Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 46, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 15, 2011, 11:18 PM EDT for 4 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 57 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 15, 2011, 11:18 PM EDT (03:18 UTC)
- Expired
- May 16, 2011, 12:15 AM EDT
- In force
- 57 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Warren County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 82 km from the middle of the area, began a volume at 03:18 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 was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 15, 11:20 PM EDT | TSTM WND DMG | Plumstead Twp, PA | TREES AND SOME WIRES DOWN |
| May 15, 11:22 PM EDT | TSTM WND DMG | Pipersville, PA | TREE LIMBS DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 3.3 hours before the alert went out and 180 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
- 185 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 731 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 96 m²/s²
- 0-3 km storm-relative helicity
- 71 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
653 WUUS51 KPHI 160318 SVRPHI NJC019-027-035-041-PAC017-160415- /O.NEW.KPHI.SV.W.0046.110516T0318Z-110516T0415Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1118 PM EDT SUN MAY 15 2011 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN MORRIS COUNTY IN NORTHERN NEW JERSEY... WEST CENTRAL SOMERSET COUNTY IN NORTHERN NEW JERSEY... HUNTERDON COUNTY IN NORTHWEST NEW JERSEY... EAST CENTRAL WARREN COUNTY IN NORTHWEST NEW JERSEY... CENTRAL BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA... * UNTIL 1215 AM EDT * AT 1114 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR DOYLESTOWN...OR 21 MILES NORTH OF PHILADELPHIA...AND MOVING NORTHEAST AT 25 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... GARDENVILLE AND BEDMINSTER AROUND 1125 PM EDT... PIPERSVILLE AROUND 1130 PM EDT... BYRAM...LUMBERVILLE AND TINICUM TOWNSHIP AROUND 1135 PM EDT... STOCKTON AROUND 1140 PM EDT... ERWINNA AROUND 1145 PM EDT... SERGEANTSVILLE AND FRENCHTOWN AROUND 1150 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS. && LAT...LON 4080 7488 4063 7460 4020 7513 4032 7531 TIME...MOT...LOC 0318Z 219DEG 21KT 4033 7514 $$ HAYES
3 follow-up statements
677 WWUS51 KPHI 160341 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1141 PM EDT SUN MAY 15 2011 NJC019-027-035-041-PAC017-160415- /O.CON.KPHI.SV.W.0046.000000T0000Z-110516T0415Z/ WARREN NJ-MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-BUCKS PA- 1141 PM EDT SUN MAY 15 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR NORTH CENTRAL BUCKS...NORTHWESTERN SOMERSET...HUNTERDON... SOUTHWESTERN MORRIS AND EAST CENTRAL WARREN COUNTIES... AT 1139 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ERWINNA...OR 16 MILES SOUTHEAST OF EASTON...MOVING NORTHEAST AT 25 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... 7 MILES NORTHWEST OF FLEMINGTON BY 1155 PM EDT... CLINTON BY 1205 AM EDT... ANNANDALE...HIGH BRIDGE...LEBANON AND GLEN GARDNER BY 1210 AM EDT... CALIFON AND 6 MILES NORTHWEST OF WHITE HOUSE STATION BY 1215 AM EDT... LAT...LON 4065 7466 4040 7498 4047 7518 4080 7488 TIME...MOT...LOC 0341Z 218DEG 22KT 4051 7503 $$ HAYES
500 WWUS51 KPHI 160354 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1154 PM EDT SUN MAY 15 2011 NJC019-027-035-041-PAC017-160415- /O.CON.KPHI.SV.W.0046.000000T0000Z-110516T0415Z/ WARREN NJ-MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-BUCKS PA- 1154 PM EDT SUN MAY 15 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1215 AM EDT FOR NORTH CENTRAL BUCKS...NORTHWESTERN SOMERSET...HUNTERDON... SOUTHWESTERN MORRIS AND EAST CENTRAL WARREN COUNTIES... AT 1152 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR FRENCHTOWN...OR 15 MILES SOUTHEAST OF EASTON...MOVING NORTHEAST AT 25 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... CLINTON BY 1205 AM EDT... ANNANDALE...HIGH BRIDGE...GLEN GARDNER AND HAMPTON BY 1210 AM EDT... LEBANON...CALIFON AND 6 MILES NORTHWEST OF WHITE HOUSE STATION BY 1215 AM EDT... LAT...LON 4065 7466 4040 7498 4047 7518 4080 7488 TIME...MOT...LOC 0354Z 218DEG 22KT 4057 7496 $$ HAYES
328 WWUS51 KPHI 160409 SVSPHI SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 1209 AM EDT MON MAY 16 2011 NJC019-027-035-041-PAC017-160419- /O.EXP.KPHI.SV.W.0046.000000T0000Z-110516T0415Z/ WARREN NJ-MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-BUCKS PA- 1209 AM EDT MON MAY 16 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BUCKS... NORTHWESTERN SOMERSET...HUNTERDON...SOUTHWESTERN MORRIS AND EAST CENTRAL WARREN COUNTIES WILL EXPIRE AT 1215 AM EDT... THE STORMS THAT PROMPTED THE WARNING HAVE WEAKENED AND AREA ABOUT TO MOVE OUT OF THE AREA. LAT...LON 4065 7466 4040 7498 4047 7518 4080 7488 TIME...MOT...LOC 0409Z 218DEG 22KT 4064 7488 $$ HAYES
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 15, 8:21 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 35 min |
| May 15, 8:53 PM EDT | Special Weather Statement | PHI | Hunterdon, Warren | 67 min |
| May 15, 9:17 PM EDT | Special Weather Statement | PHI | Salem | 58 min |
| May 15, 9:46 PM EDT | Special Weather Statement | PHI | Sussex, Warren | 59 min |
| May 15, 10:08 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Sussex, Warren | 3 hr |
| May 15, 10:12 PM EDT | Special Weather Statement | PHI | Gloucester, Salem | 63 min |
| May 15, 10:16 PM EDT | Areal Flood Advisory | PHI | Cumberland, Gloucester, Salem | 3 hr |
| May 15, 10:28 PM EDT | Special Weather Statement | PHI | Cumberland | 62 min |
| May 15, 10:56 PM EDT | Special Weather Statement | PHI | Sussex | 64 min |
| May 15, 11:10 PM EDT | Special Weather Statement | PHI | Mercer | 65 min |
| May 15, 11:14 PM EDT | Areal Flood Advisory | PHI | Hunterdon | 3 hr |
| May 15, 11:31 PM EDT | Special Weather Statement | PHI | Warren | 59 min |
| May 15, 11:43 PM EDT | Special Weather Statement | PHI | Burlington | 62 min |
| May 15, 11:58 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Somerset | 62 min |
| May 16, 12:07 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 3 hr |
| May 16, 12:10 AM EDT | Special Weather Statement | PHI | Morris, Sussex, Warren | 65 min |
| May 16, 3:32 AM EDT | Small Craft Advisory | PHI | 4 days | |
| May 16, 2:33 PM EDT | Special Weather Statement | PHI | Burlington | 57 min |
| May 16, 2:50 PM EDT | Areal Flood Advisory | PHI | Burlington | 3 hr |
| May 16, 3:50 PM EDT | Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more | 60 hr |
| May 16, 4:37 PM EDT | Coastal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 4 more | 17 hr |
| May 15, 8:15 PM EDT | Special Weather Statement | PHI | Berks, Carbon | 60 min |
| May 15, 8:17 PM EDT | Special Weather Statement | PHI | Berks | 58 min |
| May 15, 8:30 PM EDT | Special Weather Statement | PHI | Berks | 60 min |
| May 15, 9:04 PM EDT | Special Weather Statement | PHI | Delaware, Montgomery | 56 min |
| May 15, 9:53 PM EDT | Special Weather Statement | PHI | Montgomery | 67 min |
| May 15, 10:06 PM EDT | Special Weather Statement | PHI | Monroe | 54 min |
| May 15, 10:52 PM EDT | Special Weather Statement | PHI | Bucks, Montgomery | 53 min |
| May 16, 3:04 PM EDT | Special Weather Statement | PHI | Chester | 56 min |
| May 16, 3:19 PM EDT | Areal Flood Advisory | PHI | Berks, Chester | 3 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2011Severe Thunderstorm Warnings in Pennsylvania, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.