Alert archive / Virginia / Severe Thunderstorm Warnings in 2000
Severe Thunderstorm Warning 191, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Jul 14, 2000, 8:51 PM EDT for Shenandoah County, Virginia. It was in force for 39 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 14, 2000, 8:51 PM EDT (00:51 UTC)
- Expired
- Jul 14, 2000, 9:30 PM EDT
- In force
- 39 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
County Shenandoah County, VA
The radar
The Sterling radar (KLWX), 95 km from the middle of the area, began a volume at 00:53 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 0.9 hours before the alert went out and 102 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
- 1500 J/kg
- Mixed-layer CIN
- -10 J/kg
- Mixed-layer LCL
- 1168 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 70 m²/s²
- 0-3 km storm-relative helicity
- 109 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 2.5
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 Jul 14, 2:50 PM EDT, 6 hours 1 minute earlier.
Area forecast discussion, Jul 14, 2:50 PM EDT, 6 hours 1 minute before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON 250 PM EDT FRI JUL 14 2000 A FEW SHRAS/TSRAS HV BKN OUT OVR THE FA THIS AFTN. STG TSTMS HV FORMED OVR OH UNDER STG PVA AHD OF GRT LAKES S/W AND UNDER LF QUAD OF UPR JET. PVA FM GRT LAKES S/W PROGGED TO REACH FA AFT 00Z TNGT. ALL MDLS SHOW RH INCRG OVR FA AFT 00Z AS PVA MOVS INTO FA. GIVEN STRENGTH OF VORT MX...INCRG RH AND LIKELIHOOD OF BDRYS LEFTOVR FM PM CONVECTION...WL GO ABV GUIDANCE AND SAY LIKELY POPS TNGT. LOSS OF DAYTIME HTG AND LACK OF JET DYNAMICS WL DIMINISH SVR THREAT OVERNGT. MDLS ALL PROG UPR LOW TO CUTOFF OVR NE U.S. DUR FCST PD BUT DIFFER ON TIMING AND PLACEMENT OF LOW. VORT MX WL STILL BE OVER THE FA FOR MUCH OF SAT AND ENUF RH WL BE IN PLACE TO SUPPORT LIKELIHOOD OF SHRAS. EXPECT ALOT OF CLDS DURING THE DAY WHICH WL INHIBIT POTENTIAL FOR THUNDER SO WL NOT MENTION TSRAS. FWC TEMPS IN L/M 80S APPR TOO HI SO WL LEAN TWD FAN NUMBERS IN 70S. RH PROGGED TO RETREAT N SAT NGT AS UPR LOW RMNS IN VCNTY. WL KEEP A CHC FOR EVE SHRAS IN NE HALF OF FA OTRW WL HV MC. SOME MOISTURE WL RMN OVR THE AREA ON SUN. ETA/NGM SHOW WELL DEFINED S/W MOVG ARND UPR LOW INTO FTHE FA. WL HV PC/PS AND A 30 POP FOR SHRAS. FWC TEMPS LUK GUD RMNDR OF FCST PDS. .LWX... DC...NONE. MD...NONE. VA...NONE. WV...NONE. ARTHUR
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 8:24 PM EDT | Severe Thunderstorm Warning | LWX | Prince William, City of Manassas, City of Manassas Park | 66 min |
| Jul 14, 8:51 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Frederick, Warren | 39 min |
| Jul 14, 10:06 PM EDT | Severe Thunderstorm Warning | LWX | Loudoun | 24 min |
| Jul 14, 10:19 PM EDT | Flash Flood Warning | LWX | Fairfax, City of Fairfax, City of Falls Church | 56 min |
| Jul 15, 12:35 AM EDT | Flash Flood Warning | LWX | King George, Stafford | 115 min |
| Jul 14, 8:15 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 45 min |
| Jul 14, 10:44 PM EDT | Flash Flood Warning | LWX | Baltimore, City of Baltimore | 2 hr |
| Jul 14, 11:23 PM EDT | Flash Flood Warning | LWX | Anne Arundel, Prince George's | 67 min |
| Jul 15, 12:11 AM EDT | Severe Thunderstorm Warning | LWX | Charles | 64 min |
| Jul 15, 2:25 AM EDT | Flash Flood Warning | LWX | Saint Mary's | 65 min |
Nearby
Severe Thunderstorm Warnings in Virginia, 2000Every severe thunderstorm warning in 2000
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; radar from the NEXRAD Level II archive.