Alert archive / Maryland / Flash Flood Warnings in 2000

Flash Flood Warning 17, NWS Philadelphia/Mount Holly

July 14, 2000Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 14, 2000, 11:45 PM EDT for Kent County, Queen Anne's County, Maryland. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jul 14, 2000, 11:45 PM EDT (03:45 UTC)
Expired: Jul 15, 2000, 2:45 AM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Whole counties

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

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 00:00Z, 3.8 hours before the alert went out and 115 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: 1500 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1168 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: 70 m²/s²
0-3 km storm-relative helicity: 109 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.5

Open this sounding in Storm Lab

The text

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

000 
WGUS51 KPHI 150349
FFWPHI
MDC029-035-150645-

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1145 PM EDT FRI JUL 14 2000

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  QUEEN ANNE'S COUNTY IN NORTHEAST MARYLAND
  KENT COUNTY IN NORTHEAST MARYLAND

* UNTIL 245 AM EDT.

* AT 1145 PM EDT...WEATHER SERVICE RADAR INDICATED A THUNDERSTORM
  WITH HEAVY RAIN AND FREQUENT LIGHTNING OVER CHESAPEAKE BAY.  THE
  STORM WAS MOVING NORTHEAST AROUND 10 MPH.  THE RAIN WILL OCCUR IN
  AREAS THAT HAVE ALREADY RECEIVED TWO TO THREE INCHES OF RAIN THIS
  EVENING.

* SOME LOCATIONS THAT WILL BE AFFECTED INCLUDE...
  ROCK HALL...
  GRASONVILLE...
  CHURCH HILL...
  CHESTERTOWN...
  CENTREVILLE...

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODS AND FLASH FLOODS.  IF FLASH FLOODING IS OBSERVED
ACT QUICKLY.  MOVE UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS.  DO
NOT STAY IN AREAS SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

INTENSE LIGHTNING IS ALSO OCCURRING WITH THIS STORM.  MOVE INDOORS IF
POSSIBLE.  WHEN INDOORS...STAY AWAY FROM WINDOWS AND DOORS ]AND AVOID
USING TELEPHONES UNLESS IT IS AN EMERGENCY.  IF OUTDOORS...STAY AWAY
FROM ISOLATED HIGH OBJECTS SUCH AS TREES.
$$

IOVINO/NATIONAL WEATHER SERVICE

LAT...LON 3939 7578 3898 7598 3888 7634 3936 7609

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 14, 8:26 PM EDT	Severe Thunderstorm Warning	PHI	Kent	34 min
Jul 15, 12:20 AM EDT	Flash Flood Warning	PHI	Caroline, Talbot	2 hr
Jul 15, 12:45 AM EDT	Severe Thunderstorm Warning	PHI	Talbot	30 min
Jul 15, 1:10 AM EDT	Severe Thunderstorm Warning	PHI	Caroline	35 min
Jul 15, 5:34 PM EDT	Severe Thunderstorm Warning	PHI	Caroline, Talbot	26 min

Nearby

Flash Flood Warnings in Maryland, 2000 Every flash flood warning in 2000

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.