Alert archive / Delaware / Flash Flood Warnings in 2015
Flash Flood Warning 9, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 1, 2015, 4:35 PM EDT for New Castle 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 1, 2015, 4:35 PM EDT (20:35 UTC)
- Expired
- Jun 1, 2015, 7:30 PM EDT
- In force
- 3 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
County New Castle County, DE
The radar
The Dover AFB radar (KDOX), 100 km from the middle of the area, began a volume at 20:36 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 1, 5:30 PM EDT | FLASH FLOOD | Newark, DE | VEHICLES STUCK IN WATER IN CHRISTIANA AND NEWARK |
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, 8.6 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
- 355 J/kg
- Mixed-layer CIN
- -69 J/kg
- Mixed-layer LCL
- 779 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
144
WGUS51 KPHI 012035
FFWPHI
DEC003-012330-
/O.NEW.KPHI.FF.W.0009.150601T2035Z-150601T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
435 PM EDT MON JUN 1 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN NEW CASTLE COUNTY IN NORTHERN DELAWARE...
* UNTIL 730 PM EDT
* AT 434 PM EDT...DOPPLER RADAR INDICATED A THUNDERSTORM PRODUCING
HEAVY RAIN ACROSS THE WARNED AREA. UP TO ONE INCH OF RAIN HAS
ALREADY FALLEN. FLASH FLOODING IS EXPECTED.
* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WILMINGTON...NEWARK...ELSMERE...NEW CASTLE...NEWPORT...ARDEN...
BEAR...TALLEYVILLE...WILMINGTON MANOR...GREENVILLE...PIKE CREEK...
HOCKESSIN...NORTH STAR...ASHLAND...STANTON...GLASGOW...
BELLEFONTE...ARDENTOWN...ARDENCROFT AND BROOKSIDE.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO TWO INCHES ARE POSSIBLE IN THE
WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOVE TO HIGHER GROUND NOW. ACT QUICKLY TO PROTECT YOUR LIFE AND
PROPERTY.
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3982 7567 3984 7554 3980 7541 3977 7546
3972 7548 3972 7552 3963 7561 3961 7561
3961 7556 3960 7562 3962 7579 3972 7579
$$
KRUZDLO2 follow-up statements
120
WGUS71 KPHI 012144
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
544 PM EDT MON JUN 1 2015
DEC003-012330-
/O.CON.KPHI.FF.W.0009.000000T0000Z-150601T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE DE-
544 PM EDT MON JUN 1 2015
...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 730 PM EDT FOR
NORTHERN NEW CASTLE COUNTY...
AT 541 PM EDT...DOPPLER RADAR INDICATED THUNDERSTORMS CONTINUED TO
PRODUCE HEAVY RAIN ACROSS THE WARNED AREA. UP TO THREE INCHES OF
RAIN HAVE ALREADY FALLEN. FLASH FLOODING IS EXPECTED.
SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
WILMINGTON...NEWARK...ELSMERE...NEW CASTLE...NEWPORT...ARDEN...
BEAR...TALLEYVILLE...WILMINGTON MANOR...GREENVILLE...PIKE CREEK...
HOCKESSIN...NORTH STAR...ASHLAND...STANTON...GLASGOW...BELLEFONTE...
ARDENTOWN...ARDENCROFT AND BROOKSIDE.
ADDITIONAL RAINFALL IS EXPECTED OVER THE NEXT HOUR AS MORE
THUNDERSTORMS MOVE ACROSS THE WARNED AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TURN AROUND...DON'T DROWN WHEN ENCOUNTERING FLOODED ROADS. MOST FLOOD
DEATHS OCCUR IN VEHICLES.
&&
LAT...LON 3982 7567 3984 7554 3980 7541 3977 7546
3972 7548 3972 7552 3963 7561 3961 7561
3961 7556 3960 7562 3962 7579 3972 7579
$$
KRUZDLO756
WGUS71 KPHI 012324
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
724 PM EDT MON JUN 1 2015
DEC003-012333-
/O.EXP.KPHI.FF.W.0009.000000T0000Z-150601T2330Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE DE-
724 PM EDT MON JUN 1 2015
...THE FLASH FLOOD WARNING FOR NORTHERN NEW CASTLE COUNTY WILL EXPIRE
AT 730 PM EDT...
FLOOD WATERS HAVE RECEDED...AND ARE NO LONGER EXPECTED TO POSE A
THREAT TO LIFE OR PROPERTY. PLEASE CONTINUE TO HEED ANY ROAD
CLOSURES. LIGHT RAIN WILL CONTINUE TO FALL THROUGH THE EVENING.
LAT...LON 3982 7567 3984 7554 3980 7541 3977 7546
3972 7548 3972 7552 3963 7561 3961 7561
3961 7556 3960 7562 3962 7579 3972 7579
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 1, 2:17 AM EDT | Special Weather Statement | PHI | New Castle | 43 min |
| Jun 1, 3:13 AM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Jun 1, 4:20 AM EDT | Flash Flood Watch | PHI | Kent, New Castle, Sussex | 26 hr |
| Jun 1, 4:32 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 43 min |
| Jun 1, 5:27 PM EDT | Areal Flood Advisory | PHI | New Castle | 3 hr |
| Jun 1, 6:11 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 6 hr |
| Jun 1, 6:29 PM EDT | Flash Flood Warning | PHI | New Castle | 3 hr |
| Jun 1, 6:53 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 37 min |
| Jun 1, 7:54 PM EDT | Special Weather Statement | PHI | Sussex | 111 min |
Nearby
Flash Flood Warnings in Delaware, 2015Every flash flood warning in 2015
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.