Alert archive / Delaware / Flash Flood Warnings in 2013
Flash Flood Warning 48, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 1, 2013, 2:57 PM EDT for Sussex County, Delaware. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 1, 2013, 2:57 PM EDT (18:57 UTC)
- Expired
- Aug 1, 2013, 6:00 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County Sussex County, DE
The radar
The Dover AFB radar (KDOX), 38 km from the middle of the area, began a volume at 18:58 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 7.0 hours before the alert went out and 63 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
- 23 J/kg
- Mixed-layer CIN
- -42 J/kg
- Mixed-layer LCL
- 972 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 66 m²/s²
- 0-3 km storm-relative helicity
- 167 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
807
WGUS51 KPHI 011857
FFWPHI
DEC005-012200-
/O.NEW.KPHI.FF.W.0048.130801T1857Z-130801T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
257 PM EDT THU AUG 1 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTH CENTRAL SUSSEX COUNTY...
* UNTIL 600 PM EDT...
* AT 254 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR ESTIMATES
AND RAIN GAGE REPORTS INDICATED VERY HEAVY RAIN FROM A THUNDERSTORM
OVER SOUTH CENTRAL SUSSEX COUNTY. DEOS OBSERVATION STATION IN
DELMAR HAS REPORTED OVER 2.5 INCHES IN THE PAST 1.5 HOURS.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RURAL AREAS
OF SOUTH CENTRAL SUSSEX COUNTY.
ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES ARE POSSIBLE IN THE WARNED
AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. NEVER ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN
AUTOMOBILE. TURN AROUND DON'T DROWN!
&&
LAT...LON 3845 7562 3857 7562 3857 7526 3845 7526
3845 7552
$$
FORECASTER: HEAVENERThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 3:42 AM EDT | Flash Flood Watch | PHI | New Castle | 14 hr |
| Aug 1, 10:50 AM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Aug 1, 11:57 AM EDT | River Flood Warning | PHI | New Castle | 3 hr |
| Aug 1, 12:17 PM EDT | Special Weather Statement | PHI | Kent | 43 min |
| Aug 1, 12:48 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 3 hr |
| Aug 1, 12:50 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 40 min |
| Aug 1, 1:12 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 48 min |
| Aug 1, 2:35 PM EDT | Areal Flood Advisory | PHI | Sussex | 3 hr |
| Aug 1, 5:58 PM EDT | Flash Flood Warning | PHI | Sussex | 4 hr |
Nearby
Flash Flood Warnings in Delaware, 2013Every flash flood 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.