Alert archive / Maryland / Areal Flood Warnings in 2021
Areal Flood Warning 52, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this areal flood warning at Oct 25, 2021, 11:51 PM EDT for 4 counties in Maryland. It was in force for 6 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
- Oct 25, 2021, 11:51 PM EDT (03:51 UTC)
- Expired
- Oct 26, 2021, 5:31 AM EDT
- In force
- 6 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- None
Counties Caroline County, MD, Kent County, MD, Queen Anne's County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 66 km from the middle of the area, began a volume at 03:50 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 00:00Z, 3.9 hours before the alert went out and 105 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
- 14 J/kg
- Mixed-layer CIN
- -15 J/kg
- Mixed-layer LCL
- 660 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- -130 m²/s²
- 0-3 km storm-relative helicity
- 70 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
670
WGUS41 KPHI 260351
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1151 PM EDT Mon Oct 25 2021
MDC011-029-035-041-260945-
/O.NEW.KPHI.FA.W.0052.211026T0351Z-211026T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caroline MD-Kent MD-Queen Anne's MD-Talbot MD-
1151 PM EDT Mon Oct 25 2021
The National Weather Service in Mount Holly has issued a
* Flood Warning for...
Caroline County in eastern Maryland...
Talbot County in eastern Maryland...
Kent County in northeastern Maryland...
Queen Anne's County in northeastern Maryland...
* Until 545 AM EDT.
* At 1151 PM EDT, Doppler radar indicated heavy rain. Flooding is
ongoing or expected to begin shortly in the warned area. Heavy
rains are expected to continue until well after midnight. Two to
three inches of rain could fall into the early morning hours of
Tuesday.
* Some locations that may experience flooding include...
Easton, Centerville, Talbot, Chestertown, Denton, Centreville,
Romancoke, Federalsburg, Greensboro, Oakland, Ridgely, and Trappe.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles. It is often difficult to recognize
flooded roads at night.
&&
LAT...LON 3877 7638 3878 7637 3875 7637 3886 7625
3879 7619 3896 7625 3884 7638 3904 7630
3898 7624 3932 7619 3938 7578 3866 7573
3870 7590 3857 7603 3878 7627 3867 7634
$$
PO1 follow-up statement
602
WGUS81 KPHI 260931
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
531 AM EDT Tue Oct 26 2021
MDC011-029-035-041-260941-
/O.CAN.KPHI.FA.W.0052.000000T0000Z-211026T0945Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Caroline MD-Kent MD-Queen Anne's MD-Talbot MD-
531 AM EDT Tue Oct 26 2021
...FLOOD WARNING IS CANCELLED FOR CAROLINE, TALBOT, KENT, AND QUEEN
ANNE'S COUNTIES...
The heavy rain has ended. Flooding is no longer expected to pose a
threat. Please continue to heed remaining road closures.
LAT...LON 3877 7638 3878 7637 3875 7637 3886 7625
3879 7619 3896 7625 3884 7638 3904 7630
3898 7624 3932 7619 3938 7578 3866 7573
3870 7590 3857 7603 3878 7627 3867 7634
$$
PONearby
Areal Flood Warnings in Maryland, 2021Every areal flood warning in 2021
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.