Alert archive / Maine / Flash Flood Warnings in 2021

Flash Flood Warning 2, NWS Caribou, ME

June 9, 2021Hancock County, Maine

NWS Caribou, ME issued this flash flood warning at Jun 9, 2021, 5:47 AM EDT for Hancock County, Maine. It was in force for 2 hr. 3 reports 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: Jun 9, 2021, 5:47 AM EDT (09:47 UTC)
Expired: Jun 9, 2021, 8:12 AM EDT
In force: 2 hr
Issued by: NWS Caribou, ME
Area: Storm-based polygon
Flood severity: None

County Hancock County, ME

The radar

The Caribou radar (KCBW), 183 km from the middle of the area, began a volume at 09:49 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.

What was reported inside it

Time	Report	Where	Remark
Jun 9, 7:30 AM EDT	FLASH FLOOD	Winter Harbor, ME	MAIN ST AT DUCK POND RD FLOODED WITH WATER UP TO BUSINESS.
Jun 9, 8:00 AM EDT	FLASH FLOOD	Winter Harbor, ME	MAIN ST FLOODED BETWEEN MEADOW LN AND NEWMAN ST WHERE THE CREEK NEAR THE POST OFFICE HAS COME OUT OF ITS BANKS. VIA SOCIAL MEDIA VIDEO.
Jun 9, 8:08 AM EDT	FLASH FLOOD	2 Ssw Prospect Harbor, ME	ROUTE 186 NEAR MCS MARKET AND EAST SCHOODIC DRIVE ARE CLOSED DUE TO ROAD WASHOUT.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Gray, ME (KGYX), launched 00:00Z, 9.8 hours before the alert went out and 184 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: 1223 J/kg
Mixed-layer CIN: -15 J/kg
Mixed-layer LCL: 1430 m above ground
0-6 km bulk shear: 22 kt
0-1 km storm-relative helicity: 42 m²/s²
0-3 km storm-relative helicity: 80 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.8

Open this sounding in Storm Lab

The text

As transmitted.

793 
WGUS51 KCAR 090947
FFWCAR
MEC009-091300-
/O.NEW.KCAR.FF.W.0002.210609T0947Z-210609T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Caribou ME
547 AM EDT Wed Jun 9 2021

The National Weather Service in Caribou has issued a

* Flash Flood Warning for...
  Southeastern Hancock County in southeastern Maine...

* Until 900 AM EDT.

* At 547 AM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 inches of 
  rain have fallen. The expected rainfall rate is 1 to 1.5 inches in 
  1 hour. Flash flooding is ongoing or expected to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Winter Harbor.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

&&

LAT...LON 4448 6815 4446 6811 4445 6801 4443 6801
      4442 6799 4441 6801 4441 6803 4439 6802
      4435 6803 4434 6804 4433 6806 4433 6807
      4435 6807 4439 6808 4438 6809 4437 6809
      4438 6812 4444 6815

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-1.5 INCHES IN 1 HOUR

$$

Maloit

1 follow-up statement

708 
WGUS71 KCAR 091212
FFSCAR

Flash Flood Statement
National Weather Service Caribou ME
812 AM EDT Wed Jun 9 2021

MEC009-091222-
/O.CAN.KCAR.FF.W.0002.000000T0000Z-210609T1300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Hancock ME-
812 AM EDT Wed Jun 9 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN HANCOCK 
COUNTY...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 4448 6815 4446 6811 4445 6801 4443 6801
      4442 6799 4441 6801 4441 6803 4439 6802
      4435 6803 4434 6804 4433 6806 4433 6807
      4435 6807 4439 6808 4438 6809 4437 6809
      4438 6812 4444 6815

$$

Farrar

The office that day

Everything else NWS Caribou, ME issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 9:09 PM EDT	Special Weather Statement	CAR	Aroostook	36 min
Jun 9, 4:40 AM EDT	Areal Flood Advisory	CAR	Washington	2 hr
Jun 9, 4:48 AM EDT	Flash Flood Warning	CAR	Washington	2 hr
Jun 9, 4:59 AM EDT	Areal Flood Advisory	CAR	Hancock	3 hr

Nearby

Flash Flood Warnings in Maine, 2021 Every flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.