Alert archive / Maryland / Flash Flood Warnings in 2014

Flash Flood Warning 1, NWS Philadelphia/Mount Holly

May 16, 2014Queen Anne's County, Talbot County, Maryland

NWS Philadelphia/Mount Holly issued this flash flood warning at May 16, 2014, 10:15 AM EDT for Queen Anne's County, Talbot 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: May 16, 2014, 10:15 AM EDT (14:15 UTC)
Expired: May 16, 2014, 2:15 PM EDT
In force: 4 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Queen Anne's County, MD, Talbot County, MD

The radar

The Dover AFB radar (KDOX), 70 km from the middle of the area, began a volume at 14:19 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 12:00Z, 2.3 hours before the alert went out and 100 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 800 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: -164 m²/s²
0-3 km storm-relative helicity: 66 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

408 
WGUS51 KPHI 161415
FFWPHI
MDC035-041-161815-
/O.NEW.KPHI.FF.W.0001.140516T1415Z-140516T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1015 AM EDT FRI MAY 16 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN QUEEN ANNE'S COUNTY...
  TALBOT COUNTY...

* UNTIL 215 PM EDT...

* AT 1005 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  HEAVY RAIN OVER SOUTHERN QUEEN ANNE'S AND TALBOT COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CENTERVILLE.

NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED THAT UP TO THREE 
INCHES OF RAIN HAVE FALLEN OVER THE LAST THREE HOURS.

EXCESSIVE RUNOFF FROM THIS RAINFALL WILL QUICKLY CAUSE FLOODING OF 
HIGHWAYS, AND OTHER POOR DRAINAGE AREAS AND LOW LYING SPOTS. THE 
RUNOFF WILL CAUSE QUICK RISES ON SMALL CREEKS AND STREAMS.

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. NEVER ATTEMPT TO CROSS SWIFTLY FLOWING WATERS OR WATERS 
OF UNKNOWN DEPTH BY FOOT OR IN AN AUTOMOBILE. TURN AROUND DON'T 
DROWN!

DRIVING INTO FLOOD WATERS COULD COST YOU YOUR LIFE...OR AT THE VERY
LEAST...THOUSANDS OF DOLLARS OF VEHICLE DAMAGE. NEARLY HALF OF ALL 
FLASH FLOOD FATALITIES ARE AUTO RELATED. 

&&

LAT...LON 3876 7636 3887 7625 3881 7621 3882 7620
      3894 7624 3890 7624 3893 7628 3890 7628
      3891 7632 3883 7637 3885 7639 3904 7632
      3898 7621 3910 7616 3909 7590 3859 7605
      3860 7612 3873 7626 3867 7635 3876 7639

$$

KRUZDLO

1 follow-up statement

318 
WGUS71 KPHI 161749
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
149 PM EDT FRI MAY 16 2014

MDC035-041-161758-
/O.CAN.KPHI.FF.W.0001.000000T0000Z-140516T1815Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
QUEEN ANNE'S MD-TALBOT MD-
149 PM EDT FRI MAY 16 2014

...THE FLASH FLOOD WARNING HAS BEEN CANCELLED FOR TALBOT AND SOUTHERN
QUEEN ANNE'S COUNTIES...

ONLY A FEW SHOWERS REMAIN ACROSS THE WARNED AREA. EXCESSIVE RUNOFF 
IS NO LONGER EXPECTED.

LAT...LON 3876 7636 3887 7625 3881 7621 3882 7620
      3894 7624 3890 7624 3893 7628 3890 7628
      3891 7632 3883 7637 3885 7639 3904 7632
      3898 7621 3910 7616 3909 7590 3859 7605
      3860 7612 3873 7626 3867 7635 3876 7639

$$

KRUZDLO

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
May 16, 8:03 AM EDT	Coastal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	10 hr
May 16, 9:41 AM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	6 hr
May 16, 10:01 AM EDT	Areal Flood Advisory	PHI	Caroline, Cecil, Kent, Queen Anne's	7 hr

Nearby

Flash Flood Warnings in Maryland, 2014 Every flash flood warning in 2014

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.