Alert archive / Virginia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 43, NWS Blacksburg, VA

May 7, 1999Campbell County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at May 7, 1999, 9:28 PM EDT for Campbell County, Virginia. It was in force for 37 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: May 7, 1999, 9:28 PM EDT (01:28 UTC)
Expired: May 7, 1999, 10:05 PM EDT
In force: 37 min
Issued by: NWS Blacksburg, VA
Area: Whole counties

County Campbell County, VA

What was reported inside it

Time	Report	Where	Remark
May 7, 9:40 PM EDT	Hail 0.75	Rustburg, 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

Greensboro/Hi Pt, NC (KGSO), launched 00:00Z, 1.5 hours before the alert went out and 144 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: 1014 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 926 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 38 m²/s²
0-3 km storm-relative helicity: 35 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.9

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 May 7, 9:05 PM EDT, 23 minutes earlier.

Area forecast discussion, May 7, 9:05 PM EDT, 23 minutes before

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In the hours before

Local storm report, May 7, 5:46 PM EDT, 3 hours 42 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
0546 PM EDT FRI MAY 07 1999

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

0450 PM    GROSECLOSE                VA   .75 INCH HAIL
05/07/99   SMYTH                          DIME SIZE HAIL REPORTED BY
                                          SPOTTER NEAR I-81

0515 PM    VOLNEY                    VA   .75 INCH HAIL
05/07/99   GRAYSON                        DIME SIZE HAIL REPORTED AT
                                          GRAYSON HIGHLAND STATE PARK

SK

Local storm report, May 7, 6:47 PM EDT, 2 hours 41 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
0645 PMEDT FRI MAY 07 1999

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

0551 PM    3S EGGLESTON              VA   .75 INCH HAIL
05/07/99   GILES                          DIME SIZE HAIL REPORTED BY
                                          SPOTTER

0615 PM    3W DUBLIN                 VA   .75 TO 1.00 INCH HAIL
05/07/99   PULASKI                        DIME TO QUARTER SIZE HAIL
                                          REPORTED BY SPOTTER

0615 PM    3S EGGLESTON              VA   1.00 INCH HAIL
05/07/99   GILES                          QUARTER SIZE HAIL

0623 PM    PEMBROKE                  VA   POWER LINES DOWN
05/07/99   GILES

0635 PM    LAUREL RIDGE              VA   1.00 INCH HAIL
05/07/99   MONTGOMERY                     QUARTER SIZE HAIL

BS

Local storm report, May 7, 7:20 PM EDT, 2 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
0720 PM EDT FRI MAY 07 1999

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

0630 PM    PEMBROKE                  VA   TREE LIMBS DOWN
05/07/99   GILES

0635 PM    NEWPORT                   VA   1.50 INCH HAIL
05/07/99   GILES                          ALSO 1 INCH HAIL COVERING
                                          GROUND REPORTED BY SPOTTER

0640 PM    4 NE PAINT BANK           VA   .75 INCH HAIL
05/07/99   CRAIG                          DIME SIZE HAIL REPORTED BY
                                          SPOTTER

0717 PM    NEWCASTLE                 VA   .75 INCH HAIL
05/07/99   CRAIG                          REPORTED BY SPOTTER

Local storm report, May 7, 7:20 PM EDT, 2 hours 8 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VIRGINIA
0720 PM EDT FRI MAY 07 1999

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

0630 PM    PEMBROKE                  VA   TREE LIMBS DOWN
05/07/99   GILES

0635 PM    NEWPORT                   VA   1.50 INCH HAIL
05/07/99   GILES                          ALSO 1 INCH HAIL COVERING
                                          GROUND REPORTED BY SPOTTER

0640 PM    4 NE PAINT BANK           VA   .75 INCH HAIL
05/07/99   CRAIG                          DIME SIZE HAIL REPORTED BY
                                          SPOTTER

0717 PM    NEWCASTLE                 VA   .75 INCH HAIL
05/07/99   CRAIG                          REPORTED BY SPOTTER

Local storm report, May 7, 9:05 PM EDT, 23 minutes before

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Local storm report, May 7, 9:05 PM EDT, 23 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 7, 8:05 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania	50 min
May 7, 8:07 PM EDT	Severe Thunderstorm Warning	RNK	Wythe	63 min
May 7, 8:19 PM EDT	Severe Thunderstorm Warning	RNK	Henry	36 min
May 7, 8:24 PM EDT	Severe Thunderstorm Warning	RNK	Pulaski	51 min
May 7, 8:39 PM EDT	Severe Thunderstorm Warning	RNK	Franklin	51 min
May 7, 8:50 PM EDT	Severe Thunderstorm Warning	RNK	Giles	50 min
May 7, 10:12 PM EDT	Severe Thunderstorm Warning	RNK	Carroll	33 min
May 7, 10:47 PM EDT	Severe Thunderstorm Warning	RNK	Floyd	63 min
May 7, 11:11 PM EDT	Severe Thunderstorm Warning	RNK	Roanoke, City of Roanoke	34 min

Nearby

Severe Thunderstorm Warnings in Virginia, 1999 Every severe thunderstorm 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.