Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 112, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 20, 2017, 8:44 PM EDT for Monmouth County, New Jersey. It was in force for 31 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
- Jul 20, 2017, 8:44 PM EDT (00:44 UTC)
- Expired
- Jul 20, 2017, 9:15 PM EDT
- In force
- 31 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
County Monmouth County, NJ
The radar
The Philadelphia radar (KDIX), 60 km from the middle of the area, began a volume at 00:48 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 20, 8:54 PM EDT | MARINE TSTM WIND 44 | Sandy Hook Nos Buoy, NJ | |
| Jul 20, 8:55 PM EDT | MARINE TSTM WIND 42 | Port Monmouth, NJ |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 20, 5:03 PM EDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.7 hours before the alert went out and 112 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
- 1393 J/kg
- Mixed-layer CIN
- -57 J/kg
- Mixed-layer LCL
- 1229 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 118 m²/s²
- 0-3 km storm-relative helicity
- 116 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 4.1
The text
As transmitted.
732
WUUS51 KPHI 210044
SVRPHI
NJC025-210115-
/O.NEW.KPHI.SV.W.0112.170721T0044Z-170721T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
844 PM EDT THU JUL 20 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Monmouth County in central New Jersey...
* Until 915 PM EDT
* At 844 PM EDT, a severe thunderstorm was located over Keansburg, or
near Sandy Hook, moving east at 30 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
* This severe thunderstorm will be near,
Navesink around 850 PM EDT.
Long Branch, Sandy Hook and Highlands around 855 PM EDT.
Other locations impacted by this severe thunderstorm include Rumson,
Little Silver, North Middletown, Shrewsbury and Oceanport.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.
&&
LAT...LON 4031 7398 4036 7420 4046 7418 4045 7416
4045 7413 4041 7399 4041 7398 4048 7402
4047 7399 4043 7397
TIME...MOT...LOC 0044Z 282DEG 26KT 4043 7409
HAIL...<.75IN
WIND...60MPH
$$
Robertson2 follow-up statements
763
WWUS51 KPHI 210100
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
900 PM EDT THU JUL 20 2017
NJC025-210115-
/O.CON.KPHI.SV.W.0112.000000T0000Z-170721T0115Z/
Monmouth NJ-
900 PM EDT THU JUL 20 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 915 PM EDT
FOR NORTHEASTERN MONMOUTH COUNTY...
At 859 PM EDT, a severe thunderstorm was located over Highlands, or
over Sandy Hook, moving east at 25 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Expect damage to trees and power lines.
Locations impacted include...
Long Branch, Sandy Hook, Red Bank, Highlands, Navesink, Rumson,
Little Silver, Oceanport and Shrewsbury.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.
&&
LAT...LON 4031 7398 4033 7407 4042 7405 4041 7400
4041 7398 4048 7401 4047 7399 4043 7397
TIME...MOT...LOC 0059Z 285DEG 22KT 4040 7397
HAIL...<.75IN
WIND...60MPH
$$
Robertson105
WWUS51 KPHI 210106
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
906 PM EDT THU JUL 20 2017
NJC025-210115-
/O.EXP.KPHI.SV.W.0112.000000T0000Z-170721T0115Z/
Monmouth NJ-
906 PM EDT THU JUL 20 2017
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONMOUTH COUNTY
WILL EXPIRE AT 915 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore the warning will be allowed to expire. However gusty winds
and heavy rain are still possible with this thunderstorm.
A severe thunderstorm watch remains in effect until 1000 PM EDT for
central New Jersey.
LAT...LON 4031 7398 4033 7407 4042 7405 4041 7400
4041 7398 4048 7401 4047 7399 4043 7397
TIME...MOT...LOC 0105Z 282DEG 26KT 4039 7391
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 20, 8:33 PM EDT | Special Marine Warning | PHI | 57 min | |
| Jul 20, 8:40 PM EDT | Special Weather Statement | PHI | Monmouth, Ocean | 35 min |
| Jul 20, 8:47 PM EDT | Special Marine Warning | PHI | 58 min | |
| Jul 20, 9:14 PM EDT | Special Marine Warning | PHI | 16 min | |
| Jul 20, 9:33 PM EDT | Special Marine Warning | PHI | 57 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2017Every severe thunderstorm warning in 2017
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.