Alert archive / Virginia / Flash Flood Warnings in 1999
Flash Flood Warning 43, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Sep 29, 1999, 10:30 PM EDT for Amherst County, 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 counties it named.
The facts
- Issued
- Sep 29, 1999, 10:30 PM EDT (02:30 UTC)
- Expired
- Sep 30, 1999, 4:00 AM EDT
- In force
- 6 hr
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Amherst County, VA
The radar
The Roanoke radar (KFCX), 119 km from the middle of the area, began a volume at 02:29 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 00:00Z, 2.5 hours before the alert went out and 55 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
- 191 J/kg
- Mixed-layer CIN
- -20 J/kg
- Mixed-layer LCL
- 720 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 200 m²/s²
- 0-3 km storm-relative helicity
- 241 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.2
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
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 Blacksburg, VA wrote its last area forecast discussion before this flash flood warning went out at Sep 29, 9:50 PM EDT, 40 minutes earlier.
Area forecast discussion, Sep 29, 9:50 PM EDT, 40 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BLACKSBURG VA 950 PM EDT WED SEP 29 1999 ...WIND EXPAND WIND ADVISORY TO INCLUDE FOOTHILL COUNTIES.... BUSY EVENING WITH TORNADOES...SEVERE AND FLOODING. KFCX SHOWING LAST SIGNIFICANT LINE OF TSRA/SHRA FROM EKN SW TO MT AIRY IN SURRY COUNTY NC...RIGHT ALONG FRONTAL BOUNDARY. -SHRA BEHIND THIS WILL LIKELY GET HUNG IN THE MOUNTAINS WITH THE NORTHWEST FLOW BEHIND THE FRONT AND DOWNSLOPING. AT 9 PM FRONT WAS LOCATED FROM EAST OF LWB TO HLX TO AROUND WILKESBORO. SO FAR WIND GUSTS BEHIND THE FRONT NOT TERRIBLY IMPRESSIVE IN THE LOWLANDS WITH SUSTAINED WINDS IN THE 10 TO 20 MPH RANGE WITH GUSTS TO 25 MPH. HIGHER ELEVATIONS THOUGH (GEV) IN THE 20S...WITH GUSTS TO 35 MPH. WITH STRONG CAA AIDING MIXING BEHIND THE FRONT...EXPECT TO SEE CRITERIA MET AT LEAST IN THE HIGHER TOWNS AND LOCATIONS INTO THURSDAY MORNING...SO WIND ADVISORY TO REMAIN IN PLACE. WITH STRONG CAA...ABUNDANT LOW LEVEL RH...AND UPSLOPE IN THE WEST WILL KEEP SKIES CLOUDY AND KEEP POPS FOR LIGHT SHOWERS THROUGH THE REMAINDER OF THE NIGHT. EAST OF THE BLUE RIDGE...DOWNSLOPING WILL CLEAR THINGS OUT QUICKLY BEHIND THE FRONT DURING THE PREDAWN HOURS. LINEAR EXTRAPOLATION OF H8 TEMPS AND MINS FROM THIS MORNING SUPPORT CURRENT LOWS...AND PERHAPS EVEN A BIT LOWER IN THE WEST. LOWS IN THE EAST ON TRACK. HAVE A GOOD ONE. .RNK VA...WIND ADVISORY FOR AREAS ALONG AND WEST OF BLUE RIDGE LATE TONIGHT AND THURSDAY MORNING AND FOR HIGHER ELEVATIONS OF THE FOOTHILLS. WV...WIND ADVISORY FOR SE WV LATE TONIGHT AND THURSDAY MORNING. NC...WIND ADVISORY FOR NRN MTNS AND HIGHER ELEVATIONS OF THE FOOTHILLS LATE TONIGHT AND THURSDAY MORNING. NOGUEIRA
In the hours before
Local storm report, Sep 29, 7:50 PM EDT, 2 hours 40 minutes before
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</html>Local storm report, Sep 29, 8:08 PM EDT, 2 hours 22 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
808 PM EDT WED SEP 29 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0730 PM LYNCHBURG VA FLOODING
09/29/99 CAMPBELL SEVERAL ROADS CLOSED DUE
TO HIGH
WATER...HOLLINSVILLE
RD...GRAVESMILL RD...
FOREST BROOK RD...OLD
GRAVES MILL RD...MAYFLOWER
DRIVE.Local storm report, Sep 29, 8:50 PM EDT, 1 hour 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
850 PM EDT WED SEP 29 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM MT AIRY NC TORNADO
09/29/99 SURRY 25-30 HOMES DAMAGED. 1
DESTROYED MOBILE HOME, 1
DAMAGED MOBILE HOME, 1
WOOD STRUCTURE HOME VERY
DAMAGED...ATTACHED CARPORT
DESTROYED AND FELL ON 4
CARS. STRIPPED EXTERNAL
PANEL OFF OF HOUSE. DEBRIS
FROM 3 HOMES FOUND 2
MILES AWAY FROM SOURCE.
TWISTED POWER POLES.
PMCLocal storm report, Sep 29, 8:50 PM EDT, 1 hour 40 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
850 PM EDT WED SEP 29 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM MT AIRY NC TORNADO
09/29/99 SURRY 25-30 HOMES DAMAGED. 1
DESTROYED MOBILE HOME, 1
DAMAGED MOBILE HOME, 1
WOOD STRUCTURE HOME VERY
DAMAGED...ATTACHED CARPORT
DESTROYED AND FELL ON 4
CARS. STRIPPED EXTERNAL
PANEL OFF OF HOUSE. DEBRIS
FROM 3 HOMES FOUND 2
MILES AWAY FROM SOURCE.
TWISTED POWER POLES.
PMCLocal storm report, Sep 29, 9:10 PM EDT, 1 hour 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
910 PM EDT WED SEP 29 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM WHITE SULPHUR SPGS WV WIND DAMAGE
09/29/99 GREENBRIER POWER LINES AND TREES
DOWN. TREES UPROOTED. A
LOT OF DEBRIS.
PMCLocal storm report, Sep 29, 9:10 PM EDT, 1 hour 20 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
910 PM EDT WED SEP 29 1999
TIME(EDT) .....CITY LOCATION..... STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
0630 PM WHITE SULPHUR SPGS WV WIND DAMAGE
09/29/99 GREENBRIER POWER LINES AND TREES
DOWN. TREES UPROOTED. A
LOT OF DEBRIS.
PMCThe office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 29, 9:20 PM EDT | Flash Flood Warning | RNK | Amherst | 3 hr |
| Sep 29, 11:42 PM EDT | Flash Flood Warning | RNK | Pittsylvania | 4 hr |
| Sep 30, 12:20 AM EDT | Flash Flood Warning | RNK | Appomattox | 4 hr |
| Sep 30, 12:42 AM EDT | Flash Flood Warning | RNK | Buckingham | 5 hr |
Nearby
Flash Flood Warnings in Virginia, 1999Every flash flood warning in 1999
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.