Alert archive / Virginia / Flash Flood Warnings in 1998
Flash Flood Warning 68, NWS Morristown, TN
NWS Morristown, TN issued this flash flood warning at May 20, 1998, 9:03 PM EDT for Washington County, Virginia. It was in force for 3 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
- May 20, 1998, 9:03 PM EDT (01:03 UTC)
- Expired
- May 21, 1998, 12:05 AM EDT
- In force
- 3 hr
- Issued by
- NWS Morristown, TN
- Area
- Whole counties
County Washington County, VA
The nearest sounding before it
Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.1 hours before the alert went out and 198 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
- 1319 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 1463 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- -33 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KMRX 210102 FFWMRX VAC191-210405- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 903 PM EDT WED MAY 20 1998 THE NATIONAL WEATHER SERVICE IN KNOXVILLE/TRI-CITIES HAS ISSUED A * FLASH FLOOD WARNING FOR... WASHINGTON COUNTY IN SOUTHWESTERN VIRGINIA * UNTIL 1205 AM EDT * AT 902 PM EDT... NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT CLUSTERS OF THUNDERSTORMS WITH VERY HEAVY RAIN WERE LOCATED ACROSS MOST OF SOUTHEASTERN WASHINGTON COUNTY...MOVING SOUTHEAST AT 10 MPH. PERSONS LIVING ALONG THE LAUREL CREEK NEED TO BE ESPECIALLY CAUTIOUS. * EXCESSIVE RAINFALL AT THE RATE OF 2 INCHES PER HOUR WILL PRODUCE FLOODING BETWEEN ABINGDO|N AND DAMASCUS THROUGH 1205 AM EDT. BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE DANGER OF FLOODING.
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 Morristown, TN wrote its last area forecast discussion before this flash flood warning went out at May 20, 8:20 PM EDT, 43 minutes earlier.
Area forecast discussion, May 20, 8:20 PM EDT, 43 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN 820 PM EDT WED MAY 20 1998 THE LEADING EDGE OF THE MCS IS NOW ENTERING WISE COUNTY VA. ADAP CONTINUES TO SHOW SURFACE BASED LIFTED INDICES AROUND -10 ACROSS ALL OF SW VA AND NE TN. KMRX VWP SHOWS SWLY LOW LVL WINDS OF AROUND 15 KNOTS AND SO THERE IS CONTINUED INFLOW INTO THIS MCS...ALBEIT WK. FURTHER EAST...THERE HAVE BEEN ISOLATED PULSE SVR STORMS ACROSS MAINLY WASHINGTON COUNTY VA. BLV THESE HAVE BEEN FIRING ALONG AN OLD OUTFLOW BNDRY. THIS OLD BNDRY AND ITS INTERACTION WITH THE EWD-MOVING MCS WL CONTINUE THE CHCS FOR STRONG TO SVR CONVECTION ACROSS MAINLY SW VA AND EXTREME NE TN FOR THE NEXT FEW HOURS. ACROSS THE REMAINDER OF EAST TN AND SW NC THE CHCS FOR CONVECTION WL BE SLIM TNT GIVEN THE CAP. THE TEMPS LOOK FINE. MB
In the hours before
Local storm report, May 20, 8:40 PM EDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
840 PM EDT WED MAY 20 1998
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
705 PM 3 E ABINGDON VA 1.00 INCH HAIL
05/20/98 WASHINGTON QUARTER SIZE HAIL ON WATAUGA
ROAD OFF ROUTE 58. REPORTED
BY SHERIFFS DISPATCH.
FERRELLLocal storm report, May 20, 8:40 PM EDT, 23 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE KNOXVILLE/TRI-CITIES TN
840 PM EDT WED MAY 20 1998
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
705 PM 3 E ABINGDON VA 1.00 INCH HAIL
05/20/98 WASHINGTON QUARTER SIZE HAIL ON WATAUGA
ROAD OFF ROUTE 58. REPORTED
BY SHERIFFS DISPATCH.
FERRELLThe office that day
Everything else NWS Morristown, TN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 8:02 PM EDT | Severe Thunderstorm Warning | MRX | Wise | 48 min |
| May 20, 8:04 PM EDT | Severe Thunderstorm Warning | MRX | Washington | 51 min |
| May 20, 8:54 PM EDT | Severe Thunderstorm Warning | MRX | Washington | 46 min |
Nearby
Flash Flood Warnings in Virginia, 1998Every flash flood warning in 1998
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.