Alert archive / Virginia / Flash Flood Warnings in 2005
Flash Flood Warning 50, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Nov 29, 2005, 10:04 AM EST for Nelson County, Virginia. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Nov 29, 2005, 10:04 AM EST (15:04 UTC)
- Expired
- Nov 29, 2005, 2:00 PM EST
- In force
- 4 hr
- Issued by
- NWS Baltimore/Washington
- Area
- Counties, with a storm outline in the text
County Nelson County, VA
The radar
The Roanoke radar (KFCX), 149 km from the middle of the area, began a volume at 15:06 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 nearest sounding before it
Roanoke, VA (KRNK), launched 12:00Z, 3.1 hours before the alert went out and 85 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 137 J/kg
- Mixed-layer CIN
- -8 J/kg
- Mixed-layer LCL
- 539 m above ground
- 0-6 km bulk shear
- 66 kt
- 0-1 km storm-relative helicity
- 343 m²/s²
- 0-3 km storm-relative helicity
- 426 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
What forecasters said that day
The local office's own words before this flash 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 flash flood warning went out at Nov 29, 6:50 AM EST, 3 hours 14 minutes earlier.
Area forecast discussion, Nov 29, 6:50 AM EST, 3 hours 14 minutes before
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</html>Hazardous weather outlook, Nov 29, 9:54 AM EST, 10 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 954 AM EST TUE NOV 29 2005 ANZ530>537-DCZ001-MDZ002>007-009>011-013-014-016>018-VAZ021- 025>031-036>042-050>057-WVZ048>055-301000- 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- DISTRICT OF COLUMBIA-ALLEGANY-WASHINGTON-FREDERICK MD-CARROLL- NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE- PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-HIGHLAND- AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE- NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-FAUQUIER-LOUDOUN- ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-GRANT-MINERAL-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON- PENDLETON-HARDY- 954 AM EST TUE NOV 29 2005 THIS HAZARDOUS WEATHER OUTLOOK IS FOR MARYLAND WEST OF THE EASTERN SHORE INCLUDING THE CHESAPEAKE BAY AND EAST OF GARRETT COUNTY...EASTERN WEST VIRGINIA...NORTHERN AND CENTRAL VIRGINIA... WASHINGTON DC AND THE TIDAL POTOMAC RIVER. .DAY ONE...TODAY AND TONIGHT A COLD FRONT WILL APPROACH FROM THE WEST TODAY. WIDESPREAD SHOWERS AND A FEW THUNDERSTORMS ARE EXPECTED ACROSS THE OUTLOOK AREA. THE STRONGEST OF THESE STORMS COULD CONTAIN DAMAGING WIND GUSTS OF 60 MPH OR HIGHER. BRIEF HEAVY RAIN WILL ALSO OCCUR...POSSIBLY CAUSING SOME PONDING WATER PROBLEMS. GUSTY WINDS OF 30 TO 35 MPH WILL OCCUR TODAY AND EARLY THIS EVENING. MOTORISTS...ESPECIALLY ON EAST TO WEST ROADS...SHOULD USE CAUTION. A SMALL CRAFT ADVISORY REMAINS IN EFFECT ON THE TIDAL POTOMAC AND CHESAPEAKE BAY TODAY AND TONIGHT. MINOR COASTAL FLOODING WILL BE POSSIBLE AT TIMES OF HIGH TIDE THIS AFTERNOON AND TONIGHT. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY .SPOTTER INFORMATION STATEMENT... GUYER
In the hours before
Special weather statement, Nov 29, 5:27 AM EST, 4 hours 37 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC 527 AM EST TUE NOV 29 2005 DCZ001-MDZ002>007-009>011-013-014-016>018-VAZ021-025>031-036>042- 050>057-WVZ048>055-291700- DISTRICT OF COLUMBIA-ALLEGANY-WASHINGTON-FREDERICK MD-CARROLL- NORTHERN BALTIMORE-HARFORD-MONTGOMERY-HOWARD-SOUTHERN BALTIMORE- PRINCE GEORGES-ANNE ARUNDEL-CHARLES-ST. MARYS-CALVERT-HIGHLAND- AUGUSTA-ROCKINGHAM-SHENANDOAH-FREDERICK VA-PAGE-WARREN-CLARKE- NELSON-ALBEMARLE-GREENE-MADISON-RAPPAHANNOCK-FAUQUIER-LOUDOUN- ORANGE-CULPEPER-PRINCE WILLIAM/MANASSAS/MANASSAS PARK-FAIRFAX- ARLINGTON/FALLS CHURCH/ALEXANDRIA-STAFFORD-SPOTSYLVANIA- KING GEORGE-GRANT-MINERAL-HAMPSHIRE-MORGAN-BERKELEY-JEFFERSON- PENDLETON-HARDY- INCLUDING THE CITIES OF...WASHINGTON...CUMBERLAND...HAGERSTOWN... FREDERICK...WESTMINSTER...GAITHERSBURG...COLUMBIA...BALTIMORE... ANNAPOLIS...WALDORF...ST MARYS CITY...STAUNTON...WAYNESBORO... HARRISONBURG...WINCHESTER...FRONT ROYAL...CHARLOTTESVILLE... LEESBURG...CULPEPER...MANASSAS...MANASSAS PARK...FAIRFAX... ALEXANDRIA...FALLS CHURCH...FREDERICKSBURG...BAYARD... PETERSBURG...KEYSER...MARTINSBURG...CHARLES TOWN 527 AM EST TUE NOV 29 2005 ...STRONG WINDS AND A FEW THUNDERSTORMS TODAY... AS A COLD FRONT APPROACHES THE REGION FROM THE WEST...A LINE OF THUNDERSTORMS MAY DEVELOP THIS AFTERNOON ACROSS CENTRAL AND NORTHERN VIRGINIA AND INTO THE DC AND BALTIMORE REGIONS. A FEW OF THESE STORMS COULD REACH SEVERE LIMITS WITH A THREAT FOR WIND GUSTS OF 60 MPH OR HIGHER. THE THREAT FOR AFTERNOON SEVERE STORMS WILL MAINLY BE FROM WEST OF WASHINGTON DC ALONG I-66...AND SOUTH THROUGH THE CENTRAL SHENANDOAH VALLEY AND CHARLOTTESVILLE AREAS. IN ADDITION...BRIEF HEAVY RAIN WILL BE POSSIBLE AT TIMES TODAY AND EARLY THIS EVENING. PONDING WATER AND MINOR FLOODING OF POOR DRAINAGE AREAS WILL BE POSSIBLE. ACROSS THE ENTIRE AREA...GUSTY WINDS OF 30 TO 35 MPH WILL BE POSSIBLE TODAY AND EARLY THIS EVENING. MOTORISTS...ESPECIALLY ON EAST TO WEST ROADS...SHOULD USE CAUTION.
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 29, 10:12 AM EST | Flash Flood Warning | LWX | Augusta | 4 hr |
| Nov 29, 6:12 PM EST | Severe Thunderstorm Warning | LWX | Washington | 48 min |
| Nov 29, 6:31 PM EST | Severe Thunderstorm Warning | LWX | Frederick | 59 min |
| Nov 29, 6:51 PM EST | Flash Flood Warning | LWX | Washington | 3 hr |
| Nov 29, 4:42 PM EST | Flash Flood Warning | LWX | Hardy | 2 hr |
| Nov 29, 5:32 PM EST | Severe Thunderstorm Warning | LWX | Hampshire | 17 min |
| Nov 29, 5:40 PM EST | Flash Flood Warning | LWX | Morgan | 3 hr |
Nearby
Flash Flood Warnings in Virginia, 2005Every flash flood warning in 2005
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.