Alert archive / Maryland / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 69, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 13, 2009, 3:02 PM EDT for Cecil County, Maryland; New Castle County, Delaware. It was in force for 58 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 13, 2009, 3:02 PM EDT (19:02 UTC)
- Expired
- Jun 13, 2009, 4:00 PM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties New Castle County, DE, Cecil County, MD
The radar
The Dover AFB radar (KDOX), 96 km from the middle of the area, began a volume at 19:02 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 nearest sounding before it
Washington/Dulle, VA (KIAD), launched 12:00Z, 7.0 hours before the alert went out and 168 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
- 18 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 989 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- -30 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 131902
SVRPHI
DEC003-MDC015-132000-
/O.NEW.KPHI.SV.W.0069.090613T1902Z-090613T2000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
302 PM EDT SAT JUN 13 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN CECIL COUNTY IN NORTHEAST MARYLAND...
THIS INCLUDES THE CITY OF ELKTON...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
THIS INCLUDES THE CITY OF NEWARK...
* UNTIL 400 PM EDT
* AT 301 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
A POSSIBLE SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE
HAIL. THIS STORM WAS LOCATED NEAR APPLETON...OR NEAR NEWARK...AND
MOVING SOUTHEAST AT 10 MPH. THIS STORM IS ALSO PRODUCING VERY
HEAVY RAINFALL THAT WILL MOVE OVER THE SAME AREA IN NEW CASTLE
COUNTY AS SEVERAL OTHER STORMS HAVE DONE.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
BARKSDALE AROUND 310 PM EDT...
NEWARK AROUND 325 PM EDT...
ELKTON AROUND 330 PM EDT...
GLASGOW AND 6 MILES NORTHEAST OF BRANTWOOD AROUND 345 PM EDT...
BEAR AROUND 355 PM EDT...
SAINT GEORGES...DELAWARE CITY AND 6 MILES NORTH OF MOUNT PLEASANT
AROUND 400 PM EDT...
LAT...LON 3972 7578 3976 7574 3977 7566 3980 7557
3972 7555 3965 7558 3962 7560 3960 7560
3959 7558 3948 7559 3953 7593 3971 7597
TIME...MOT...LOC 1901Z 311DEG 8KT 3969 7583
$$
EBERWINEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 4:50 PM EDT | Areal Flood Advisory | PHI | Caroline | 3 hr |
| Jun 13, 4:52 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 53 min |
| Jun 13, 4:59 PM EDT | Areal Flood Advisory | PHI | Cecil | 4 hr |
| Jun 13, 2:23 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 67 min |
| Jun 13, 2:27 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Jun 13, 5:21 PM EDT | Tornado Warning | PHI | Sussex | 54 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2009Severe Thunderstorm Warnings in Delaware, 2009Every severe thunderstorm warning in 2009
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.