Alert archive / Maryland / Severe Thunderstorm Watches in 2001
Severe Thunderstorm Watch 298
The Storm Prediction Center issued this severe thunderstorm watch at May 27, 2001, 1:45 PM EDT for 5 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- May 27, 2001, 1:45 PM EDT (17:45 UTC)
- Expired
- May 27, 2001, 7:00 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 37 counties
Kent County, DE, New Castle County, DE, Anne Arundel County, MD, Baltimore County, MD, Calvert County, MD, Caroline County, MD, Carroll County, MD, Cecil County, MD, Charles County, MD, City of Baltimore, MD, Dorchester County, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Kent County, MD, Montgomery County, MD, Prince George's County, MD, Queen Anne's County, MD, Talbot County, MD, Salem County, NJ, Arlington County, VA, City of Alexandria, VA, City of Fairfax, VA, City of Falls Church, VA, City of Manassas, VA, City of Manassas Park, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Loudoun County, VA, Madison County, VA, Prince William County, VA, Rappahannock County, VA, Stafford County, VA, Warren County, VA, Jefferson County, WV
The radar
The Sterling radar (KLWX), 27 km from the middle of the area, began a volume at 17:48 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.
Warnings issued inside it
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 27, 1:50 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Fauquier, Loudoun | 40 min |
| May 27, 2:25 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 50 min |
| May 27, 2:35 PM EDT | Severe Thunderstorm Warning | LWX | Prince William, City of Manassas, City of Manassas Park | 40 min |
| May 27, 2:35 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier | 40 min |
| May 27, 3:02 PM EDT | Severe Thunderstorm Warning | LWX | Howard | 43 min |
| May 27, 3:08 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 37 min |
| May 27, 3:17 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 28 min |
| May 27, 3:26 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, City of Baltimore | 49 min |
| May 27, 4:04 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Queen Anne's | 41 min |
| May 27, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 51 min |
| May 27, 6:53 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 52 min |
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 5.8 hours before the alert went out and 19 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
- 49 J/kg
- Mixed-layer CIN
- -99 J/kg
- Mixed-layer LCL
- 728 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 58 m²/s²
- 0-3 km storm-relative helicity
- 74 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.
Nearby
Severe Thunderstorm Watches in Maryland, 2001Severe Thunderstorm Watches in Virginia, 2001Severe Thunderstorm Watches in Delaware, 2001Every severe thunderstorm watch 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; radar from the NEXRAD Level II archive.