Alert archive / Maine / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 21, NWS Caribou, ME

May 30, 2015Aroostook County, Maine

NWS Caribou, ME issued this severe thunderstorm warning at May 30, 2015, 10:17 PM EDT for Aroostook County, Maine. It was in force for 22 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: May 30, 2015, 10:17 PM EDT (02:17 UTC)
Expired: May 30, 2015, 10:39 PM EDT
In force: 22 min
Issued by: NWS Caribou, ME
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

County Aroostook County, ME

The radar

The Caribou radar (KCBW), 32 km from the middle of the area, began a volume at 02:20 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

Caribou, ME (KCAR), launched 00:00Z, 2.3 hours before the alert went out and 73 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: 538 J/kg
Mixed-layer CIN: -40 J/kg
Mixed-layer LCL: 1317 m above ground
0-6 km bulk shear: 39 kt
0-1 km storm-relative helicity: 325 m²/s²
0-3 km storm-relative helicity: 440 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.5

Open this sounding in Storm Lab

The text

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

339 
WUUS51 KCAR 310217
SVRCAR
MEC003-310315-
/O.NEW.KCAR.SV.W.0021.150531T0217Z-150531T0315Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE CARIBOU ME
1017 PM EDT SAT MAY 30 2015

THE NATIONAL WEATHER SERVICE IN CARIBOU MAINE HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL AROOSTOOK COUNTY IN NORTHERN MAINE...

* UNTIL 1115 PM EDT

* AT 1017 PM EDT...A SEVERE THUNDERSTORM WAS LOCATED 7 MILES WEST OF
  DUDLEY TOWNSHIP...OR 19 MILES NORTHEAST OF PATTEN...MOVING EAST AT
  50 MPH.

  HAZARD...60 MPH WIND GUSTS. 

  SOURCE...RADAR INDICATED. 

  IMPACT...EXPECT DAMAGE TO ROOFS...SIDING AND TREES. 

* LOCATIONS IMPACTED INCLUDE...
  HOULTON...HODGDON...BRIDGEWATER...SMYRNA...DUDLEY TOWNSHIP...SMYRNA
  MILLS...LITTLETON...MONTICELLO...OAKFIELD...NEW LIMERICK...
  LUDLOW...MERRILL...SAINT CROIX...MORO PLANTATION...DUDLEY AND
  WEBBERTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

TORRENTIAL RAINFALL IS OCCURRING WITH THIS STORM...AND MAY LEAD TO
FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS.

&&

LAT...LON 4614 6836 4634 6838 4640 6779 4608 6779
TIME...MOT...LOC 0217Z 266DEG 43KT 4624 6825 

HAIL...<.75IN
WIND...60MPH
 
$$

CB

1 follow-up statement

359 
WWUS51 KCAR 310239
SVSCAR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE CARIBOU ME
1039 PM EDT SAT MAY 30 2015

MEC003-310248-
/O.CAN.KCAR.SV.W.0021.000000T0000Z-150531T0315Z/
AROOSTOOK ME-
1039 PM EDT SAT MAY 30 2015

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL AROOSTOOK COUNTY
IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.

TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT
AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE
CARIBOU MAINE.

LAT...LON 4614 6836 4634 6838 4640 6779 4608 6779
TIME...MOT...LOC 0237Z 266DEG 43KT 4626 6788 

$$

CB

The office that day

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

Issued	Product	Office	Counties	Lasted
May 30, 9:55 PM EDT	Special Weather Statement	CAR	Aroostook	95 min

Nearby

Severe Thunderstorm Warnings in Maine, 2015 Every severe thunderstorm warning in 2015

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.