Alert archive / Maryland / Flash Flood Warnings in 2009
Flash Flood Warning 50, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 22, 2009, 3:53 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 6 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
- Aug 22, 2009, 3:53 PM EDT (19:53 UTC)
- Expired
- Aug 22, 2009, 10:15 PM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 61 km from the middle of the area, began a volume at 19:55 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 |
|---|---|---|---|
| Aug 22, 5:45 PM EDT | FLASH FLOOD | Easton, MD | MANY ROADWAYS FLOOD THROUGHOUT COUNTY |
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 12:00Z, 7.9 hours before the alert went out and 111 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
- 621 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 539 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- -26 m²/s²
- 0-3 km storm-relative helicity
- 5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WGUS51 KPHI 221953
FFWPHI
MDC011-041-222345-
/O.NEW.KPHI.FF.W.0050.090822T1953Z-090822T2345Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
353 PM EDT SAT AUG 22 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN CAROLINE COUNTY IN EASTERN MARYLAND...
TALBOT COUNTY IN EASTERN MARYLAND...
THIS INCLUDES THE CITY OF EASTON...
* UNTIL 745 PM EDT
* AT 347 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A THUNDERSTORM OVER THE WARNED AREA.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TALBOT...
SKIPTON...MATTHEWS...GRIFFIN...CORDOVA AND COPPERVILLE
THIS FLASH FLOOD WARNING IS SOUTH OF THE TOWN OF RIDGELY BUT WE ARE
MONITORING THE AREA IN THE EVENT MORE HEAVY SHOWERS MOVE CLOSE TO
RIDGELY WHERE OVER NINE INCHES FELL EARLIER THIS MORNING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3859 7607 3866 7617 3866 7621 3873 7625
3872 7631 3868 7635 3881 7632 3886 7626
3887 7625 3884 7625 3883 7621 3888 7615
3887 7611 3893 7611 3891 7601 3893 7584
3869 7586 3867 7595 3858 7600
$$
EBERWINE1 follow-up statement
000
WGUS51 KPHI 222329
FFWPHI
MDC011-041-230215-
/O.EXT.KPHI.FF.W.0050.000000T0000Z-090823T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
729 PM EDT SAT AUG 22 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
SOUTHWESTERN CAROLINE COUNTY IN EASTERN MARYLAND...
TALBOT COUNTY IN EASTERN MARYLAND...
THIS INCLUDES THE CITY OF EASTON...
* UNTIL 1015 PM EDT
* AT 725 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
FLASH FLOODING FROM A LARGE AREA OF HEAVY SHOWERS AND THUNDERSTORMS.
AN ADDITIONAL THREE INCHES ARE POSSIBLE BEFORE MIDNIGHT.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO TALBOT...
SKIPTON...MATTHEWS...HARMONY...GRIFFIN...CORDOVA...COPPERVILLE AND
ST. MICHAELS
PRECAUTIONARY/PREPAREDNESS ACTIONS...
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH 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.
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY.
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. DO NOT ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR BY
AUTOMOBILE.
&&
LAT...LON 3859 7607 3866 7617 3866 7621 3873 7625
3872 7631 3868 7635 3881 7632 3886 7626
3887 7625 3884 7625 3883 7621 3888 7615
3887 7611 3893 7611 3891 7601 3893 7584
3869 7586 3867 7595 3858 7600
$$
EBERWINEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 21, 10:14 PM EDT | Areal Flood Advisory | PHI | Cecil, Kent | 3 hr |
| Aug 21, 11:49 PM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 116 min |
| Aug 22, 12:45 AM EDT | Areal Flood Warning | PHI | Caroline | 17 hr |
| Aug 22, 1:28 AM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's | 4 hr |
| Aug 22, 2:19 AM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's, Talbot | 6 hr |
| Aug 22, 4:26 AM EDT | Areal Flood Advisory | PHI | Caroline | 6 hr |
| Aug 22, 5:42 AM EDT | Areal Flood Advisory | PHI | Caroline, Queen Anne's | 3 hr |
| Aug 22, 8:12 AM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 3 hr |
| Aug 22, 4:46 PM EDT | Flash Flood Warning | PHI | Caroline | 5 hr |
| Aug 22, 5:40 PM EDT | Areal Flood Warning | PHI | Caroline | 14 hr |
| Aug 22, 6:02 PM EDT | Flash Flood Warning | PHI | Cecil, Kent, Queen Anne's | 4 hr |
Nearby
Flash Flood Warnings in Maryland, 2009Every flash flood warning in 2009
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.