Alert archive / Maryland / Areal Flood Warnings in 2012
Areal Flood Warning 30, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Oct 29, 2012, 6:37 AM EDT for Cecil County, Maryland; New Castle County, Delaware. It was in force for 28 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
- Oct 29, 2012, 6:37 AM EDT (10:37 UTC)
- Expired
- Oct 30, 2012, 10:30 AM EDT
- In force
- 28 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties New Castle County, DE, Cecil County, MD
The radar
The Dover AFB radar (KDOX), 85 km from the middle of the area, began a volume at 10:41 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 |
|---|---|---|---|
| Oct 30, 2:40 AM EDT | COASTAL FLOOD | New Castle, DE | REEDY POINT DE 0.1 FT BELOW FLOOD OF RECORD. EVACUATION PARTS OF THE CITY OF NEW CASTLE... AUGUSTINE BEACH... NEWPORT. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Washington/Dulle, VA (KIAD), launched 00:00Z, 10.6 hours before the alert went out and 162 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
- 568 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 144 m²/s²
- 0-3 km storm-relative helicity
- 394 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
735
WGUS41 KPHI 291037
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
637 AM EDT MON OCT 29 2012
DEC003-MDC015-292230-
/O.NEW.KPHI.FA.W.0030.121029T1037Z-121029T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE DE-CECIL MD-
637 AM EDT MON OCT 29 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR...
NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
* UNTIL 630 PM EDT MONDAY
* AT 630 AM EDT...MODERATE TO HEAVY RAIN WAS CONTINUING TO MOVE
INTO NORTHERN DELAWARE AND EXTREME NORTHEASTERN MARYLAND. SINCE
SUNDAY, SOME LOCATIONS HAVE ALREADY RECEIVED 1 TO 3 INCHES OF
RAINFALL. MODERATE TO HEAVY RAIN WILL CONTINUE THROUGH THE DAY AND
INTO TONIGHT WITH TOTALS OF 6 TO 10 INCHES POSSIBLE BY THE END OF
THE DAY ON TUESDAY. AS A RESULT, THIS WARNING WILL LIKELY NEED TO
BE EXTENDED.
* FLOODING IS EXPECTED ALONG STREAMS AND CREEKS AND IN AREAS OF POOR
DRAINAGE. ROADWAY FLOODING IS ALSO ANTICIPATED. DO NOT DRIVE
THROUGH FLOOD WATERS, THE WATER MAY BE DEEPER THAN YOU THINK IT IS.
IF YOU LIVE IN A FLOOD PRONE AREA, BE PREPARED TO MOVE TO HIGHER
GROUND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER IN URBAN AREAS...
HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS.
&&
LAT...LON 3972 7578 3983 7565 3982 7544 3979 7541
3972 7547 3962 7561 3959 7560 3963 7557
3963 7556 3952 7556 3946 7559 3936 7551
3931 7558 3929 7568 3930 7576 3938 7577
3938 7605 3953 7599 3954 7607 3972 7623
$$
IOVINO3 follow-up statements
167
WGUS81 KPHI 291742
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
142 PM EDT MON OCT 29 2012
DEC003-MDC015-292230-
/O.CON.KPHI.FA.W.0030.000000T0000Z-121029T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE DE-CECIL MD-
142 PM EDT MON OCT 29 2012
...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 630 PM EDT FOR CECIL AND
NEW CASTLE COUNTIES...
AT 139 PM EDT...NATIONAL WEATHER SERVICE DOPPLER CONTINUED TO SHOW
HEAVY RAIN FALLING ACROSS THE REGION. THUS FAR...SURFACE
OBSERVATIONS AND DOPPLER RADAR ESTIMATES INDICATE THAT 3 TO 5 INCHES
OF RAIN HAS FALLEN ACROSS THE AREA.
* CREEKS AND STREAMS CONTINUE TO RISE ACROSS THE REGION. THE
ADDITIONAL HEAVY RAINFALL IS EXPECTED TO PUSH THE CREEKS AND
STREAMS OVER THEIR BANKS THIS AFTERNOON.
* FLOODING IS EXPECTED IN AREAS OF POOR DRAINAGE. ROADWAY FLOODING
IS ALSO ANTICIPATED. DO NOT DRIVE THROUGH FLOOD WATERS...AS THE
WATER MAY BE DEEPER THAN YOU THINK IT IS. IF YOU LIVE IN A FLOOD
PRONE AREA...BE PREPARED TO MOVE TO HIGHER GROUND.
A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER IN URBAN AREAS...
HIGHWAYS...STREETS AND UNDERPASSES AS WELL AS OTHER POOR DRAINAGE
AREAS AND LOW LYING SPOTS.
EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE ELEVATED LEVELS ON
SMALL CREEKS AND STREAMS...AND PONDING OF WATER ON COUNTRY ROADS AND
FARMLAND ALONG THE BANKS OF CREEKS AND STREAMS.
&&
LAT...LON 3972 7578 3983 7565 3982 7544 3979 7541
3972 7547 3962 7561 3959 7560 3963 7557
3963 7556 3952 7556 3946 7559 3936 7551
3931 7558 3929 7568 3930 7576 3938 7577
3938 7605 3953 7599 3954 7607 3972 7623
$$
HAYES417
WGUS41 KPHI 292108
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
508 PM EDT MON OCT 29 2012
DEC003-MDC015-300630-
/O.EXT.KPHI.FA.W.0030.000000T0000Z-121030T0630Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE DE-CECIL MD-
508 PM EDT MON OCT 29 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR...
NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
* UNTIL 230 AM EDT TUESDAY
* AT 503 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
HEAVY RAIN FALLING ACROSS PORTIONS OF THE AREA. THUS FAR...SURFACE
OBSERVATIONS AND DOPPLER RADAR ESTIMATES INDICATED THAT 4 TO 8
INCHES OF RAIN HAD FALLEN ACROSS THE AREA. ANOTHER 1 TO 3 INCHES OF
RAIN CAN BE EXPECTED.
* STREAMS, CREEKS AND RIVERS IN THE AREA CONTINUE TO RISE. THE
ADDITIONAL RAINFALL WILL PUSH STREAMS, CREEKS AND RIVERS OUT OF
THEIR BANKS. THE WHITE CLAY AND CHRISTINA RIVERS ARE ALREADY OUT
OF THEIR BANKS.
* FLOODING IS EXPECTED IN AREAS OF POOR DRAINAGE. ROADWAY FLOODING
IS ALSO ANTICIPATED. DO NOT DRIVE THROUGH FLOOD WATERS...AS THE
WATER MAY BE DEEPER THAN YOU THINK IT IS. IF YOU LIVE IN A FLOOD
PRONE AREA...BE PREPARED TO MOVE TO HIGHER GROUND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAN YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.
&&
LAT...LON 3972 7578 3983 7565 3982 7544 3979 7541
3972 7547 3962 7561 3959 7560 3963 7557
3963 7556 3952 7556 3946 7559 3936 7551
3931 7558 3929 7568 3930 7576 3938 7577
3938 7605 3953 7599 3954 7607 3972 7623
$$
KRUZDLO529
WGUS41 KPHI 300439
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1239 AM EDT TUE OCT 30 2012
DEC003-MDC015-301430-
/O.EXT.KPHI.FA.W.0030.000000T0000Z-121030T1430Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NEW CASTLE DE-CECIL MD-
1239 AM EDT TUE OCT 30 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLOOD WARNING FOR...
NEW CASTLE COUNTY IN NORTHERN DELAWARE...
CECIL COUNTY IN NORTHEAST MARYLAND...
* UNTIL 1030 AM EDT
* AT 1235 AM EDT...SURFACE OBSERVATIONS AND DOPPLER RADAR INDICATED
THAT 5 TO 10 INCHES OF RAIN HAD FALLEN ACROSS THE REGION. RISES
CONTINUED ON CREEKS AND STREAMS.
* STREAMS, CREEKS AND RIVERS IN THE AREA REMAINED IN FLOOD...
INCLUDING THE WHITE CLAY AND CHRISTINA RIVERS.
* FLOODING IS EXPECTED IN AREAS OF POOR DRAINAGE. ROADWAY FLOODING
IS ALSO ANTICIPATED. DO NOT DRIVE THROUGH FLOOD WATERS...AS THE
WATER MAY BE DEEPER THAN YOU THINK IT IS. IF YOU LIVE IN A FLOOD
PRONE AREA...BE PREPARED TO MOVE TO HIGHER GROUND.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLOODING IS OBSERVED ACT QUICKLY. MOVE UP TO
HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS SUBJECT TO
FLOODING WHEN WATER BEGINS RISING.
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.
DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAN YOU THINK. TURN AROUND AND FIND AN ALTERNATE ROUTE.
&&
LAT...LON 3972 7578 3983 7565 3982 7544 3979 7541
3972 7547 3962 7561 3959 7560 3963 7557
3963 7556 3952 7556 3946 7559 3936 7551
3931 7558 3929 7568 3930 7576 3938 7577
3938 7605 3953 7599 3954 7607 3972 7623
$$
KRUZDLOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 29, 3:12 AM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 3 hr |
| Oct 29, 6:10 AM EDT | Areal Flood Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 28 hr |
| Oct 29, 8:32 AM EDT | River Flood Warning | PHI | New Castle | 21 hr |
| Oct 29, 11:15 AM EDT | River Flood Warning | PHI | New Castle | 26 hr |
| Oct 29, 11:42 AM EDT | River Flood Warning | PHI | New Castle | 18 hr |
| Oct 29, 11:48 AM EDT | River Flood Warning | PHI | New Castle | 18 hr |
| Oct 29, 2:46 PM EDT | Special Weather Statement | PHI | Kent, Sussex | 119 min |
| Oct 29, 4:09 PM EDT | Special Weather Statement | PHI | Sussex | 111 min |
| Oct 29, 4:28 PM EDT | Special Weather Statement | PHI | Kent, New Castle | 2 hr |
Nearby
Areal Flood Warnings in Maryland, 2012Areal 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.