Alert archive / Virginia / Severe Thunderstorm Warnings in 1998

Severe Thunderstorm Warning 259, NWS Blacksburg, VA

July 22, 1998Appomattox County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 22, 1998, 4:20 PM EDT for Appomattox County, Virginia. It was in force for 35 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 22, 1998, 4:20 PM EDT (20:20 UTC)
Expired: Jul 22, 1998, 4:55 PM EDT
In force: 35 min
Issued by: NWS Blacksburg, VA
Area: Whole counties

County Appomattox County, VA

What was reported inside it

Time	Report	Where	Remark
Jul 22, 4:55 PM EDT	Thunderstorm Wind	Appomattox, VA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 8.3 hours before the alert went out and 64 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KROA 222020 RRA
SVRRNK
VAC011-222055-

BULLETIN--IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BLACKSBURG VA
420 PM EDT WED JUL 22 1998

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN APPOMATTOX COUNTY IN CENTRAL VIRGINIA.

* UNTIL 455 PM EDT.

* AT 419 PM EDT... BLACKSBURG DOPPLER RADAR INDICATED A SEVERE
  THUNDERSTORM 13 MILES EAST NORTHEAST OF LYNCHBURG OR 5 MILES WEST
  OF BENT CREEK MOVING EAST AT 15 MPH.

* SEVERE WEATHER IS EXPECTED TO REACH...
  BENT CREEK                      AROUND 435 PM EDT..
  TOWER HILL                      AROUND 445 PM EDT..

<< CALL TO ACTION >> SEVERE THUNDERSTORMS ARE CAPABLE OF PRODUCING
DAMAGING WINDS AND LARGE HAIL.  MOVE TO A PLACE OF SAFETY
IMMEDIATELY.

.END/MV

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 48 minutes earlier.

Area forecast discussion, Jul 22, 2:32 PM EDT, 1 hour 48 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, 50 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, 14 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, 14 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, 14 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, 14 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.

Issued	Product	Office	Counties	Lasted
Jul 22, 3:25 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery	35 min
Jul 22, 3:36 PM EDT	Severe Thunderstorm Warning	RNK	Bedford	34 min
Jul 22, 4:06 PM EDT	Severe Thunderstorm Warning	RNK	Franklin	34 min
Jul 22, 4:13 PM EDT	Severe Thunderstorm Warning	RNK	Amherst	32 min
Jul 22, 4:15 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	35 min
Jul 22, 5:06 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte	34 min

Nearby

Severe Thunderstorm Warnings in Virginia, 1998 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.