Alert archive / Virginia / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 256, NWS Blacksburg, VA

July 22, 1998Franklin County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 22, 1998, 4:06 PM EDT for Franklin County, Virginia. It was in force for 34 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
Jul 22, 1998, 4:06 PM EDT (20:06 UTC)
Expired
Jul 22, 1998, 4:40 PM EDT
In force
34 min
Issued by
NWS Blacksburg, VA
Area
Whole counties

County Franklin County, VA

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 8.1 hours before the alert went out and 41 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.

Skew-T log-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 1998-07-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 219 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 1998-07-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -63 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
219 J/kg
Mixed-layer CIN
-86 J/kg
Mixed-layer LCL
1138 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
-63 m²/s²
0-3 km storm-relative helicity
14 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

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 severe thunderstorm 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 severe thunderstorm warning went out at Jul 22, 2:32 PM EDT, 1 hour 34 minutes earlier.

Area forecast discussion, Jul 22, 2:32 PM EDT, 1 hour 34 minutes before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BLACKSBURG VA
155 PM EDT TUE JUL 21 1998

SHRA/TS MOVING ACRS WRN FA ATTM. SHUD CONTINUE OVR MTNS RMDR AFTN
AND LAST INTO THE EVE OVR PIEDMONT. ONCE GONE NEXT PRBLM IS IF/WHEN
MCS AFFECTS FA OVRNGT. FNT SAGS S TO JUST N OF FA BY 00Z FRI SO MORE
TS/SHRA THU AFTN/EVE. FNT MOVS THRU FRI WITH RTRN TO MORE NML
TEMPS/CHC ISOLD ACTIVITY OVER PIEDMONT INTO SAT.

ROA 68/92/68/90 3441
RNK 65/87/64/86 3441
LYH 70/93/71/90 3442
DAN 73/95/73/93 3332
BLF 66/86/64/82 3442
LWB 63/84/62/80 3441
BOO 65/85/64/83 3333

MG

In the hours before

Local storm report, Jul 22, 3:30 PM EDT, 36 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
330 PM EDT WED JUL 22 1998

TIME (EDT) .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

315 PM     SALEM                     VA   WIND DAMAGE
07/22/98   ROANOKE                        POWER LINES DOWN AND TREES
                                          THROUGH ROOF OF A HOUSE.
                                          REPORTED BY SALEM FIRE DEPART-
                                          MENT.

322 PM    BLACKSBURG                 VA   60 MPH WIND GUST
07/22/98  MONTGOMERY                      RECORDED AT THE BLACKSBURG
                                          NATIONAL WEATHER SERVICE

SJK
Local storm report, Jul 22, 4:06 PM EDT, 0 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
406 PM EDT WED JUL 22 1998

TIME (EDT) .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

328 PM     BLACKSBURG                VA   WIND DAMAGE
07/22/98   MONTGOMERY                     TWO SINGLE ENGINE PLANES
                                          FLIPPED OVER AT VIRGINIA TECH
                                          AIRPORT.  A SECOND PLANE
                                          DAMAMGED.

330 PM    VIRGILINA                  VA   WIND DAMAGE
07/22/98  HALIFAX                         PUBLIC REPORT RELAYED
                                          THROUGH 911 DISPATCH OF
                  V                        TREES DOWN AND TWISTED
                                          TREE TOPS AS WELL AS POWER
                                          OUTAGES NEAR VIRGILINA.

SJK
Local storm report, Jul 22, 4:06 PM EDT, 0 minutes before
LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BLACKSBURG VA
406 PM EDT WED JUL 22 1998

TIME (EDT) .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

328 PM     BLACKSBURG                VA   WIND DAMAGE
07/22/98   MONTGOMERY                     TWO SINGLE ENGINE PLANES
                                          FLIPPED OVER AT VIRGINIA TECH
                                          AIRPORT.  A THIRD PLANE
                                          DAMAGED.

330 PM    VIRGILINA                  VA   WIND DAMAGE
07/22/98  HALIFAX                         PUBLIC REPORT RELAYED
                                          THROUGH 911 DISPATCH OF
                                          TREES DOWN AND TWISTED
                                          TREE TOPS AS WELL AS POWER
                                          OUTAGES NEAR VIRGILINA.

SJK
Local storm report, Jul 22, 4:06 PM EDT, 0 minutes before
LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
406 PM EDT WED JUL 22 1998

TIME (EDT) .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

328 PM     BLACKSBURG                VA   WIND DAMAGE
07/22/98   MONTGOMERY                     TWO SINGLE ENGINE PLANES
                                          FLIPPED OVER AT VIRGINIA TECH
                                          AIRPORT.  A SECOND PLANE
                                          DAMAMGED.

330 PM    VIRGILINA                  VA   WIND DAMAGE
07/22/98  HALIFAX                         PUBLIC REPORT RELAYED
                                          THROUGH 911 DISPATCH OF
                  V                        TREES DOWN AND TWISTED
                                          TREE TOPS AS WELL AS POWER
                                          OUTAGES NEAR VIRGILINA.

SJK
Local storm report, Jul 22, 4:06 PM EDT, 0 minutes before
LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BLACKSBURG VA
406 PM EDT WED JUL 22 1998

TIME (EDT) .....CITY LOCATION..... STATE  ...EVENT/REMARKS...
           ....COUNTY LOCATION....

328 PM     BLACKSBURG                VA   WIND DAMAGE
07/22/98   MONTGOMERY                     TWO SINGLE ENGINE PLANES
                                          FLIPPED OVER AT VIRGINIA TECH
                                          AIRPORT.  A THIRD PLANE
                                          DAMAGED.

330 PM    VIRGILINA                  VA   WIND DAMAGE
07/22/98  HALIFAX                         PUBLIC REPORT RELAYED
                                          THROUGH 911 DISPATCH OF
                                          TREES DOWN AND TWISTED
                                          TREE TOPS AS WELL AS POWER
                                          OUTAGES NEAR VIRGILINA.

SJK

The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jul 22, 3:25 PM EDTSevere Thunderstorm WarningRNKMontgomery35 min
Jul 22, 3:36 PM EDTSevere Thunderstorm WarningRNKBedford34 min
Jul 22, 4:13 PM EDTSevere Thunderstorm WarningRNKAmherst32 min
Jul 22, 4:15 PM EDTSevere Thunderstorm WarningRNKPittsylvania, City of Danville35 min
Jul 22, 4:20 PM EDTSevere Thunderstorm WarningRNKAppomattox35 min
Jul 22, 5:06 PM EDTSevere Thunderstorm WarningRNKCharlotte34 min

Nearby

Severe Thunderstorm Warnings in Virginia, 1998Every severe thunderstorm 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.