Alert archive / Delaware / Areal Flood Warnings in 2012
Areal Flood Warning 35, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Oct 30, 2012, 9:41 AM EDT for Sussex County, Delaware. It was in force for 12 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 30, 2012, 9:41 AM EDT (13:41 UTC)
- Expired
- Oct 30, 2012, 9:30 PM EDT
- In force
- 12 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), 22 km from the middle of the area, began a volume at 13:44 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, 1.7 hours before the alert went out and 83 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 645 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 35 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
246
WGUS41 KPHI 301341
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
941 AM EDT TUE OCT 30 2012
DEC005-310130-
/O.NEW.KPHI.FA.W.0035.121030T1341Z-121031T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX DE-
941 AM EDT TUE OCT 30 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR...
WESTERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 930 PM EDT TUESDAY
* AT 930 AM EDT...MINOR FLOODING WAS CONTINUING TO OCCUR IN WESTERN
SUSSEX COUNTY AS A RESULT OF THE FIVE TO NINE AND A HALF INCHES OF
RAIN THAT FELL THROUGHOUT MUCH OF THE COUNTY.
* MINOR FLOODING WAS INDICATED ALONG THE NANTICOKE RIVER AND IT
TRIBUTARIES THIS MORNING. THE MINOR FLOODING IS EXPECTED TO
CONTINUE INTO THIS EVENING.
THIS FLOOD WARNING MEANS THAT FLOODING IS OCCURRING. DO NOT DRIVE
THROUGH FLOOD WATERS, THE WATER MAY BE DEEPER THAN YOU THINK IT IS.
LAT...LON 3845 7569 3847 7570 3883 7572 3884 7556
3890 7549 3892 7543 3845 7539
$$
IOVINO1 follow-up statement
302
WGUS81 KPHI 310141
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
941 PM EDT TUE OCT 30 2012
DEC005-310146-
/O.EXP.KPHI.FA.W.0035.000000T0000Z-121031T0130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX DE-
941 PM EDT TUE OCT 30 2012
...THE FLOOD WARNING HAS EXPIRED FOR WESTERN SUSSEX COUNTY...
THE NANTICOKE RIVER AT BRIDGEVILLE HAS FALLEN BELOW ITS FLOOD
STAGE...THEREFORE THE FLOOD WARNING FOR WESTERN SUSSEX COUNTY HAS
BEEN ALLOWED TO EXPIRE.
LAT...LON 3845 7569 3847 7570 3883 7572 3884 7556
3890 7549 3892 7543 3845 7539
$$
ROBERTSONThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 30, 6:03 AM EDT | Coastal Flood Advisory | PHI | Kent, New Castle, Sussex | 20 hr |
| Oct 30, 8:48 AM EDT | Wind Advisory | PHI | Kent, New Castle, Sussex | 3 hr |
Nearby
Areal Flood Warnings in Delaware, 2012Every areal flood warning in 2012
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.