Alert archive / Delaware / Areal Flood Warnings in 2016
Areal Flood Warning 29, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Oct 9, 2016, 4:16 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Maryland. It was in force for 9 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
- Oct 9, 2016, 4:16 PM EDT (20:16 UTC)
- Expired
- Oct 10, 2016, 1:15 AM EDT
- In force
- 9 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kent County, DE, Sussex County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 30 km from the middle of the area, began a volume at 20:20 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, 8.3 hours before the alert went out and 89 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
- 12 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 454 m above ground
- 0-6 km bulk shear
- 60 kt
- 0-1 km storm-relative helicity
- 216 m²/s²
- 0-3 km storm-relative helicity
- 356 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
750
WGUS41 KPHI 092016
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
416 PM EDT SUN OCT 9 2016
DEC001-005-MDC011-100515-
/O.NEW.KPHI.FA.W.0029.161009T2016Z-161010T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KENT DE-SUSSEX DE-CAROLINE MD-
416 PM EDT SUN OCT 9 2016
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR...
SOUTHWESTERN KENT COUNTY IN CENTRAL DELAWARE...
WESTERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
* UNTIL 115 AM EDT MONDAY
* AT 410 PM EDT...THE NANTICOKE RIVER AT BRIDGEVILLE WAS NEARING
FLOOD STAGE. THERE HAVE BEEN ISOLATED REPORTS OF ROAD CLOSURES.
SINCE SOME STREAMS WERE STILL RISING FROM THE RUNOFF OF THE 2 TO 4
INCHES OF RAIN THAT OCCURRED DURING THE PAST DAY OR SO, ROAD
CLOSURES AND SOME FLOODING ADJACENT STREAMS SHOULD OCCUR INTO THE
NIGHT.
* SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
GEORGETOWN...MILFORD...SEAFORD...LAUREL...FEDERALSBURG...
BRIDGEVILLE...PRESTON...ELLENDALE...HARMONY...ANDREWSVILLE...
SYCAMORE...AGNER...SMITHVILLE...GUMBORO...BLADES...GREENWOOD...
BETHEL AND FARMINGTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.
THE EXCESSIVE RUNOFF FROM THE PAST DAY OF HEAVY RAINFALL WILL CAUSE
FLOODING OF A FEW SMALL CREEKS AND STREAMS...AS WELL AS FARM AND
COUNTRY ROADS. DO NOT ATTEMPT TO TRAVEL ACROSS FLOODED ROADS. FIND
ALTERNATE ROUTES.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED MOVE UP TO HIGHER
GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3865 7571 3869 7577 3868 7580 3870 7580
3871 7584 3869 7592 3874 7598 3888 7579
3891 7541 3847 7536 3847 7569
$$
DRAG1 follow-up statement
164
WGUS81 KPHI 092338
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
738 PM EDT SUN OCT 9 2016
DEC001-005-MDC011-100515-
/O.CON.KPHI.FA.W.0029.000000T0000Z-161010T0515Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KENT DE-SUSSEX DE-CAROLINE MD-
738 PM EDT SUN OCT 9 2016
...A FLOOD WARNING REMAINS IN EFFECT UNTIL 115 AM EDT FOR
SOUTHWESTERN KENT...WESTERN SUSSEX AND SOUTHERN CAROLINE COUNTIES...
AT 730 PM EDT...THE NANTICOKE RIVER AT BRIDGEVILLE WAS ABOUT 3
INCHES ABOVE FLOOD STAGE AT THE GAGE LOCATION AND RISING AT ABOUT AN
INCH AN HOUR. THERE HAVE BEEN SEVERAL REPORTS OF ROAD CLOSURES IN
AND NEAR THE WARNING AREA, ESPECIALLY IN SUSSEX COUNTY DELAWARE.
SINCE SOME STREAMS WERE STILL RISING FROM THE RUNOFF OF THE 2 TO 4
INCHES OF RAIN THAT OCCURRED YESTERDAY AND TODAY...ROAD CLOSURES AND
SOME FLOODING ADJACENT THESE STREAMS WILL OCCUR TONIGHT.
CAUTION IS ADVISED WHEN TRAVELING AT NIGHT AND BE PREPARED TO
DETOUR AROUND ANY FLOODED ROADS.
SOME LOCATIONS THAT MAY EXPERIENCE FLOODING INCLUDE...
GEORGETOWN...MILFORD...SEAFORD...LAUREL...FEDERALSBURG...
BRIDGEVILLE...PRESTON...ELLENDALE...HARMONY...ANDREWSVILLE...
SYCAMORE...AGNER...SMITHVILLE...GUMBORO...BLADES...GREENWOOD...
BETHEL AND FARMINGTON.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLOOD WARNING MEANS THAT FLOODING HAS BEEN REPORTED. STREAM RISES
WILL BE SLOW.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE
INTO AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE
USUALLY DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS
POWERFUL ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING
FLOODED ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.
&&
LAT...LON 3865 7571 3869 7577 3868 7580 3870 7580
3871 7584 3869 7592 3874 7598 3888 7579
3891 7541 3847 7536 3847 7569
$$
DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 8, 8:20 PM EDT | Wind Advisory | PHI | Kent, Sussex | 31 hr |
| Oct 9, 12:50 AM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 8 hr |
| Oct 9, 4:46 AM EDT | Areal Flood Warning | PHI | Kent, Sussex | 8 hr |
| Oct 9, 7:36 AM EDT | Areal Flood Warning | PHI | Sussex | 5 hr |
| Oct 9, 9:07 AM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 4 hr |
Nearby
Areal Flood Warnings in Delaware, 2016Areal Flood Warnings in Maryland, 2016Every areal flood warning in 2016
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.