Alert archive / Maryland / Coastal Flood Statements in 2011
Coastal Flood Statement 47, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this coastal flood statement at Oct 20, 2011, 4:22 AM EDT for 4 states. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Oct 20, 2011, 4:22 AM EDT (08:22 UTC)
- Expired
- Oct 20, 2011, 8:25 AM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
Counties New Castle County, DE, Caroline County, MD, Cecil County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Dover AFB radar (KDOX), 75 km from the middle of the area, began a volume at 08:22 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
Washington/Dulle, VA (KIAD), launched 00:00Z, 8.4 hours before the alert went out and 172 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
- 43 J/kg
- Mixed-layer CIN
- -217 J/kg
- Mixed-layer LCL
- 466 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 282 m²/s²
- 0-3 km storm-relative helicity
- 346 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.0
The text
As transmitted, in the capitals the NWS used until 2016.
749 WHUS41 KPHI 200822 CFWPHI COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 422 AM EDT THU OCT 20 2011 MDZ008-012-015-200930- /O.CON.KPHI.CF.Y.0060.000000T0000Z-111020T0900Z/ CECIL-KENT MD-QUEEN ANNES- 422 AM EDT THU OCT 20 2011 ...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 5 AM EDT EARLY THIS MORNING... * LOCATION...THE NORTHERN MARYLAND EASTERN SHORE OF CHESAPEAKE BAY. * COASTAL FLOODING...ANY MINOR TIDAL FLOODING IS ABOUT TO END. * TIMING...HIGH TIDE HAS OCCURRED OR WAS OCCURRING NOW. * IMPACTS...LOCATIONS SUSCEPTIBLE TO TIDAL FLOODING MAY STILL EXPERIENCE MINOR TIDAL FLOODING. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD ADVISORY INDICATES THAT MINOR TIDAL FLOODING IS ANTICIPATED. MINOR TIDAL FLOODING OFTEN RESULTS IN SOME ROADS CLOSURES. USUALLY...THE MOST VULNERABLE ROADWAYS WILL FLOOD. DO NOT LEAVE YOUR VEHICLE AT A LOCATION THAT IS PRONE TO TIDAL FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN YOU THINK IT IS. YOU WILL BE PUTTING YOURSELF IN DANGER AND YOUR VEHICLE MAY BE DAMAGED...LEADING TO COSTLY REPAIR. FOR A LIST OF THE IMPACT OF DIFFERENT TIDE HEIGHTS IN YOUR COUNTY PLEASE GO TO WWW.WEATHER.GOV/PHI/TIDES.HTM (ALL IN LOWER CASE). && $$ DEZ001-NJZ016>019-PAZ070-071-201300- /O.NEW.KPHI.CF.S.0047.111020T0822Z-111020T1300Z/ NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- 422 AM EDT THU OCT 20 2011 * LOCATION...FROM FAR NORTHERN DELAWARE AND SOUTHWEST NEW JERSEY INTO THE PHILADELPHIA AREA. * COASTAL FLOODING...THERE IS A CHANCE THAT THE HIGHEST TIDE MAY BE DELAYED AN HOUR THIS MORNING AS WINDS TURN SOUTH AND BECOME GUSTY TO 25 TO 30 MPH. THIS MIGHT FORCE TIDES TO APPROACH THE MINOR FLOOD THRESHOLD...ESPECIALLY NEAR PHILADELPHIA AROUND 8 AM OR 9 AM. THE RISK OF ANY FLOODING IN COASTAL NORTHERN DELAWARE AND SOUTHWEST NEW JERSEY SOUTH OF PHILADELPHIA APPEARS TO BE LESS THAN FURTHER NORTH. * IMPACTS...WIDESPREAD MINOR TIDAL FLOODING IS NOT EXPECTED AT THIS TIME. $$ DRAG
3 follow-up statements
402 WHUS41 KPHI 200921 CFWPHI COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 521 AM EDT THU OCT 20 2011 MDZ008-012-015-201030- /O.EXP.KPHI.CF.Y.0060.000000T0000Z-111020T0900Z/ CECIL-KENT MD-QUEEN ANNES- 521 AM EDT THU OCT 20 2011 ...COASTAL FLOOD ADVISORY HAS EXPIRED... THERE MAY BE A RENEWED EPISODE OF MARGINAL MINOR TIDAL RELATED INUNDATION FLOODING LATE THIS MORNING AND AFTERNOON IF STRONG SOUTH TO SOUTHWEST WINDS DEVELOPING THIS MORNING...CAN PERSIST INTO THE AFTERNOON. TIDES WERE STILL QUITE HIGH AT DAWN BUT JUST BELOW FLOOD STAGE. $$ DEZ001-NJZ016>019-PAZ070-071-201300- /O.CON.KPHI.CF.S.0047.000000T0000Z-111020T1300Z/ NEW CASTLE-SALEM-GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON- DELAWARE-PHILADELPHIA- 521 AM EDT THU OCT 20 2011 * LOCATION...FROM FAR NORTHERN DELAWARE AND SOUTHWEST NEW JERSEY INTO THE PHILADELPHIA AREA. * COASTAL FLOODING...THERE IS A CHANCE THAT THE HIGHEST TIDE MAY BE DELAYED AN HOUR THIS MORNING AS WINDS TURN SOUTH AND BECOME GUSTY TO 25 TO 30 MPH. THIS MIGHT FORCE TIDES TO APPROACH THE MINOR FLOOD THRESHOLD...ESPECIALLY NEAR PHILADELPHIA AROUND 8 AM OR 9 AM. THE RISK OF ANY FLOODING IN COASTAL NORTHERN DELAWARE AND SOUTHWEST NEW JERSEY SOUTH OF PHILADELPHIA APPEARS TO BE LESS THAN FURTHER NORTH. * IMPACTS...WIDESPREAD MINOR TIDAL FLOODING IS NOT EXPECTED AT THIS TIME. $$
959 WHUS41 KPHI 201009 CFWPHI COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 609 AM EDT THU OCT 20 2011 DEZ001-NJZ016-201115- /O.CAN.KPHI.CF.S.0047.000000T0000Z-111020T1300Z/ NEW CASTLE-SALEM- 609 AM EDT THU OCT 20 2011 THE RISK OF ANY MARGINAL COASTAL FLOODING HAS DIMINISHED FOR NEW CASTLE COUNTY DELAWARE AND SALEM COUNTY NEW JERSEY. $$ MDZ008-012-015-019-020-201800- /O.EXB.KPHI.CF.S.0047.111020T1300Z-111020T1800Z/ CECIL-KENT MD-QUEEN ANNES-TALBOT-CAROLINE- 609 AM EDT THU OCT 20 2011 * LOCATION...MARYLAND'S EASTERN SHORE FROM THE VICINITY OF CAMBRIDGE NORTHWARD THROUGH TOLCHESTER BEACH TO CECIL COUNTY. * COASTAL FLOODING...AN EPISODE OF MINOR COASTAL FLOODING IS POSSIBLE LATER THIS MORNING INTO EARLY THIS AFTERNOON. * IMPACTS...BEST ESTIMATE AT THIS TIME IS TO PREPARE FOR THE POSSIBILITY OF SOME MINOR ROAD FLOODING IN THE TYPICALLY VULNERABLE LOCATIONS. * CONFIDENCE...NOT QUITE HIGH ENOUGH YET TO ISSUE AN ADVISORY FOR CERTAINTY OF TIDAL INUNDATION FLOODING. IT IS POSSIBLE AN ADVISORY MAY NEED TO BE ISSUED AS EARLY AS 8 AM FOR THIS NEXT HIGH TIDE CYCLE. $$ NJZ017>019-PAZ070-071-201300- /O.CON.KPHI.CF.S.0047.000000T0000Z-111020T1300Z/ GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA- 609 AM EDT THU OCT 20 2011 * LOCATION...FROM FAR NORTHERN DELAWARE AND SOUTHWEST NEW JERSEY INTO THE PHILADELPHIA AREA. * COASTAL FLOODING...THERE IS A SMALL CHANCE THAT THE HIGHEST TIDE MAY BE DELAYED AN HOUR THIS MORNING AS WINDS TURN SOUTH AND BECOME GUSTY TO 25 TO 30 MPH. THIS MIGHT FORCE TIDES TO APPROACH THE MINOR FLOOD THRESHOLD...NEAR PHILADELPHIA AROUND 8 AM OR 9 AM. * IMPACTS...WIDESPREAD MINOR TIDAL FLOODING IS NOT EXPECTED AT THIS TIME. $$
944 WHUS41 KPHI 201225 CFWPHI COASTAL HAZARD MESSAGE NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 825 AM EDT THU OCT 20 2011 MDZ015-019-020-201600- /O.CAN.KPHI.CF.S.0047.111020T1300Z-111020T1800Z/ /O.NEW.KPHI.CF.Y.0061.111020T1225Z-111020T1600Z/ QUEEN ANNES-TALBOT-CAROLINE- 825 AM EDT THU OCT 20 2011 ...COASTAL FLOOD ADVISORY IN EFFECT UNTIL NOON EDT TODAY... THE NATIONAL WEATHER SERVICE HAS ISSUED A COASTAL FLOOD ADVISORY. IT IS IN EFFECT UNTIL NOON. * LOCATION...THE MARYLAND COUNTIES OF TALBOT, CAROLINE AND QUEEN ANNE'S. * COASTAL FLOODING...MINOR FLOODING IS ANTICIPATED AROUND THE TIME OF THIS MORNING'S HIGH TIDE. * TIMING...THE PERIOD OF CONCERN IS UNTIL NOON. * IMPACTS...LOCALIZED ROADWAY FLOODING IS POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD ADVISORY INDICATES THAT MINOR TIDAL FLOODING IS ANTICIPATED. MINOR TIDAL FLOODING OFTEN RESULTS IN SOME ROAD CLOSURES. USUALLY, THE MOST VULNERABLE ROADWAYS WILL FLOOD. DO NOT LEAVE YOUR VEHICLE AT A LOCATION THAT IS PRONE TO TIDAL FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN YOU THINK IT IS. YOU WILL BE PUTTING YOURSELF IN DANGER AND YOUR VEHICLE MAY BE DAMAGED, LEADING TO COSTLY REPAIRS. FOR A LIST OF THE IMPACT OF DIFFERENT TIDE HEIGHTS IN YOUR COUNTY PLEASE GO TO WWW.WEATHER.GOV/PHI/TIDES.HTM (ALL IN LOWER CASE). && $$ MDZ008-012-202030- /O.CAN.KPHI.CF.S.0047.111020T1300Z-111020T1800Z/ /O.NEW.KPHI.CF.Y.0061.111020T1500Z-111020T2100Z/ CECIL-KENT MD- 825 AM EDT THU OCT 20 2011 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 11 AM UNTIL 5 PM EDT THIS AFTERNOON... THE NATIONAL WEATHER SERVICE HAS ISSUED A COASTAL FLOOD ADVISORY. IT IS IN EFFECT FROM 1100 AM UNTIL 500 PM. * LOCATION...THE MARYLAND COUNTIES OF KENT AND CECIL. * COASTAL FLOODING...MINOR FLOODING IS ANTICIPATED AROUND THE TIME OF THE HIGH TIDE FROM LATE THIS MORNING INTO THIS AFTERNOON. * TIMING...THE PERIOD OF CONCERN IS FROM 1100 AM UNTIL 500 PM. * IMPACTS...LOCALIZED ROADWAY FLOODING IS POSSIBLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... A COASTAL FLOOD ADVISORY INDICATES THAT MINOR TIDAL FLOODING IS ANTICIPATED. MINOR TIDAL FLOODING OFTEN RESULTS IN SOME ROAD CLOSURES. USUALLY, THE MOST VULNERABLE ROADWAYS WILL FLOOD. DO NOT LEAVE YOUR VEHICLE AT A LOCATION THAT IS PRONE TO TIDAL FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOOD WATERS. THE WATER MAY BE DEEPER THAN YOU THINK IT IS. YOU WILL BE PUTTING YOURSELF IN DANGER AND YOUR VEHICLE MAY BE DAMAGED, LEADING TO COSTLY REPAIRS. FOR A LIST OF THE IMPACT OF DIFFERENT TIDE HEIGHTS IN YOUR COUNTY PLEASE GO TO WWW.WEATHER.GOV/PHI/TIDES.HTM (ALL IN LOWER CASE). && $$ NJZ017>019-PAZ070-071-201330- /O.CAN.KPHI.CF.S.0047.000000T0000Z-111020T1300Z/ GLOUCESTER-CAMDEN-NORTHWESTERN BURLINGTON-DELAWARE-PHILADELPHIA- 825 AM EDT THU OCT 20 2011 ...MINOR TIDAL FLOODING POTENTIAL EASES... THE POTENTIAL FOR ADDITIONAL MINOR TIDAL FLOODING ALONG THE LOWER DELAWARE RIVER HAS DIMINISHED. SPOTTY MINOR TIDAL FLOODING IS NO LONGER ANTICIPATED. $$ IOVINO
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 20, 2:11 AM EDT | Coastal Flood Advisory | PHI | Cecil, Kent, Queen Anne's | 3 hr |
| Oct 20, 8:25 AM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 9 hr |
| Oct 20, 5:09 PM EDT | Coastal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 3 hr |
| Oct 19, 11:30 PM EDT | Special Weather Statement | PHI | Sussex | 90 min |
| Oct 20, 12:09 AM EDT | Special Weather Statement | PHI | Kent, Sussex | 66 min |
| Oct 19, 9:56 PM EDT | Special Weather Statement | PHI | Warren | 49 min |
| Oct 19, 10:26 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth, Morris, Somerset | 64 min |
| Oct 19, 11:48 PM EDT | Special Weather Statement | PHI | Sussex | 12 min |
| Oct 20, 2:41 AM EDT | Gale Warning | PHI | 13 hr |
Nearby
Coastal Flood Statements in Maryland, 2011Coastal Flood Statements in New Jersey, 2011Coastal Flood Statements in Pennsylvania, 2011Every coastal flood statement in 2011
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.