Alert archive / Virginia / Flash Flood Warnings in 2000
Flash Flood Warning 29, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Sep 2, 2000, 4:45 AM EDT for Augusta County, Nelson County, Virginia. It was in force for 2 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Sep 2, 2000, 4:45 AM EDT (08:45 UTC)
- Expired
- Sep 2, 2000, 6:45 AM EDT
- In force
- 2 hr
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Augusta County, VA, Nelson County, VA
The nearest sounding before it
Roanoke, VA (KRNK), launched 00:00Z, 8.8 hours before the alert went out and 86 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
- 426 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 813 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 30 m²/s²
- 0-3 km storm-relative helicity
- 54 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WGUS51 KLWX 020845 FFWLWX VAC015-125-021045- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON 445 AM EDT SAT SEP 2 2000 THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS EXTENDED A * FLASH FLOOD WARNING FOR... NELSON COUNTY IN CENTRAL VIRGINIA AUGUSTA COUNTY IN WESTERN VIRGINIA * UNTIL 645 AM EDT * AT 440 AM EDT...WEATHER SERVICE DOPPLER RADAR INDICATED THUNDERSTORMS WITH VERY HEAVY RAINFALL ACROSS CENTRAL AND WESTERN NELSON COUNTY... AND IN THE FAR SOUTHERN PORTION OF AUGUSTA COUNTY. THESE STORMS ARE MOVING VERY SLOWLY TO THE NORTH. AUTOMATED RAIN GAGES OVER WESTERN NELSON COUNTY HAVE REPORTED OVER 3.0 INCHES OF RAINFALL SINCE 100 AM EDT. DOPPLER RADAR ESTIMATES THAT SOME AREAS OF WESTERN NELSON COUNTY AND EXTREME SOUTHERN AUGUSTA COUNTY MAY HAVE RECEIVED OVER 5.00 INCHES OF RAIN DURING THAT SAME TIME SPAN. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. LAT...LON 3777 7916 3778 7893 3803 7899 3810 7912
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 Sep 2, 3:10 AM EDT, 1 hour 35 minutes earlier.
Area forecast discussion, Sep 2, 3:10 AM EDT, 1 hour 35 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON 310 AM EDT SAT SEP 2 2000 KLWX RADAR SHOWING SCATTERED SHOWERS AND THUNDERSTORMS OVER SOUTHWESTERN SECTIONS OF THE CWA. SLOW MOVING PRECIP RESULTING IN RADAR ESTIMATES OF UP TO 4 INCHES OVER THE PAST 3 HOURS IN ISOLATED LOCATIONS. BLOW OFF CLOUDINESS MOVING ALONG AND WEST OF THE BLUE RIDGE.. WHILE AREAS TO THE EAST OF THE RIDGE ARE PARTLY CLOUDY AT TIME. MODELS ALL IN GENERAL AGREEMENT WITH OVERALL PATTERN FOR NEXT COUPLE OF DAYS. WV LOOP SHOWING 2 DISTINCT CIRCULATIONS... ONE OVER KENTUCKY AND ANOTHER OVER GEORGIA. THIS UPPER PATTERN TO REMAIN IN PLACE THROUGH THE DAY ON SUNDAY... WITH AVN INDICATING THAT SYSTEM MAY FINALLY OPEN UP AND MOVE TO THE EAST OF US BY LATE MONDAY. INVERTED SURFACE TROUGH TO REMAIN OVER THE WESTERN SECTIONS OF THE CWA TODAY AND TOMORROW... WITH UPPER TROUGH MOVING OVER THE AREA AS WELL. VERY WARM ADN HUMID AIR MASS IN PLACE... WITH SURFACE DEW POINTS IN THE LOWER TO MIDDLE 70S AND PW VALUES BETWEEN 1.75 AND 2.00 INCHES. EXPECT PRECIP TO REMAIN RATHER SCATTERED OVER THE NEXT COUPLE OF DAYS.. WITH HIGHER POPS IN THE WEST DUE TO PROXIMITY TO THE SURFACE TROUGH AND ADDED LIFT FROM WEAK UPSLOPE FLOW. FORECAST SOUNDINGS INDICATE VERY WEAK STEERING FLOW... DROPPING AS LOW AS 6 OR 7 KNOTS FOR TOMORROW. STORMS THAT DO DEVELOP SHOULD BE SLOW MOVERS AND COULD PRODUCE SOME HEAVY AT TIMES. HAVE COORD WITH RNK.. AND DO NOT PLAN TO ISSUE FFA AT TIME DUE TO SCATTERED NATURE OF PRECIP. SOUTHWESTERN SECTIONS OF CWA WILL NEED TO BE MONITORED HOWEVER.. AVN BRINGS SURFACE FRONT THROUGH THE AREA DURING THE AFTERNOON ON MON... AND DEVELOPS A LITTLE WAVE ALONG THE FRONT AS IT PASSES THROUGH. WILL CONTINUE WITH HIGH CHANCE POPS FOR MON IN THE EXTENDED... BUT POPS MAY END UP BEING RAISE IF THIS SCENARIO PLAYS OUT. TEMPS GETTING A RATHER WARM START.. WITH FORECAST READINGS AT SUNRISE IN THE LOWER 70S. MOST PLACES WERE IN THE MID OR UPPER 80S ON FRI... AND AM NOT EXPECTING TO MUCH DIFFERENCE TODAY. MAY CUT A DEGREE OR 2 OFF FROM YESTERDAY'S READINGS ALONG THE BLUE RIDGE DUE TO DEBRIS CLOUDINESS. COMPR OMISE OF FWC/FAN TEMPS USED IN LATER PERIODS. .LWX... DC...NONE. MD...NONE. VA...NONE. WV...NONE. MARGRAF!
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 2, 2:45 AM EDT | Flash Flood Warning | LWX | Augusta, Nelson | 2 hr |
| Sep 2, 6:30 PM EDT | Flash Flood Warning | LWX | Albemarle, Nelson, City of Charlottesville | 2 hr |
Nearby
Flash Flood Warnings in Virginia, 2000Every flash flood warning in 2000
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.