Alert archive / Virginia / Flash Flood Warnings in 2001
Flash Flood Warning 4, NWS Baltimore/Washington
NWS Baltimore/Washington issued this flash flood warning at Mar 21, 2001, 9:07 PM EST for Frederick County, City of Winchester, Virginia. It was in force for 6 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
- Mar 21, 2001, 9:07 PM EST (02:07 UTC)
- Expired
- Mar 22, 2001, 3:00 AM EST
- In force
- 6 hr
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties City of Winchester, VA, Frederick County, VA
The radar
The Sterling radar (KLWX), 72 km from the middle of the area, began a volume at 02:07 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 2.1 hours before the alert went out and 80 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 437 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 287 m²/s²
- 0-3 km storm-relative helicity
- 264 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 220208 FFWLWX VAC069-840-220800- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE BALTIMORE-WASHINGTON 907 PM EST WED MAR 21 2001 THE NATIONAL WEATHER SERVICE IN STERLING VIRGINIA HAS ISSUED A * FLASH FLOOD WARNING FOR... CITY OF WINCHESTER IN NORTHWEST VIRGINIA FREDERICK COUNTY IN NORTHWEST VIRGINIA * UNTIL 300 AM EST * CREEKS AND SMALL STREAMS CONTINUE TO RISE WHICH HAVE CAUSED ADDITIONAL ROAD CLOSURES AS REPORTED BY COUNTY EMERGENCY MANAGERS. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. QUICKLY MOVE OUT OF AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING. IF WATER IS FLOWING ACROSS A ROADWAY TURN YOUR VEHICLE AROUND AND FIND AN ALTERNATE ROUTE. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. IF YOU ENCOUNTER WATER FLOWING ACROSS BRIDGES...DIPS...OR OTHER LOW SPOTS TURN AROUND AND FIND AN ALTERNATE ROUTE. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND. 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 UNKNOQWN DEPTH BY FOOT OR BY AUTOMOBILE. IF YOUR VEHICLE STALLS, ABANDON IT IMMEDIATELY AND SEEK HIGHER GROUND. LAT...LON 3914 7842 3905 7819 3926 7807 3939 7828 PAP/HTS
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 Mar 21, 3:55 PM EST, 5 hours 12 minutes earlier.
Area forecast discussion, Mar 21, 3:55 PM EST, 5 hours 12 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON 355 PM EST WED MAR 21 2001 WINTR WX ADVSRY AND WNTR STRM WARNING WILL BE ALLOWED TO EXPIRE WITH THIS PACKAGE. ACCUM SNOWS ON THE RIDGES SHOULD BE DONE FOR NOW. MAIN PRECIP SHIELD IS MOVING TO OUR N...BUT PLENTY OF SHRA STILL LEFT TO OUR S. WILL GO LIKELY TNT AS THESE SLIDE OVER. WRAPAROUND COULD STILL INSPIRE SOME SHRA IN THE AM THU...BUT THEN SOME CLEARING THURS AFTERNOON. GRADIENT HOLDS TNT AND THUR...SO DON/T SEE WINDS GOING ANYWHERE TNT AND THURS. WILL HOLD 20 TO 30 FOR BOTH PERIODS. WITH WET GROUND AND BREEZY CONDITIONS THERE HAVE BEEN SOME REPRTS OF SCATTERED POWR OUTAGES AND TREE DAMAGE TODAY. FRI LOOKS GOOD WITH HIGHS NEAR 60...65 IN CENTRL VA AND MSUNNY SKIES. THEN A CLIPPR COMES THRU SAT MORN. MAIN VORT PASSES TO OUR N SO DON/T EXPCT ANYTHING OTHER THAN 20 POP NEEDED...BUT TMPS WILL FALL. 850MB TMPS GO DOWN TO -12. SINCE THE COLD AIR TRIES TO COME IN DURING THE DAYTIME...THINK SAT WILL STILL BE SEASONABLE FOR TMPS...BUT BREEZY. THEN SUN...IT WILL BE COOL AND BREEZY. CHC OF SHSN IN THE MNTS BOTH DAYS. HIGH MOVES IF FOR MON INTO TUE...THEN WK COLD FRONT LATE TUE WITH NOT MUCH TO OFFER. RH AND ENERGY WILL PASS EVEN A BIT FURTHER TO OUR N. CS FCSTID = 78 DCA 43 50 35 60 / 70 40 0 0 BWI 41 48 32 60 / 70 50 0 0 MRB 40 47 32 60 / 70 30 0 0 IAD 41 50 33 60 / 70 40 0 0 CHO 40 55 33 65 / 70 60 0 0 HGR 40 47 32 60 / 70 30 0 0 NHK 41 50 33 60 / 70 40 0 0 .LWX... DC...NONE. MD...SMALL CRAFT ADVISORY FOR MD CHESAPEAKE BAY AND TIDAL POTOMAC. VA...NONE. WV...NONE.
Nearby
Flash Flood Warnings in Virginia, 2001Every flash flood warning in 2001
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.