Alert archive / Maryland / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 59, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 28, 2013, 6:09 PM EDT for Caroline County, Maryland; Sussex County, Delaware. It was in force for 96 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
- Jun 28, 2013, 6:09 PM EDT (22:09 UTC)
- Expired
- Jun 28, 2013, 7:45 PM EDT
- In force
- 96 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Sussex County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 23 km from the middle of the area, began a volume at 22:11 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 28, 2:08 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.2 hours before the alert went out and 78 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
- 292 J/kg
- Mixed-layer CIN
- -75 J/kg
- Mixed-layer LCL
- 914 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted, in the capitals the NWS used until 2016.
520
WUUS51 KPHI 282209
SVRPHI
DEC005-MDC011-282345-
/O.NEW.KPHI.SV.W.0059.130628T2209Z-130628T2345Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
609 PM EDT FRI JUN 28 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND...
SOUTHERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 745 PM EDT
* AT 607 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM. THE STORM WAS NEAR ELDORADO...MOVING EAST AT
25 MPH. THIS STORM IS CAPABLE OF PRODUCING UP TO ONE INCH DIAMETER
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SEAFORD AROUND 630 PM EDT...
SEAFORD AROUND 635 PM EDT...
LAUREL AROUND 640 PM EDT...
DELMAR AROUND 645 PM EDT...
SYCAMORE AROUND 650 PM EDT...
GEORGETOWN AROUND 700 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
NEARLY CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS
SEVERE THUNDERSTORM. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...IF
YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY
LIGHTNING.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEASTERN PENNSYLVANIA.
&&
LAT...LON 3846 7569 3863 7571 3868 7576 3867 7579
3869 7581 3870 7587 3875 7585 3867 7512
3865 7511 3864 7510 3866 7507 3845 7505
TIME...MOT...LOC 2208Z 280DEG 21KT 3860 7581
$$
MEOLA1 follow-up statement
844
WWUS51 KPHI 282235
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
635 PM EDT FRI JUN 28 2013
DEC005-MDC011-282245-
/O.CAN.KPHI.SV.W.0059.000000T0000Z-130628T2345Z/
CAROLINE MD-SUSSEX DE-
635 PM EDT FRI JUN 28 2013
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SUSSEX AND
SOUTHEASTERN CAROLINE COUNTIES IS CANCELLED...
THE STORM HAS WEAKENED TO BELOW SEVERE LIMITS...THEREFORE THE SEVERE
THUNDERSTORM WARNING HAS BEEN CANCELLED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT FRIDAY
EVENING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEASTERN PENNSYLVANIA.
LAT...LON 3846 7569 3863 7571 3868 7576 3867 7579
3869 7581 3870 7587 3875 7585 3867 7512
3865 7511 3864 7510 3866 7507 3845 7505
TIME...MOT...LOC 2235Z 280DEG 21KT 3857 7561
$$
MEOLAThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 28, 3:19 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 41 min |
| Jun 28, 4:20 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 55 min |
| Jun 28, 4:27 PM EDT | Tornado Warning | PHI | Cecil | 33 min |
| Jun 28, 4:47 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's, Talbot | 73 min |
| Jun 28, 4:50 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 55 min |
| Jun 28, 5:09 PM EDT | Flash Flood Warning | PHI | Cecil | 11 hr |
| Jun 28, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 46 min |
| Jun 28, 3:33 PM EDT | Areal Flood Advisory | PHI | New Castle | 117 min |
| Jun 28, 6:48 PM EDT | River Flood Warning | PHI | New Castle | 9 hr |
| Jun 28, 6:48 PM EDT | River Flood Warning | PHI | New Castle | 8 hr |
Nearby
Severe Thunderstorm Warnings in Maryland, 2013Severe Thunderstorm Warnings in Delaware, 2013Every severe thunderstorm warning in 2013
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.