle, Augusta, Nelson, City of Charlottesville, City of Staunton, City of Waynesboro | 48 min |
| Mar 10, 3:04 PM EST | Areal Flood Warning | LWX | Arlington, Fairfax, Prince William, Stafford, City of Alexandria, City of Fairfax and 1 more | 3 hr |
| Mar 10, 3:25 PM EST | Winter Weather Advisory | LWX | Highland | 24 hr |
| Mar 10, 3:58 PM EST | Special Marine Warning | LWX | 92 min | |
| Mar 10, 4:28 PM EST | Special Weather Statement | LWX | Culpeper, Orange, Spotsylvania, Stafford, City of Fredericksburg | 32 min |
| Mar 10, 4:34 PM EST | Special Weather Statement | LWX | Greene, Madison, Orange, Page, Rappahannock, City of Charlottesville | 26 min |
| Mar 10, 4:36 PM EST | Flash Flood Warning | LWX | Albemarle, Culpeper, Fauquier, Greene, King George, Madison and 5 more | 3 hr |
| Mar 10, 5:02 PM EST | Areal Flood Warning | LWX | Augusta, Culpeper, Greene, Madison, Page, Rappahannock and 2 more | 3 hr |
| Mar 10, 5:02 PM EST | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Madison, Page, Rappahannock, Warren | 58 min |
| Mar 10, 5:18 PM EST | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier, Madison, Orange, Spotsylvania, Stafford and 1 more | 57 min |
| Mar 10, 5:24 PM EST | Special Weather Statement | LWX | Clarke, Frederick, City of Winchester | 36 min |
| Mar 10, 5:26 PM EST | Areal Flood Warning | LWX | Clarke, Frederick, Page, Shenandoah, Warren, City of Winchester | 3 hr |
| Mar 10, 5:28 PM EST | Special Marine Warning | LWX | 92 min | |
| Mar 10, 5:34 PM EST | Severe Thunderstorm Warning | LWX | Clarke, Fauquier, Frederick, Loudoun, Warren, City of Winchester | 41 min |
| Mar 10, 5:48 PM EST | Flash Flood Warning | LWX | Arlington, Fairfax, Fauquier, King George, Loudoun, Prince William and 6 more | 4 hr |
| Mar 10, 6:04 PM EST | Special Weather Statement | LWX | Fauquier, Prince William, City of Manassas | 26 min |
| Mar 10, 6:07 PM EST | Flash Flood Warning | LWX | Loudoun | 3 hr |
| Mar 10, 6:10 PM EST | Severe Thunderstorm Warning | LWX | Culpeper, Fairfax, Fauquier, King George, Loudoun, Orange and 7 more | 65 min |
| Mar 10, 6:14 PM EST | Tornado Warning | LWX | Fauquier, Prince William | 31 min |
| Mar 10, 6:20 PM EST | Special Weather Statement | LWX | Loudoun | 25 min |
| Mar 10, 6:38 PM EST | Areal Flood Warning | LWX | Frederick | 3 hr |
| Mar 10, 6:58 PM EST | Tornado Warning | LWX | Fairfax, Loudoun, Prince William, City of Manassas, City of Manassas Park | 32 min |
| Mar 10, 12:37 PM EST | Areal Flood Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 6 hr |
| Mar 10, 4:06 PM EST | Areal Flood Warning | LWX | Anne Arundel, Montgomery, Prince George's | 4 hr |
| Mar 10, 6:06 PM EST | Special Weather Statement | LWX | Washington | 24 min |
| Mar 10, 6:29 PM EST | Flash Flood Warning | LWX | Anne Arundel, Baltimore, Carroll, Frederick, Harford, Howard and 2 more | 4 hr |
| Mar 9, 9:26 PM EST | River Flood Warning | LWX | Hampshire | 47 hr |
| Mar 10, 3:32 PM EST | Special Weather Statement | LWX | Hampshire, Hardy, Mineral | 28 min |
| Mar 10, 3:57 PM EST | Flash Flood Warning | LWX | Hampshire, Hardy | 3 hr |
Nearby
River Flood Warnings in Maryland, 2011Every river flood warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.