Alert archive / Virginia / Tornado Watches in 2015
Tornado Watch 276
The Storm Prediction Center issued this tornado watch at Jun 8, 2015, 2:34 PM EDT for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 8, 2015, 2:34 PM EDT (18:34 UTC)
- Expired
- Jun 8, 2015, 7:40 PM EDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 77 counties
Allegany County, MD, Anne Arundel County, MD, Baltimore County, MD, Carroll County, MD, Charles County, MD, City of Baltimore, MD, Frederick County, MD, Harford County, MD, Howard County, MD, Montgomery County, MD, Prince George's County, MD, Washington County, MD, Adams County, PA, Bedford County, PA, Blair County, PA, Centre County, PA, Clinton County, PA, Columbia County, PA, Cumberland County, PA, Dauphin County, PA, Franklin County, PA, Fulton County, PA, Huntingdon County, PA, Juniata County, PA, Lancaster County, PA, Lebanon County, PA, Lycoming County, PA, Mifflin County, PA, Montour County, PA, Northumberland County, PA, Perry County, PA, Schuylkill County, PA, Snyder County, PA, Sullivan County, PA, Tioga County, PA, Union County, PA, York County, PA, Albemarle County, VA, Arlington County, VA, Augusta County, VA, City of Alexandria, VA, City of Charlottesville, VA, City of Fairfax, VA, City of Fredericksburg, VA, City of Harrisonburg, VA, City of Manassas, VA, City of Staunton, VA, City of Waynesboro, VA, City of Winchester, VA, Clarke County, VA, Culpeper County, VA, Fairfax County, VA, Fauquier County, VA, Frederick County, VA, Greene County, VA, Highland County, VA, King George County, VA, Loudoun County, VA, Madison County, VA, Nelson County, VA, Orange County, VA, Page County, VA, Prince William County, VA, Rappahannock County, VA, Rockingham County, VA, Shenandoah County, VA, Spotsylvania County, VA, Stafford County, VA, Warren County, VA, Berkeley County, WV, Grant County, WV, Hampshire County, WV, Hardy County, WV, Jefferson County, WV, Mineral County, WV, Morgan County, WV, Pendleton County, WV
The radar
The State College radar (KCCX), 75 km from the middle of the area, began a volume at 18:37 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 30%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 60%
Warnings issued inside it
36 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 2:35 PM EDT | Severe Thunderstorm Warning | CTP | Cameron, Clinton, Lycoming, Potter, Tioga | 70 min |
| Jun 8, 2:42 PM EDT | Severe Thunderstorm Warning | CTP | Columbia, Dauphin, Juniata, Mifflin, Montour, Northumberland and 4 more | 48 min |
| Jun 8, 2:44 PM EDT | Severe Thunderstorm Warning | CTP | Bedford, Blair, Cambria, Huntingdon, Somerset | 61 min |
| Jun 8, 3:00 PM EDT | Severe Thunderstorm Warning | LWX | Page | 19 min |
| Jun 8, 3:13 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Madison, Page, Rappahannock | 47 min |
| Jun 8, 3:29 PM EDT | Tornado Warning | CTP | Columbia, Northumberland, Schuylkill | 61 min |
| Jun 8, 3:30 PM EDT | Tornado Warning | CTP | Dauphin, Perry | 45 min |
| Jun 8, 3:42 PM EDT | Severe Thunderstorm Warning | CTP | Huntingdon, Juniata, Mifflin, Snyder | 63 min |
| Jun 8, 3:46 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Frederick, City of Winchester | 44 min |
| Jun 8, 3:49 PM EDT | Severe Thunderstorm Warning | CTP | Clinton, Lycoming, Sullivan | 71 min |
| Jun 8, 3:56 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Rappahannock | 34 min |
| Jun 8, 4:06 PM EDT | Severe Thunderstorm Warning | LWX | Culpeper, Fauquier | 39 min |
| Jun 8, 4:18 PM EDT | Severe Thunderstorm Warning | LWX | Washington | 42 min |
| Jun 8, 4:18 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Franklin, Lebanon, Northumberland, Perry and 1 more | 72 min |
| Jun 8, 4:19 PM EDT | Flash Flood Warning | CTP | Dauphin, Juniata, Perry | 5 hr |
| Jun 8, 4:29 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 46 min |
| Jun 8, 4:36 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Washington | 24 min |
| Jun 8, 4:37 PM EDT | Severe Thunderstorm Warning | CTP | Schuylkill | 38 min |
| Jun 8, 4:38 PM EDT | Severe Thunderstorm Warning | CTP | Columbia | 25 min |
| Jun 8, 4:39 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, Fauquier, Prince William, City of Fairfax, City of Manassas, City of Manassas Park | 36 min |
| Jun 8, 5:06 PM EDT | Flash Flood Warning | CTP | Cumberland, Dauphin, Franklin, Perry | 3 hr |
| Jun 8, 5:08 PM EDT | Severe Thunderstorm Warning | CTP | Cumberland, Dauphin, Lancaster, Lebanon, Schuylkill, York | 67 min |
| Jun 8, 5:12 PM EDT | Severe Thunderstorm Warning | CTP | Adams, Cumberland, Franklin, York | 63 min |
| Jun 8, 5:15 PM EDT | Severe Thunderstorm Warning | LWX | Page, Shenandoah | 30 min |
| Jun 8, 5:34 PM EDT | Severe Thunderstorm Warning | LWX | Prince George's | 26 min |
| Jun 8, 5:44 PM EDT | Severe Thunderstorm Warning | LWX | Fauquier, Page, Rappahannock, Warren | 46 min |
| Jun 8, 5:51 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Fauquier, Frederick, Shenandoah, Warren | 39 min |
| Jun 8, 6:11 PM EDT | Severe Thunderstorm Warning | CTP | Dauphin, Lancaster, Lebanon, York | 79 min |
| Jun 8, 6:17 PM EDT | Severe Thunderstorm Warning | LWX | Frederick, Montgomery, Washington | 28 min |
| Jun 8, 6:19 PM EDT | Severe Thunderstorm Warning | CTP | Adams | 41 min |
| Jun 8, 6:25 PM EDT | Severe Thunderstorm Warning | LWX | Carroll, Frederick | 50 min |
| Jun 8, 6:27 PM EDT | Severe Thunderstorm Warning | LWX | Clarke, Fauquier, Frederick, Loudoun, Shenandoah, Warren | 33 min |
| Jun 8, 6:43 PM EDT | Severe Thunderstorm Warning | LWX | Fairfax, Fauquier, Loudoun, Prince William, City of Fairfax | 32 min |
| Jun 8, 6:54 PM EDT | Severe Thunderstorm Warning | LWX | Baltimore, Carroll, Frederick, Howard | 51 min |
| Jun 8, 7:12 PM EDT | Severe Thunderstorm Warning | LWX | Montgomery | 48 min |
| Jun 8, 7:28 PM EDT | Severe Thunderstorm Warning | LWX | Anne Arundel, Baltimore, Harford, Howard, City of Baltimore | 62 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 6.6 hours before the alert went out and 150 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1040 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 249 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
302 WWUS20 KWNS 081823 SEL6 SPC WW 081823 MDZ000-PAZ000-VAZ000-WVZ000-090000- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 276 NWS STORM PREDICTION CENTER NORMAN OK 225 PM EDT MON JUN 8 2015 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF MARYLAND PANHANDLE CENTRAL AND EASTERN PENNSYLVANIA NORTHWEST VIRGINIA EASTERN WEST VIRGINIA * EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 225 PM UNTIL 800 PM EDT. * PRIMARY THREATS INCLUDE... A COUPLE TORNADOES POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE ISOLATED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE SUMMARY...SCATTERED STORMS WILL POSE A RISK FOR DAMAGING WINDS AREA-WIDE. A COUPLE TORNADOES ARE POSSIBLE...PARTICULARLY ACROSS PARTS OF CENTRAL/EASTERN PENNSYLVANIA. THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH NORTHEAST OF WILLIAMSPORT PENNSYLVANIA TO 20 MILES SOUTH OF STAUNTON VIRGINIA. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6). PRECAUTIONARY/PREPAREDNESS ACTIONS... REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS. && OTHER WATCH INFORMATION...CONTINUE...WW 274...WW 275... AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM MOTION VECTOR 24035. ...GRAMS/HART
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 1:10 PM EDT | Mesoscale Discussion | SPC | Allegany, Garrett | 2 hr |
| Jun 8, 1:31 PM EDT | Mesoscale Discussion | SPC | Washington | 119 min |
| Jun 8, 2:40 PM EDT | Severe Thunderstorm Watch | SPC | Garrett | 6 hr |
| Jun 8, 4:46 PM EDT | Mesoscale Discussion | SPC | Baltimore, Carroll, Frederick, Harford, Howard, Montgomery and 3 more | 59 min |
| Jun 8, 7:07 PM EDT | Mesoscale Discussion | SPC | Anne Arundel, Baltimore, Carroll, Charles, Frederick, Harford and 4 more | 53 min |
| Jun 8, 7:24 PM EDT | Severe Thunderstorm Watch | SPC | Anne Arundel, Baltimore, Carroll, Charles, Harford, Howard and 3 more | 2 hr |
| Jun 8, 1:39 PM EDT | Tornado Watch | SPC | Bradford, Lackawanna, Luzerne, Pike, Susquehanna, Wayne and 1 more | 6 hr |
| Jun 8, 2:58 PM EDT | Mesoscale Discussion | SPC | Bradford, Columbia, Lackawanna, Luzerne, Lycoming, Monroe and 6 more | 92 min |
| Jun 8, 3:20 PM EDT | Mesoscale Discussion | SPC | Adams, Berks, Bucks, Carbon, Centre, Chester and 25 more | 85 min |
| Jun 8, 4:13 PM EDT | Tornado Watch | SPC | Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more | 4 hr |
| Jun 8, 7:12 PM EDT | Mesoscale Discussion | SPC | Lackawanna, Luzerne, Pike, Wayne | 93 min |
| Jun 8, 1:08 PM EDT | Mesoscale Discussion | SPC | Lee | 97 min |
| Jun 8, 4:24 PM EDT | Mesoscale Discussion | SPC | Bland, Buchanan, Dickenson, Lee, Russell, Scott and 6 more | 96 min |
| Jun 8, 6:24 PM EDT | Mesoscale Discussion | SPC | Amherst, Appomattox, Bedford, Bland, Buckingham, Campbell and 27 more | 96 min |
Nearby
Tornado Watches in Virginia, 2015Tornado Watches in Pennsylvania, 2015Tornado Watches in Maryland, 2015Every tornado watch in 2015
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.