Alert archive / Delaware / Flash Flood Warnings in 2008
Flash Flood Warning 16, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 6, 2008, 2:55 PM EDT for Kent County, Sussex County, Delaware. It was in force for 2 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
- Jul 6, 2008, 2:55 PM EDT (18:55 UTC)
- Expired
- Jul 6, 2008, 5:13 PM EDT
- In force
- 2 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Kent County, DE, Sussex County, DE
The radar
The Dover AFB radar (KDOX), 18 km from the middle of the area, began a volume at 18:56 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 |
|---|---|---|---|
| Jul 6, 3:10 PM EDT | FLASH FLOOD | Nne Milford Mill, DE | ROADWAYS FLOODED IN MILFORD HUNDRED, NEAR THE KENT-SUSSEX COUNTY BORDER. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.9 hours before the alert went out and 118 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
- 957 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 479 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 20 m²/s²
- 0-3 km storm-relative helicity
- 46 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KPHI 061855
FFWPHI
DEC001-005-062300-
/O.NEW.KPHI.FF.W.0016.080706T1855Z-080706T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
255 PM EDT SUN JUL 6 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHEASTERN KENT COUNTY IN CENTRAL DELAWARE...
NORTH CENTRAL SUSSEX COUNTY IN SOUTHERN DELAWARE...
* UNTIL 700 PM EDT
* AT 251 PM...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA. STORM
TOTAL ESTIMATES HAVE REACHED AROUND TWO AND HALF INCHES IN THE
AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BIG STONE
BEACH...WOODSIDE...VIOLA...RISING SUN...CAMDEN AND BOWERS
ADDITIONAL RAINFALL AMOUNTS OF AN INCH OR TWO ARE POSSIBLE IN THE
WARNED AREA.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.
LAT...LON 3883 7565 3910 7563 3915 7540 3911 7539
3908 7539 3903 7533 3900 7531 3898 7529
3893 7530 3885 7541
TIME...MOT...LOC 1855Z 180DEG 0KT 3896 7552
$$
TFG2 follow-up statements
000
WGUS71 KPHI 062003
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
401 PM EDT SUN JUL 6 2008
DEC001-005-062300-
/O.CON.KPHI.FF.W.0016.000000T0000Z-080706T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KENT DE-SUSSEX DE-
401 PM EDT SUN JUL 6 2008
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 700 PM EDT FOR NORTH
CENTRAL SUSSEX AND SOUTHEASTERN KENT COUNTIES...
AT 356 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATED THAT THE HEAVY RAIN IS OVER. EMERGENCY RESPONDERS AND
STATE POLICE REPORTED THERE WAS STILL A ROAD CLOSED IN MILFORD AND
ANOTHER ROAD WAS CLOSED ALONG THE MISPILLION AND MILFORD HUNDRED
BORDER. DOPPLER RADAR STORM TOTAL ESTIMATES REACHED AROUND THREE
INCHES IN THAT AREA, MOST OF WHICH FELL WITHIN AN HOUR.
FLOODING IS OCCURRING OR IS IMMINENT. MOST FLOOD RELATED DEATHS OCCUR
IN AUTOMOBILES. DO NOT ATTEMPT TO CROSS WATER COVERED BRIDGES...
DIPS...OR LOW WATER CROSSINGS. NEVER TRY TO CROSS A FLOWING STREAM...
EVEN A SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER
GROUND.
LAT...LON 3898 7559 3900 7545 3898 7535 3897 7533
3893 7531 3884 7543 3885 7547 3884 7547
3884 7555
TIME...MOT...LOC 2001Z 180DEG 0KT 3896 7552
$$
TFG000
WGUS71 KPHI 062113
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
513 PM EDT SUN JUL 6 2008
DEC001-005-062120-
/O.CAN.KPHI.FF.W.0016.000000T0000Z-080706T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
KENT DE-SUSSEX DE-
513 PM EDT SUN JUL 6 2008
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR NORTH CENTRAL
SUSSEX AND SOUTHEASTERN KENT COUNTIES...
THE CLUSTER OF SHOWERS AND THUNDERSTORMS THAT PRODUCED TORRENTIAL
RAINFALL IN THE AREA EARLIER HAS DISSIPATED. AS A RESULT, THE FLASH
FLOOD WARNING HAS BEEN CANCELLED.
LAT...LON 3898 7559 3900 7545 3898 7535 3897 7533
3893 7531 3884 7543 3885 7547 3884 7547
3884 7555
TIME...MOT...LOC 2110Z 180DEG 0KT 3896 7552
$$
GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 1:45 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 90 min |
| Jul 6, 1:46 PM EDT | Flash Flood Warning | PHI | Sussex | 5 hr |
| Jul 6, 2:41 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 28 min |
Nearby
Flash Flood Warnings in Delaware, 2008Every flash flood warning in 2008
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.