Alert archive / Virginia / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 85, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Jun 30, 2001, 3:32 PM EDT for Fauquier County, Prince William County, Virginia. It was in force for 43 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
- Jun 30, 2001, 3:32 PM EDT (19:32 UTC)
- Expired
- Jun 30, 2001, 4:15 PM EDT
- In force
- 43 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties
Counties Fauquier County, VA, Prince William County, VA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 30, 3:40 PM EDT | Thunderstorm Wind | Countywide, VA | Trees were downed onto roads and a house. |
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
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.5 hours before the alert went out and 33 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
- 1110 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1211 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- -35 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 Baltimore/Washington wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 30, 2:35 PM EDT, 57 minutes earlier.
Area forecast discussion, Jun 30, 2:35 PM EDT, 57 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON 235 PM EDT SAT JUN 30 2001 HEAT ADVSRY CURRENTLY IN EFFECT SEEMS TO BE VERIFYING - 2 PM ROUND-UP SHOWS SVRL STATIONS ARND 98 DEGS FOR HEAT INDEX VALUES. AS ANTICIPATED SCT CONVECTION IS FIRING. HOWEVER A FOCUS IS LACKING FOR AN ORGANIZED LINE. EVEN SO FEEL SOME CELLS COULD GO SVR WITH CAPES OVER 3000 THIS AFTN. CURRENT VWP SHOWS A FLOW FM THE WSW ARND 10 KTS. THIS CORRESPONDS WITH CELL MVMNT. FCST WL HAVE SCT CONVECTION INTO THE EVENG HRS...THEN PC AND CONT WARM OVRNGT. FOR TMRW AM UNSURE OF NEED FOR ANOTHER HEAT ADVSRY - FOR ONE THING TMRW IS JULY...AND ON JUL 1 MIN REQUIREMENT RISES FM 98 TO 100. TMRW AFTN AND EVE COULD BE INTERESTING - ALL MDLS IN AGREEMENT ON MVMNT OF CD FNT SWD ACROSS PA ON SUN AFTN. SPC HAS ERN PA IN MDT RISK...AND NRN HALF OF OUR CWA IN SLGT RISK. FOR NOW WL GO WITH A 50 POP ACROSS THE NRN HALF OF THE AREA SUN AFTN...40 POP S. WL KEEP A CHC IN FOR SUN EVENG. MON LOOKS LIKE A PLEASNT CHG TO THE PAST SVRL DAYS. DCA 75 92 65 79 / 30 50 40 10 BWI 72 90 63 77 / 30 50 40 0 MRB 68 91 62 76 / 30 50 30 0 IAD 69 90 63 77 / 30 50 40 0 CHO 69 92 64 80 / 30 40 40 10 HGR 68 91 62 76 / 30 50 30 0 NHK 73 92 64 80 / 30 40 40 10 W99 65 89 59 73 / 30 50 30 0 .LWX... DC...NONE. MD...NONE. VA...NONE. W2V...NONE. WOODY!
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 30, 4:54 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 51 min |
| Jun 30, 5:13 PM EDT | Severe Thunderstorm Warning | LWX | Jefferson | 32 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2001Every severe thunderstorm warning in 2001
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.