Alert archive / Virginia / Severe Thunderstorm Warnings in 2001
Severe Thunderstorm Warning 133, NWS Baltimore/Washington
NWS Baltimore/Washington issued this severe thunderstorm warning at Aug 30, 2001, 4:20 PM EDT for Albemarle County, City of Charlottesville, Virginia. It was in force for 55 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
- Aug 30, 2001, 4:20 PM EDT (20:20 UTC)
- Expired
- Aug 30, 2001, 5:15 PM EDT
- In force
- 55 min
- Issued by
- NWS Baltimore/Washington
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 8.3 hours before the alert went out and 141 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
- 1915 J/kg
- Mixed-layer CIN
- -6 J/kg
- Mixed-layer LCL
- 517 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 95 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 Aug 30, 10:15 AM EDT, 6 hours 5 minutes earlier.
Area forecast discussion, Aug 30, 10:15 AM EDT, 6 hours 5 minutes before
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE BALTIMORE/WASHINGTON 1015 AM EDT THU AUG 30 2001 WEAK HI PRES ACRS THE AREA ATTM ALONG WITH A WEAK FRNTL BNDRY XTNDG FM NEAR FDK TO BTWN IAD AND DCA THEN E OF EZF. SCT SHWRS AND A FEW TSTMS HAVE BEEN ACTIVE AHEAD OF THE BNDRY. SAT IMAGERY DEPICTS GNRL CLDINS E OF THE BLUE RDG WITH PATCHES OF DENSE FOG RMNG TO THE WEST OF THE RDG WHICH WL DISSIPATE BY ARND NOON. OTW ERLR FCST PKG APPEARS ON TARGET FOR THE RMNDR OF THE DAY. SLT OR 30 POP CHC WL DO FOR ANY CONV ACTVTY WHICH WL BE DIURNALLY DRIVEN WITH LTL OR NO UPR SUPPORT. FOG AND CONV BEING HANDLED WITH NOWS. THATS IT FOR NOW...LATER. FCSTID = 13...PAP DCA 86 72 86 69 / 20 10 30 50 BWI 86 69 86 67 / 20 10 30 50 MRB 85 67 85 65 / 20 10 30 60 IAD 86 67 86 65 / 20 10 30 50 CHO 85 68 85 67 / 30 20 40 50 HGR 85 66 85 64 / 20 10 30 60 NHK 86 69 86 67 / 20 10 30 50 W99 86 68 86 66 / 20 10 30 60 .LWX... DC...NONE. MD...NONE. VA...NONE. WV...NONE.
The office that day
Everything else NWS Baltimore/Washington issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 30, 3:55 PM EDT | Severe Thunderstorm Warning | LWX | Orange | 65 min |
| Aug 30, 4:40 PM EDT | Severe Thunderstorm Warning | LWX | Rockingham | 50 min |
| Aug 30, 5:02 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier | 53 min |
| Aug 30, 1:31 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel | 29 min |
| Aug 30, 1:38 PM EDT | Flash Flood Warning | LWX | Anne Arundel | 2 hr |
| Aug 30, 5:57 PM EDT | Flash Flood Warning | LWX | Anne Arundel | 2 hr |
| Aug 30, 7:03 PM EDT | Flash Flood Warning | LWX | Howard | 117 min |
| Aug 30, 7:46 PM EDT | Flash Flood Warning | LWX | Charles | 119 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; the sounding from the Mesonet's radiosonde archive.