Alert archive / Virginia / Flash Flood Warnings in 1999
Flash Flood Warning 30, NWS Blacksburg, VA
NWS Blacksburg, VA issued this flash flood warning at Sep 7, 1999, 10:33 PM EDT for Charlotte County, Virginia. It was in force for 87 min. 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 7, 1999, 10:33 PM EDT (02:33 UTC)
- Expired
- Sep 8, 1999, 12:00 AM EDT
- In force
- 87 min
- Issued by
- NWS Blacksburg, VA
- Area
- Whole counties
County Charlotte County, VA
The radar
The Roanoke radar (KFCX), 143 km from the middle of the area, began a volume at 02:36 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, 2.6 hours before the alert went out and 77 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
- 126 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 1827 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 31 m²/s²
- 0-3 km storm-relative helicity
- 84 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KROA 080235 FFWRNK VAC037-080400- BULLETIN--IMMEDIATE BROADCAST REQUESTED FLOOD WARNING FOR SMALL CREEKS AND STREAMS NATIONAL WEATHER SERVICE BLACKSBURG VA 1033 PM EDT TUE SEP 7 1999 THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A * FLOOD WARNING FOR SMALL CREEKS AND STREAMS FOR... NORTHERN CHARLOTTE COUNTY IN SOUTH CENTRAL VIRGINIA. * UNTIL MIDNIGHT EDT. * AT 1025 PM... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED VERY HEAVY RAINFALL BETWEEN MADISONVILLE AND PHENIX. * STRONG THUNDERSTORMS WERE OVER SOUTHERN APPOMATTOX AND NORTHERN CHARLOTTE COUNTIES...MOVING TO THE EAST AT 15 MPH. RAIN FROM THESE STORMS IS EXPECTED TO RUNOFF INTO CUB CREEK. FLOODING ON STATE ROUTE 301 AND ST.ATE ROUTE 616 IS POSSIBLE IF CUB CREEK FLOODS. << CALL TO ACTION >> DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD! .END/DOC/AWS
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 7, 9:15 PM EDT, 1 hour 18 minutes earlier.
Area forecast discussion, Sep 7, 9:15 PM EDT, 1 hour 18 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BLACKSBURG VA 915 PM EDT TUE SEP 7 1999 AXIS OF SHRTWV AND SFC TROF STILL PASSING THROUGH CWA THIS EVENING. WITH ARND 70 SFC DEW POINTS AND CAPES FM JUST OVR 1000 AT RNK TO 2800 IN GSO...MORE AND MORE TSRA ARE DEVELOPING BETWEEN LYH AND DAN. SO WL KEEP CHC IN UNTIL MID. BY THEN ACTIVITY SHUD BE E OF THE FA. OVERALL HOWEVER...SOUNDINGS SHOW THAT ALOT OF DRY AIR HAS MOVED IN ABV 8H. STILL EXPECT FOG IN THE SE WV COUNTIES BUT SHUD BE SHALLOW COMPARED TO THIS MORNING AND SHUD BURN OFF QUICKLY TOMORROW. NO CHANGES PLANNED TO REST OF FCST. .RNK VA...NONE. WV...NONE. NC...NONE. AMS
The office that day
Everything else NWS Blacksburg, VA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 10:51 PM EDT | Severe Thunderstorm Warning | RNK | Halifax | 49 min |
| Sep 7, 11:40 PM EDT | Severe Thunderstorm Warning | RNK | Halifax | 35 min |
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.