Alert archive / Maryland / Flash Flood Warnings in 2012
Flash Flood Warning 4, NWS Pittsburgh, PA
NWS Pittsburgh, PA issued this flash flood warning at May 27, 2012, 3:21 PM EDT for Garrett County, Maryland. It was in force for 3 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
- May 27, 2012, 3:21 PM EDT (19:21 UTC)
- Expired
- May 27, 2012, 6:15 PM EDT
- In force
- 3 hr
- Issued by
- NWS Pittsburgh, PA
- Area
- Storm-based polygon
- Flood severity
- None
County Garrett County, MD
The radar
The Pittsburgh radar (KPBZ), 152 km from the middle of the area, began a volume at 19:24 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 |
|---|---|---|---|
| May 27, 3:45 PM EDT | FLASH FLOOD | 4 Ne Swanton, MD | SPRING LICK ROAD WASHED OUT BY FLOOD WATERS. WATER STILL FLOODING ROAD. TREES WASHED OUT BLOCKING ROAD. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Pittsburgh, PA (KPIT), launched 12:00Z, 7.4 hours before the alert went out and 135 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
- 993 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1085 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 47 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
017
WGUS51 KPBZ 271921
FFWPBZ
MDC023-272215-
/O.NEW.KPBZ.FF.W.0004.120527T1921Z-120527T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE PITTSBURGH PA
321 PM EDT SUN MAY 27 2012
THE NATIONAL WEATHER SERVICE IN PITTSBURGH HAS ISSUED A
* FLASH FLOOD WARNING FOR...
CENTRAL GARRETT COUNTY IN WESTERN MARYLAND...
* UNTIL 615 PM EDT
* AT 315 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
TORRENTIAL DOWNPOURS FROM A THUNDERSTORM JUST SOUTHWEST OF BIG RUN
STATE PARK. DOPPLER RADAR ESTIMATES THAT 3 INCHES OF RAIN OR MORE
MAY HAVE FALLEN IN THE CRABTREE CREEK AND MAPLE LICK RUN AREAS.
THE THUNDERSTORM IS NEARLY STATIONARY AND THE HEAVY RAIN WILL
CONTINUE. SPRING LICK CREEK ROAD MAY BE AFFECTED.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLOODING IS OCCURRING OR IS IMMINENT. KNOW WHERE YOU ARE RELATIVE TO
SMALL STREAMS AND RIVERS...WHICH CAN BECOME KILLERS IN HEAVY RAIN.
PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE...1-877-633-6772.
LAT...LON 3947 7907 3946 7909 3945 7909 3941 7913
3941 7915 3939 7916 3938 7919 3936 7921
3936 7933 3953 7925 3957 7909 3948 7906
$$1 follow-up statement
017
WGUS71 KPBZ 272027
FFSPBZ
FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE PITTSBURGH PA
427 PM EDT SUN MAY 27 2012
MDC023-272215-
/O.CON.KPBZ.FF.W.0004.000000T0000Z-120527T2215Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GARRETT MD-
427 PM EDT SUN MAY 27 2012
...A FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 615 PM EDT FOR
GARRETT COUNTY...
AT 420 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED THAT
THE THUNDERSTORM HAS MOVED OUT OF THE WARNING AREA BETWEEN SWANTON
AND BIG RUN STATE PARK. RUNOFF FROM THE STORM WILL CONTINUE. RADAR
ESTIMATES THAT 4 OR MORE INCHES OF RAIN MAY HAVE FALLEN IN THE
CRABTREE CREEK AND MAPLE LICK RUN AREA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
FLOODING IS OCCURRING OR IS IMMINENT. KNOW WHERE YOU ARE RELATIVE TO
SMALL STREAMS AND RIVERS...WHICH CAN BECOME KILLERS IN HEAVY RAIN.
PLEASE REPORT HIGH WATER TO THE NATIONAL WEATHER SERVICE BY CALLING
TOLL FREE...1-877-633-6772.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 800 PM EDT SUNDAY
EVENING FOR EAST CENTRAL OHIO AND WESTERN PENNSYLVANIA AND NORTHERN
WEST VIRGINIA.
&&
LAT...LON 3947 7907 3946 7909 3945 7909 3941 7913
3941 7915 3939 7916 3938 7919 3936 7921
3936 7933 3953 7925 3957 7909 3948 7906
$$The office that day
Everything else NWS Pittsburgh, PA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 26, 8:06 PM EDT | Special Weather Statement | PBZ | Garrett | 39 min |
| May 27, 2:20 PM EDT | Special Weather Statement | PBZ | Garrett | 40 min |
| May 27, 2:57 PM EDT | Special Weather Statement | PBZ | Garrett | 48 min |
| May 27, 7:08 PM EDT | Special Weather Statement | PBZ | Garrett | 112 min |
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.