Alert archive / Maryland / Flash Flood Warnings in 2012
Flash Flood Warning 42, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 26, 2012, 6:15 PM EDT for Caroline County, Queen Anne's County, Maryland. It was in force for 4 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 26, 2012, 6:15 PM EDT (22:15 UTC)
- Expired
- Aug 26, 2012, 10:15 PM EDT
- In force
- 4 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Caroline County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 40 km from the middle of the area, began a volume at 22:17 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 10.3 hours before the alert went out and 116 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
- 2021 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 627 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 92 m²/s²
- 0-3 km storm-relative helicity
- 151 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 3.5
The text
As transmitted, in the capitals the NWS used until 2016.
939
WGUS51 KPHI 262215
FFWPHI
MDC011-035-270215-
/O.NEW.KPHI.FF.W.0042.120826T2215Z-120827T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
615 PM EDT SUN AUG 26 2012
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLASH FLOOD WARNING FOR...
NORTHERN CAROLINE COUNTY...
EAST CENTRAL QUEEN ANNE'S COUNTY...
* UNTIL 1015 PM EDT...
* AT 615 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
VERY HEAVY RAIN FROM THUNDERSTORMS OVER EAST CENTRAL QUEEN
ANNE'S AND NORTHERN CAROLINE COUNTIES.
* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO DENTON...
GOLDSBORO...GREENSBORO...RIDGELY...OAKLAND...GRIFFIN AND JUMPTOWN.
ADDITIONAL RAINFALL AMOUNTS OF TWO TO FOUR INCHES ARE POSSIBLE IN
THE WARNED AREA THIS EVENING IN A SHORT AMOUNT OF TIME.
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.
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. TURN AROUND...DON'T DROWN! NEVER TRY
TO CROSS A FLOWING STREAM...EVEN A SMALL ONE...ON FOOT. TO ESCAPE
RISING WATER MOVE UP TO HIGHER GROUND.
&&
LAT...LON 3881 7590 3882 7590 3884 7593 3886 7592
3888 7595 3891 7594 3913 7596 3914 7575
3881 7572
$$
IOVINO1 follow-up statement
689
WGUS71 KPHI 262320
FFSPHI
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
720 PM EDT SUN AUG 26 2012
MDC011-035-270215-
/O.CON.KPHI.FF.W.0042.000000T0000Z-120827T0215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAROLINE MD-QUEEN ANNE'S MD-
720 PM EDT SUN AUG 26 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT FOR EAST
CENTRAL QUEEN ANNE'S AND NORTHERN CAROLINE COUNTIES...
AT 715 PM EDT...DOPPLER RADAR CONTINUED TO INDICATE THUNDERSTORMS
PRODUCING VERY HEAVY RAIN OVER PARTS OF EAST CENTRAL QUEEN ANNE'S
AND NORTHERN CAROLINE COUNTIES. BASED ON RADAR ESTIMATES...RAINFALL
AMOUNTS THIS EVENING HAVE RANGED FROM ONE TO TWO AND A HALF INCHES
IN A LARGE PART OF THE WARNING AREA.
ADDITIONAL RAINFALL AMOUNTS OF ONE TO THREE INCHES ARE POSSIBLE IN
THE WARNED AREA THIS EVENING.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.
PLEASE REPORT FLOODING...HAIL OR WIND DAMAGE BY CALLING YOUR LOCAL
LAW ENFORCEMENT OFFICIALS OR BY CALLING THE NATIONAL WEATHER SERVICE
TOLL FREE AT...1-877-633-6772.
&&
LAT...LON 3881 7590 3882 7590 3884 7593 3886 7592
3888 7595 3891 7594 3913 7596 3914 7575
3881 7572
$$
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, 1:29 PM EDT | Flash Flood Warning | PHI | Caroline, Queen Anne's, Talbot | 7 hr |
| 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, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.