Alert archive / Maryland / Flash Flood Warnings in 2013
Flash Flood Warning 13, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 18, 2013, 2:29 PM EDT for 5 counties in Maryland; Kent County, New Castle County, Sussex County, Delaware. It was in force for 3 hr. 1 report 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
- Jun 18, 2013, 2:29 PM EDT (18:29 UTC)
- Expired
- Jun 18, 2013, 5:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kent County, DE, New Castle County, DE, Sussex County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 57 km from the middle of the area, began a volume at 18:29 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 |
|---|---|---|---|
| Jun 18, 4:30 PM EDT | FLASH FLOOD | Dover, DE | NUMEROUS REPORTS OF FLOODING IN KENT COUNTY |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.5 hours before the alert went out and 51 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
- 811 J/kg
- Mixed-layer CIN
- -63 J/kg
- Mixed-layer LCL
- 833 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 34 m²/s²
- 0-3 km storm-relative helicity
- 89 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.3
The text
As transmitted, in the capitals the NWS used until 2016.
422
WGUS51 KPHI 181829
FFWPHI
DEC001-003-005-MDC011-015-029-035-041-182130-
/O.NEW.KPHI.FF.W.0013.130618T1829Z-130618T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
229 PM EDT TUE JUN 18 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHERN NEW CASTLE COUNTY...
SOUTHEASTERN CECIL COUNTY...
KENT COUNTY...
NORTHERN CAROLINE COUNTY...
NORTHWESTERN SUSSEX COUNTY...
QUEEN ANNE'S COUNTY...
NORTHERN TALBOT COUNTY...
* UNTIL 530 PM EDT...
* AT 221 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM AN AREA THUNDERSTORMS OVER EXTREME
NORTHWESTERN SUSSEX...KENT...NORTHERN CAROLINE...NORTHERN
TALBOT...QUEEN ANNE'S...SOUTHEASTERN CECIL AND SOUTHERN NEW
CASTLE COUNTIES.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DOVER.
ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 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!
DRIVING INTO FLOOD WATERS COULD COST YOU YOUR LIFE...OR AT THE VERY
LEAST...THOUSANDS OF DOLLARS OF VEHICLE DAMAGE. NEARLY HALF OF ALL
FLASH FLOOD FATALITIES ARE AUTO RELATED. TURN AROUND...DON'T DROWN.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. TURN AROUND...DON'T DROWN! NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE
RISING WATER MOVE UP TO HIGHER GROUND.
&&
LAT...LON 3905 7630 3900 7621 3917 7629 3938 7611
3940 7552 3926 7539 3906 7539 3893 7530
3872 7620 3886 7627 3887 7626 3883 7624
3881 7621 3892 7622 3894 7624 3890 7624
3901 7634
$$
FORECASTER:POThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 17, 8:16 PM EDT | Special Weather Statement | PHI | Cecil | 119 min |
| Jun 17, 8:28 PM EDT | Areal Flood Advisory | PHI | Cecil | 107 min |
| Jun 17, 9:37 PM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's | 6 hr |
| Jun 17, 9:51 PM EDT | Special Weather Statement | PHI | Kent | 114 min |
| Jun 17, 10:12 PM EDT | Flash Flood Warning | PHI | Kent | 4 hr |
| Jun 17, 10:40 PM EDT | Special Weather Statement | PHI | Queen Anne's | 50 min |
| Jun 18, 12:14 PM EDT | Areal Flood Advisory | PHI | Cecil | 3 hr |
| Jun 18, 1:32 PM EDT | Areal Flood Advisory | PHI | Kent | 3 hr |
| Jun 18, 4:23 PM EDT | Flash Flood Warning | PHI | Caroline | 4 hr |
| Jun 18, 2:10 PM EDT | Flash Flood Warning | PHI | New Castle | 3 hr |
| Jun 18, 4:08 PM EDT | River Flood Warning | PHI | New Castle | 2 hr |
| Jun 18, 4:20 PM EDT | Special Weather Statement | PHI | Sussex | 70 min |
Nearby
Flash Flood Warnings in Maryland, 2013Flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.