Alert archive / Maryland / Flash Flood Warnings in 2006

Flash Flood Warning 26, NWS Philadelphia/Mount Holly

June 26, 2006Caroline County, Queen Anne's County, Maryland; Kent County, Delaware

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 26, 2006, 12:47 PM EDT for Caroline County, Queen Anne's County, Maryland; Kent County, Delaware. It was in force for 118 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 26, 2006, 12:47 PM EDT (16:47 UTC)
Expired: Jun 26, 2006, 2:45 PM EDT
In force: 118 min
Issued by: NWS Philadelphia/Mount Holly
Area: Counties, with a storm outline in the text

Counties Kent County, DE, 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 16:49 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

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.8 hours before the alert went out and 54 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: 185 J/kg
Mixed-layer CIN: -21 J/kg
Mixed-layer LCL: 678 m above ground
0-6 km bulk shear: 26 kt
0-1 km storm-relative helicity: 134 m²/s²
0-3 km storm-relative helicity: 157 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 2.3

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KPHI 261650
FFWPHI
DEC001-MDC011-035-261845-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1247 PM EDT MON JUN 26 2006

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN KENT COUNTY IN CENTRAL DELAWARE
  NORTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND
  NORTHEASTERN QUEEN ANNES COUNTY IN NORTHEAST MARYLAND

* UNTIL 245 PM EDT

* AT 1244 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED  
  HEAVY RAIN MOVING FROM SOUTH TO NORTH OVER EXTREME EASTERN         
  MARYLAND AND EXTREME WESTERN DELAWARE IN THE VICINITY OF KENT      
  COUNTY DE AND CAROLINE AND QUEEN ANNES COUNTIES IN MARYLAND.      
  GIVEN THE VERY WET CONDITIONS FROM RECENT RAIN...RENEWED FLOODING  
  IS LIKELY ESPECIALLY IN LOW LYING AREAS AND IN AREAS OF            
  POOR DRAINAGE.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RIDGELY...
  GREENSBORO...GOLDSBORO...HARTLY AND CLAYTON

LAT...LON 3888 7592 3889 7577 3933 7560 3923 7583

$$

JJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 25, 10:46 PM EDT	Flash Flood Warning	PHI	Cecil	4 hr
Jun 26, 9:10 AM EDT	Flash Flood Warning	PHI	Caroline, Queen Anne's	3 hr
Jun 26, 1:45 PM EDT	Coastal Flood Statement	PHI	Caroline, Cecil, Kent, Queen Anne's, Talbot	24 hr

Nearby

Flash Flood Warnings in Maryland, 2006 Flash Flood Warnings in Delaware, 2006 Every flash flood warning in 2006

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.