Alert archive / Maryland / Flash Flood Warnings in 2012
Flash Flood Warning 40, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 26, 2012, 1:29 PM EDT for Caroline County, Queen Anne's County, Talbot County, Maryland. It was in force for 7 hr. 3 reports 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 26, 2012, 1:29 PM EDT (17:29 UTC)
- Expired
- Aug 26, 2012, 8:30 PM EDT
- In force
- 7 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Caroline County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 17:32 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 26, 2:48 PM EDT | FLASH FLOOD | Easton, MD | VEHICLES STALLED AND FLOODING ALONG ROUTE 50 ACROSS COUNTY |
| Aug 26, 4:30 PM EDT | FLASH FLOOD | Saint Michaels, MD | VEHICLES ABANDONED AND PEOPLE RESCUED FROM VEHICLES DUE TO FLOODING. |
| Aug 26, 5:30 PM EDT | FLASH FLOOD | Cordova, MD | VEHICLES ABANDONED AND PEOPLE RESCUED FROM VEHICLES DUE TO FLOODING. |
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, 5.5 hours before the alert went out and 105 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
- 926 J/kg
- Mixed-layer CIN
- -13 J/kg
- Mixed-layer LCL
- 504 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- 111 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.6
The text
As transmitted, in the capitals the NWS used until 2016.
514
WGUS51 KPHI 261729
FFWPHI
MDC011-035-041-262130-
/O.NEW.KPHI.FF.W.0040.120826T1729Z-120826T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
129 PM EDT SUN AUG 26 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
TALBOT COUNTY...
SOUTHWESTERN CAROLINE COUNTY...
SOUTHWESTERN QUEEN ANNE'S COUNTY...
* UNTIL 530 PM EDT...
* AT 125 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM THUNDERSTORMS OVER SOUTHWESTERN CAROLINE...
SOUTHWESTERN QUEEN ANNE'S AND TALBOT COUNTIES. RADAR INDICATED THAT
FROM TWO TO THREE INCHES OF RAIN HAD ALREADY FALLEN IN AREAS AROUND
CHOPTANK...TANYARD...EASTON AND CORDOVA.
* LOCATIONS IN THE WARNING INCLUDE SOUTHWESTERN
CAROLINE...SOUTHWESTERN QUEEN ANNE'S AND TALBOT COUNTIES.
ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES ARE POSSIBLE IN
THE WARNED AREA.
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. NEVER ATTEMPT TO CROSS
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN
AUTOMOBILE. TURN AROUND DON'T DROWN!
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1-877-633-6772.
&&
LAT...LON 3860 7613 3872 7626 3866 7634 3876 7639
3875 7635 3887 7625 3881 7621 3882 7620
3894 7624 3890 7625 3892 7628 3883 7637
3884 7638 3903 7633 3898 7620 3902 7619
3904 7594 3870 7589 3860 7598 3857 7603
$$
IOVINO3 follow-up statements
897
WGUS71 KPHI 261848
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
248 PM EDT SUN AUG 26 2012
MDC011-035-041-262130-
/O.CON.KPHI.FF.W.0040.000000T0000Z-120826T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TALBOT MD-CAROLINE MD-QUEEN ANNE'S MD-
248 PM EDT SUN AUG 26 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR
SOUTHWESTERN QUEEN ANNE'S...SOUTHWESTERN CAROLINE AND TALBOT
COUNTIES...
AT 245 PM EDT...DOPPLER RADAR ESTIMATES CONTINUE TO INDICATE
THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER SOUTHWESTERN
CAROLINE...SOUTHWESTERN QUEEN ANNE'S AND TALBOT COUNTIES. RADAR
INDICATED THAT UP TO FOUR TO SIX INCHES OF RAIN HAD FALLEN IN THE
AREA BETWEEN EASTON AND WYE MILLS.
MORE HEAVY RAIN WILL FALL IN THE WARNED AREA THIS AFTERNOON.
ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES ARE POSSIBLE.
THIS IS A VERY DANGEROUS SITUATION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE BY CALLING YOUR LOCAL
LAW ENFORCEMENT OFFICIALS OR BY CALLING THE NATIONAL WEATHER SERVICE
TOLL FREE AT...1-877-633-6772.
&&
LAT...LON 3860 7613 3872 7626 3866 7634 3876 7639
3875 7635 3887 7625 3881 7621 3882 7620
3894 7624 3890 7625 3892 7628 3883 7637
3884 7638 3903 7633 3898 7620 3902 7619
3904 7594 3870 7589 3860 7598 3857 7603
$$
IOVINO801
WGUS71 KPHI 262003
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
403 PM EDT SUN AUG 26 2012
MDC011-262005-
/O.CAN.KPHI.FF.W.0040.000000T0000Z-120826T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAROLINE MD-
403 PM EDT SUN AUG 26 2012
...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR SOUTHWESTERN
CAROLINE COUNTY...
THE HEAVY RAIN DURING THE NEXT SEVERAL HOURS SHOULD REMAIN MOSTLY TO
THE WEST OF CAROLINE COUNTY. AS A RESULT...THE FLASH FLOOD WARNING
FOR THE SOUTHWESTERN PART OF THE COUNTY HAS BEEN CANCELLED.
THE WATERS FROM THE EARLIER HEAVY RAINS ARE RECEDING AND FLOOD
WATERS NO LONGER POSE A THREAT TO LIFE OR PROPERTY IN CAROLINE
COUNTY.
LAT...LON 3872 7626 3872 7631 3871 7632 3866 7634
3876 7639 3875 7635 3887 7625 3881 7621
3882 7620 3894 7624 3883 7637 3884 7638
3903 7633 3898 7620 3902 7618 3904 7594
3881 7591 3873 7602 3867 7594 3857 7603
$$
MDC035-041-262130-
/O.CON.KPHI.FF.W.0040.000000T0000Z-120826T2130Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
TALBOT MD-QUEEN ANNE'S MD-
403 PM EDT SUN AUG 26 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR
SOUTHWESTERN QUEEN ANNE'S AND TALBOT COUNTIES...
AT 355 PM EDT...DOPPLER RADAR ESTIMATES CONTINUED TO INDICATE
THUNDERSTORMS PRODUCING VERY HEAVY RAIN OVER SOUTHWESTERN QUEEN
ANNE'S AND TALBOT COUNTIES. RADAR INDICATED THAT MUCH OF THE AREA
HAD RECEIVED FROM TWO TO FOUR INCHES OF RAIN. BASED ON
RADAR...LOCATIONS FROM AROUND WYE MILLS TO NEAR EASTON ALONG ROUTE
50 HAD RECEIVED FOUR TO SIX INCHES OF RAIN.
ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES ARE POSSIBLE IN
THE WARNED AREA INTO THIS EVENING. THOSE AMOUNT COULD RESULT IN
EXTREME FLASH FLOODING IN SPOTS. THIS IS A VERY DANGEROUS SITUATION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DO NOT TRY TO CROSS FLOOD WATERS. MOVE TO HIGHER GROUND IF FLOOD
WATERS THREATEN.
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE BY CALLING YOUR LOCAL
LAW ENFORCEMENT OFFICIALS OR BY CALLING THE NATIONAL WEATHER SERVICE
TOLL FREE AT...1-877-633-6772.
&&
LAT...LON 3872 7626 3872 7631 3871 7632 3866 7634
3876 7639 3875 7635 3887 7625 3881 7621
3882 7620 3894 7624 3883 7637 3884 7638
3903 7633 3898 7620 3902 7618 3904 7594
3881 7591 3873 7602 3867 7594 3857 7603
$$
IOVINO563
WGUS51 KPHI 262033
FFWPHI
MDC035-041-270030-
/O.EXT.KPHI.FF.W.0040.000000T0000Z-120827T0030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
433 PM EDT SUN AUG 26 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE
* FLASH FLOOD WARNING FOR...
TALBOT COUNTY...
SOUTHWESTERN QUEEN ANNE'S COUNTY...
* UNTIL 830 PM EDT...
* AT 430 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED
TO INDICATE VERY HEAVY RAIN FROM THUNDERSTORMS OVER SOUTHWESTERN
QUEEN ANNE'S AND TALBOT COUNTIES. FROM TWO TO FOUR INCHES HAD
ALREADY FALLEN IN MUCH OF THE AREA. AMOUNTS FROM FOUR TO SIX INCHES
WERE INDICATED AROUND EASTON AND WYE MILLS WITH A FEW ACTUAL
OBSERVATIONS CONFIRMING THE RADAR ESTIMATES. FLASH FLOODING HAD
ALREADY OCCURRED ALONG ROUTE 50...AND THAT AREA REMAINS SUSCEPTIBLE
TO ADDITIONAL HEAVY RAINFALL.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO EASTON...
GRASONVILLE...OXFORD...ST. MICHAELS...CORDOVA...KENT POINT...
MATTHEWS...TILGHMAN ISLAND AND WYE MILLS.
ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES ARE POSSIBLE IN
PARTS OF THE WARNED AREA. THIS COULD RESULT IN EXTREME FLASH
FLOODING IN SPOTS. THIS IS A VERY DANGEROUS SITUATION.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE TO THE NATIONAL WEATHER
SERVICE BY CALLING TOLL FREE...1-877-633-6772.
DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.
IF FLOOD WATERS THREATEN...MOVE TO HIGHER GROUND IMMEDIATELY.
&&
LAT...LON 3872 7626 3872 7631 3871 7632 3866 7634
3876 7639 3875 7635 3887 7625 3881 7621
3882 7620 3894 7624 3883 7637 3884 7638
3903 7633 3898 7620 3902 7618 3904 7594
3881 7591 3873 7602 3867 7594 3857 7603
$$
IOVINOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 26, 7:43 AM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 2 hr |
| Aug 26, 11:48 AM EDT | Special Weather Statement | PHI | Caroline, Queen Anne's, Talbot | 117 min |
| Aug 26, 12:17 PM EDT | Areal Flood Advisory | PHI | Caroline, Talbot | 118 min |
| Aug 26, 12:49 PM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's | 91 min |
| Aug 26, 2:22 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 53 min |
| Aug 26, 2:58 PM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's | 4 hr |
| Aug 26, 3:15 PM EDT | Severe Thunderstorm Warning | PHI | Talbot | 25 min |
| Aug 26, 5:36 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 39 min |
| Aug 26, 5:42 PM EDT | Tornado Warning | PHI | Caroline | 19 min |
| Aug 26, 6:15 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's | 4 hr |
| Aug 26, 7:39 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Talbot | 66 min |
| Aug 26, 7:59 PM EDT | Areal Flood Warning | PHI | Queen Anne's, Talbot | 15 hr |
Nearby
Flash Flood Warnings in Maryland, 2012Every flash 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.