Alert archive / Maryland / Severe Thunderstorm Warnings in 2021

Severe Thunderstorm Warning 25, NWS Philadelphia/Mount Holly

May 4, 2021Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 4, 2021, 5:54 PM EDT for Queen Anne's County, Talbot County, Maryland. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
May 4, 2021, 5:54 PM EDT (21:54 UTC)
Expired
May 4, 2021, 6:45 PM EDT
In force
51 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 72 km from the middle of the area, began a volume at 21:57 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 9.9 hours before the alert went out and 99 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.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2021-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 82 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2021-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 115 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
82 J/kg
Mixed-layer CIN
-253 J/kg
Mixed-layer LCL
1036 m above ground
0-6 km bulk shear
41 kt
0-1 km storm-relative helicity
115 m²/s²
0-3 km storm-relative helicity
97 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

866 
WUUS51 KPHI 042154
SVRPHI
MDC035-041-042245-
/O.NEW.KPHI.SV.W.0025.210504T2154Z-210504T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
554 PM EDT Tue May 4 2021

The National Weather Service in Mount Holly NJ has issued a

* Severe Thunderstorm Warning for...
  Talbot County in eastern Maryland...
  Southwestern Queen Anne's County in northeastern Maryland...

* Until 645 PM EDT.

* At 554 PM EDT, severe thunderstorms were located along a line
  extending from Shady Side to Breezy Point, moving east at 30 mph.

  HAZARD...60 mph wind gusts and penny size hail.

  SOURCE...Radar indicated.

  IMPACT...Damage to roofs, siding, trees, and power lines is 
           possible.

* Locations impacted include...
  Easton, Talbot, Trappe, St. Michaels, Oxford, Tilghman Island,
  Hambleton, Skipton, Copperville and Cordova.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3891 7636 3883 7631 3886 7626 3879 7620
      3890 7620 3892 7598 3859 7602 3868 7620
      3876 7622 3876 7625 3871 7628 3878 7629
      3876 7632 3868 7634 3874 7634 3875 7637
      3876 7633 3882 7631 3886 7635 3884 7638
TIME...MOT...LOC 2154Z 280DEG 27KT 3884 7649 3861 7651 

HAIL...0.75IN
WIND...60MPH
 
$$

JEO
3 follow-up statements
242 
WWUS51 KPHI 042212
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
612 PM EDT Tue May 4 2021

MDC035-041-042245-
/O.CON.KPHI.SV.W.0025.000000T0000Z-210504T2245Z/
Talbot MD-Queen Anne's MD-
612 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR TALBOT AND SOUTHWESTERN QUEEN ANNE'S COUNTIES...

At 612 PM EDT, severe thunderstorms were located along a line
extending from Kent Point to 8 miles east of Breezy Point, moving
east at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Easton, Talbot, Trappe, St. Michaels, Oxford, Tilghman Island,
Hambleton, Skipton, Copperville and Cordova.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3891 7636 3883 7631 3886 7626 3879 7620
      3890 7620 3892 7598 3859 7602 3868 7620
      3876 7622 3876 7625 3871 7628 3878 7629
      3876 7632 3868 7634 3874 7634 3875 7637
      3876 7633 3882 7631 3886 7635 3884 7638
TIME...MOT...LOC 2212Z 280DEG 27KT 3882 7634 3859 7636 

HAIL...0.75IN
WIND...60MPH
 
$$

JEO
375 
WWUS51 KPHI 042233
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
633 PM EDT Tue May 4 2021

MDC035-042243-
/O.CAN.KPHI.SV.W.0025.000000T0000Z-210504T2245Z/
Queen Anne's MD-
633 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN QUEEN ANNE'S
COUNTY IS CANCELLED...

The storms which prompted the warning have moved out of the warned 
area. Therefore, the warning has been cancelled.

LAT...LON 3882 7623 3880 7621 3879 7622 3879 7619
      3886 7620 3886 7618 3888 7616 3888 7611
      3891 7611 3892 7598 3870 7601 3868 7620
      3879 7624
TIME...MOT...LOC 2233Z 280DEG 27KT 3879 7613 3856 7615 

$$

MDC041-042245-
/O.CON.KPHI.SV.W.0025.000000T0000Z-210504T2245Z/
Talbot MD-
633 PM EDT Tue May 4 2021

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR CENTRAL TALBOT COUNTY...

At 633 PM EDT, severe thunderstorms were located along a line
extending from near Easton to University Of Maryland Center For
Environmental Studies, moving east at 30 mph.

HAZARD...60 mph wind gusts and penny size hail.

SOURCE...Radar indicated.

IMPACT...Damage to roofs, siding, trees, and power lines is 
         possible.

Locations impacted include...
Easton, St. Michaels, Oxford, Hambleton, Skipton, Copperville and
Cordova.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

For your protection move to an interior room on the lowest floor of a
building.

&&

LAT...LON 3882 7623 3880 7621 3879 7622 3879 7619
      3886 7620 3886 7618 3888 7616 3888 7611
      3891 7611 3892 7598 3870 7601 3868 7620
      3879 7624
TIME...MOT...LOC 2233Z 280DEG 27KT 3879 7613 3856 7615 

HAIL...0.75IN
WIND...60MPH
 
$$

JEO
270 
WWUS51 KPHI 042238
SVSPHI

Severe Weather Statement
National Weather Service Mount Holly NJ
638 PM EDT Tue May 4 2021

MDC041-042248-
/O.EXP.KPHI.SV.W.0025.000000T0000Z-210504T2245Z/
Talbot MD-
638 PM EDT Tue May 4 2021

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TALBOT COUNTY WILL
EXPIRE AT 645 PM EDT...
    
The storms which prompted the warning have weakened below severe
limits, and have exited the warned area. Therefore, the warning will
be allowed to expire.

LAT...LON 3882 7623 3880 7621 3879 7622 3879 7619
      3886 7620 3886 7618 3888 7616 3888 7611
      3891 7611 3892 7598 3870 7601 3868 7620
      3879 7624
TIME...MOT...LOC 2238Z 280DEG 27KT 3879 7613 3856 7615 

$$

JEO

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 Philadelphia/Mount Holly wrote its last area forecast discussion before this severe thunderstorm warning went out at May 4, 3:44 PM EDT, 2 hours 10 minutes earlier.

Area forecast discussion, May 4, 3:44 PM EDT, 2 hours 10 minutes before
Area Forecast Discussion
National Weather Service Mount Holly NJ
344 PM EDT Tue May 4 2021

.SYNOPSIS...
In the wake of a warm front on Tuesday, a cold front will cross
the region on Wednesday. High pressure builds through the
region on Thursday. A trough may cross over the region on
Friday. Another low pressure system may affect the region Sunday
into Monday.

&&

.NEAR TERM /THROUGH WEDNESDAY NIGHT/...
No significant changes with the near term forecast for the late
afternoon update. Warm front has lifted north of our region as of
mid afternoon. Earlier low stratus is eroding, but as we see
clearing, we are seeing cumulus development in the warm sector.

Storms over western VA this afternoon should make progress towards
our region by early evening. It looks like the prime period for this
round of showers and storms will be between 21 and 04 Z/5 PM and
Midnight EDT. Model soundings are depicting deeper instability than
previously expected. Not sure we will realize quite as much low
level heating as what the NAM is depicting due to the expansive
cumulus development that we are seeing in our area. Additionally, I
am still concerned that with the mid level short wave ridge over our
region during this time, the subsidence could limit the coverage of
storms. None the less, those factors may be a moot point if an MCS
can become organized before progressing this far east. The primary
hazard with any storms with this round will be winds, with the
potential for damaging winds being the highest in Delmarva. Small
hail is possible, but instability may be a bit more limited within
the hail growth zone, so the threat for severe hail looks to be
limited. Low level flow will likely be relatively weak throughout
the event, so the risk for tornadoes also appears to be limited.

Once we get through this round of showers and storms, we should have
a lull in the rain until late tonight. The latest models are
depicting less separation between the prefrontal trough and the cold
front. Thus, there may not be much separation between what we were
thinking would be the second and third rounds of rain late tonight
into tomorrow. As far as hazards tomorrow, some strong wind gusts
are possible and localized downpours, but so long as the front
arrives as early as most guidance depicts it (shifting off shore by
21Z for most models), we should have a limited threat for severe
weather. The ECMWF has slowed down with the front again, but it
appears to be an outlier, so have gone with a blend of the NAM and
CMC for the timing of the front.

Temperatures tomorrow will be highly dependent on the timing of the
front. For the most part, it looks like most areas will be in the
60s and lower 70s before the front arrives. However, across southern
Delaware, which should be the last to see the cold front,
temperatures could get into the lower 80s. Wednesday night, with
cold air advection well underway, lows will be mostly in the 40s,
though in the southern Poconos, temperatures could drop into the
upper 30s. However, it looks like the winds will stay up enough to
preclude any frost development.

&&

.SHORT TERM /THURSDAY THROUGH FRIDAY/...
On Thursday, a long wave upper trough axis will be pivoting toward
the Mid-Atlantic region the an associated jet streak moving just
offshore. Resulting height falls and diffluence aloft will lead
to increasing clouds throughout the day, but the forecast
should remain dry given the dry antecedent (post-frontal)
airmass in place. The pressure gradient and thus winds will
lessen throughout the day, but breezy conditions can be expected
at least through the morning hours with northwesterly winds
gusting up to 20-25 mph. Thursday will also be the first of
likely several below normal temperature days with highs only
topping out in the mid to upper 60s. Expect light winds and lows
in the 40s Thursday night.

The main trough axis will arrive sometime Friday along with the
maximum height falls. Guidance appears fairly consistent bringing as
band of showers through the region during the afternoon or evening
hours, so we've kept widespread chance to low end likely PoP for
this period. Given the anomalously cold temperatures aloft, I
wouldn't be surprised to see some small hail or isolated lightning
with this activity. Temperatures will continue to remain below
normal with highs in the low to mid 60s.

&&

.LONG TERM /FRIDAY NIGHT THROUGH TUESDAY/...
The long term period begins late Friday with the long wave upper
trough axis moving offshore into the weekend and northwest flow
aloft becoming more zonal into early next week. At the surface, high
pressure will build across the western Atlantic with a frontal
boundary positioned south of the area. A few waves of surface low
pressure are likely to move quickly along this boundary, especially
into early next week as a few perturbations move through the zonal
flow aloft. This will result in a few periods of showers or
thunderstorms, likely favoring a diurnal trend in PoP as instability
is climatologically higher in the afternoon and evening this time of
year. The upper troughing to our north and stalled boundary just to
our south will result in a continued period of temperatures about 5-
10 degrees below normal.

&&

.AVIATION /20Z TUESDAY THROUGH SUNDAY/...
The following discussion is for KPHL, KPNE, KTTN, KABE, KRDG, KILG,
KMIV, KACY and surrounding areas.

Through 06Z...Mostly VFR conditions are expected until showers and
storms move into our region. As storms move in, brief MVFR and IFR
conditions are possible. The prime period for this round of storms
looks to be after 21Z. In the wake of the storms, expect low clouds
to fill in, with ceilings mostly between 800 and 1500 ft AGL. Winds
will be southerly or westerly south of the front with speeds 5 to 15
kt. Moderate confidence on the overall pattern, but low confidence
if any storms will directly impact a TAF site.

Late tonight...Ceilings will remain in the IFR and lower MVFR range
through the overnight hours. Some visibility restrictions are
possible with BR and showers, but expect ceilings to be the
controlling factor. Winds becoming light and variable. Moderate
confidence.

Wednesday...Starting with ceilings between IFR and lower MVFR range.
A round of showers and storms are possible between 12 and 21Z, but
expect limited additional impacts from the showers.
Winds starting light and variable, briefly becoming southerly 5 to
10 kt, then expect an abrupt shift to westerly and northwesterly of
10 to 15 kt with the cold front in the afternoon. Moderate
confidence.

Outlook...

Wednesday night...Conditions improving to VFR. Northwesterly
winds 5 to 15 kt with gusts up to 20 kt. Moderate confidence.

Thursday...VFR. NW winds 10-15 kt with gusts up to 20 kt
decreasing to around 5-10 kt after 18Z. High confidence.

Friday...Sub-VFR possible in SHRA. LGT/VRB winds, becoming W
less than 10 kt in the afternoon. Moderate confidence.

Saturday...Mostly VFR. NW winds 10-15 kt with gusts up to 20
kt decreasing after 21Z. High confidence.

&&

.MARINE...
Winds and seas should stay below SCA criteria tonight and tomorrow.
However, higher gusts will be possible in the vicinity of scattered
thunderstorms this evening. On Wednesday afternoon, an abrupt shift
to westerly or northwesterly winds is expected. Gusts could exceed
25 kt when this occurs.

Outlook...

Wednesday night...Gusts near or above 25 kt across the waters,
but not confident if it will be widespread or prolonged enough
for an SCA, so will hold off on issuing an SCA for now.

Thursday...Lingering SCA conditions possible in the morning
then sub- SCA in the afternoon.

Friday...Sub-SCA conditions. VSBY restrictions in showers.

Saturday...SCA conditions possible with gusts of 20-25 kt.

&&

.PHI WATCHES/WARNINGS/ADVISORIES...
PA...None.
NJ...None.
DE...None.
MD...None.
MARINE...None.

&&

Synopsis...Johnson
Near Term...Johnson
Short Term...Staarmann
Long Term...Staarmann
Aviation...Johnson/MPS/Staarmann
Marine...Johnson/MPS/Staarmann
Hazardous weather outlook, May 4, 2:59 PM EDT, 2 hours 55 minutes before
Hazardous Weather Outlook
National Weather Service Mount Holly NJ
0259 PM EDT Tue May 04 2021

DEZ001-051859-
New Castle-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for New Castle County in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ002-051859-
Kent-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Kent County in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ003-051859-
Inland Sussex-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for inland portions of Sussex County
in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

DEZ004-051859-
Delaware Beaches-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for the Atlantic coastal portions of
Sussex County in Delaware.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ054-051859-
Carbon-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Carbon County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ055-051859-
Monroe-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Monroe County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ060-051859-
Berks-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Berks County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ061-051859-
Lehigh-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Lehigh County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ062-051859-
Northampton-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Northampton County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ070-051859-
Delaware-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Delaware County in Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ071-051859-
Philadelphia-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Philadelphia County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ101-051859-
Western Chester-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for western Chester County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ102-051859-
Eastern Chester-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for eastern Chester County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ103-051859-
Western Montgomery-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for western Montgomery County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ104-051859-
Eastern Montgomery-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for eastern Montgomery County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ105-051859-
Upper Bucks-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for upper Bucks County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

PAZ106-051859-
Lower Bucks-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for lower Bucks County in
Pennsylvania.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ001-051859-
Sussex-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Sussex County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ007-051859-
Warren-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Warren County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ008-051859-
Morris-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Morris County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ009-051859-
Hunterdon-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Hunterdon County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ010-051859-
Somerset-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Somerset County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ012-051859-
Middlesex-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Middlesex County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ013-051859-
Western Monmouth-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for western Monmouth County in New
Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ014-051859-
Eastern Monmouth-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for eastern Monmouth County in New
Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ015-051859-
Mercer-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Mercer County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ016-051859-
Salem-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Salem County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ017-051859-
Gloucester-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Gloucester County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ018-051859-
Camden-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Camden County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ019-051859-
Northwestern Burlington-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for northwestern Burlington County in
New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ020-051859-
Ocean-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for inland portions of Ocean County
in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ021-051859-
Cumberland-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Cumberland County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ022-051859-
Atlantic-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for inland portions of Atlantic
County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ023-051859-
Cape May-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Cape May County excluding the
Atlantic coast in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ024-051859-
Atlantic Coastal Cape May-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for the Atlantic coastal portions of
Cape May County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ025-051859-
Coastal Atlantic-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for coastal portions of Atlantic
County in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ026-051859-
Coastal Ocean-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for coastal portions of Ocean County
in New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

NJZ027-051859-
Southeastern Burlington-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for southeastern Burlington County in
New Jersey.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ012-051859-
Kent MD-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Kent County in Maryland.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ015-051859-
Queen Annes-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Queen Annes County in Maryland.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ019-051859-
Talbot-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Talbot County in Maryland.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

MDZ020-051859-
Caroline-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for Caroline County in Maryland.

.DAY ONE...Through tonight.

Please go to weather.gov/phi/ehwo for more information on
potential weather hazards.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ430-051859-
Delaware Bay waters north of East Point NJ to Slaughter Beach DE-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for upper Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ431-051859-
Delaware Bay waters south of East Point NJ to Slaughter Beach DE-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for lower Delaware Bay.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ450-051859-
Coastal waters from Sandy Hook to Manasquan Inlet NJ out 20 nm-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Monmouth County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ451-051859-
Coastal waters from Manasquan Inlet to Little Egg Inlet NJ out 20 nm-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Ocean County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ452-051859-
Coastal waters from Little Egg Inlet to Great Egg Inlet NJ out 20 nm-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Atlantic County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ453-051859-
Coastal waters from Great Egg Inlet to Cape May NJ out 20 nm-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Cape May County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ454-051859-
Coastal waters from Cape May NJ to Cape Henlopen DE out 20 nm-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to the mouth of Delaware Bay out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

ANZ455-051859-
Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm-
0259 PM EDT Tue May 04 2021

This Hazardous Weather Outlook is for the Atlantic coastal waters
adjacent to Sussex County out 20 nm.

.DAY ONE...Through tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Weather spotters are encouraged to report significant weather
conditions according to standard operating procedures.

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 4, 6:50 PM EDTSpecial Weather StatementPHITalbot40 min
May 4, 7:04 PM EDTSevere Thunderstorm WarningPHICaroline, Talbot41 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2021Every severe thunderstorm warning in 2021

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.