Alert archive / Maine / Tornado Warnings in 2017

Tornado Warning 2, NWS Gray, ME

July 1, 2017Cumberland County, Maine

NWS Gray, ME issued this tornado warning at Jul 1, 2017, 2:22 PM EDT for Cumberland County, Maine. It was in force for 23 min. 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: Jul 1, 2017, 2:22 PM EDT (18:22 UTC)
Expired: Jul 1, 2017, 2:45 PM EDT
In force: 23 min
Issued by: NWS Gray, ME
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 0.75 in

County Cumberland County, ME

The radar

The Portland,ME radar (KGYX), 27 km from the middle of the area, began a volume at 18:21 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
Jul 1, 2:25 PM EDT	TORNADO	1 Ese East Sebago, ME	NWS STORM SURVEY CONFIRMS EF0 TORNADO OVER SEBAGO LAKE IN CUMBERLAND COUNTY MAINE. MINIMAL DAMAGE OCCURRED OVER LAND BUT NUMEROUS EYEWITNESS REPORTS... PICTURES... AND VIDEOS OF A WATERSPOUT JUST OFFSHORE OF EAST SEBAGO CONFIRM A TORNADO. MAXIMUM WINDS WERE ES
Jul 1, 2:28 PM EDT	TORNADO	East Sebago, ME	PONTOON BOAT FLIPPED ON SHORE ROAD. SEVERAL OTHER BOATS HAD COVERS AND TOPS SHREDDED. LAWN FURNITURE TORN OFF DECKS AND THROWN INTO THE LAKE
Jul 1, 2:30 PM EDT	TORNADO	1 S Big Basin, ME	TWITTER PHOTO SHOWS WATERSPOUT OVER SEBAGO LAKE. TAKEN FROM LONG BEACH LOOKING EAST.

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

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jul 1, 1:19 PM EDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Gray, ME (KGYX), launched 12:00Z, 6.4 hours before the alert went out and 26 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: 115 J/kg
Mixed-layer CIN: -97 J/kg
Mixed-layer LCL: 547 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -13 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

As transmitted.

469 
WFUS51 KGYX 011822
TORGYX
MEC005-011845-
/O.NEW.KGYX.TO.W.0002.170701T1822Z-170701T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Gray ME
222 PM EDT SAT JUL 1 2017

The National Weather Service in Gray Maine has issued a

* Tornado Warning for...
  West central Cumberland County in southwestern Maine...

* Until 245 PM EDT
    
* At 222 PM EDT, a severe thunderstorm capable of producing a tornado
  was located 7 miles southwest of Raymond, or 7 miles south of
  Naples, moving northeast at 25 mph.

  HAZARD...Tornado. 

  SOURCE...Radar indicated rotation. 

  IMPACT...Flying debris will be dangerous to those caught without 
           shelter. Mobile homes will be damaged or destroyed. 
           Damage to roofs, windows, and vehicles will occur.  Tree 
           damage is likely. 

* This dangerous storm will be near...
  Raymond around 245 PM EDT. 

Other locations impacted by this tornadic thunderstorm include Frye
Island, Sebago and Casco.

This also includes...
  Sebago Lake.
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

If on or near Sebago Lake, get away from the water and move to safe 
shelter immediately. If you can hear thunder, you are close enough 
to be struck by lightning. Severe thunderstorms can produce large 
capsizing waves, even on small bodies of water. Move into dock and 
seek safe shelter now! Do not be caught on the water in a 
thunderstorm.

&&

LAT...LON 4383 7063 4386 7065 4394 7054 4386 7048
TIME...MOT...LOC 1822Z 246DEG 21KT 4386 7061 

TORNADO...RADAR INDICATED
HAIL...<.75IN

$$
EKSTER

1 follow-up statement

872 
WWUS51 KGYX 011842
SVSGYX

Severe Weather Statement
National Weather Service Gray ME
242 PM EDT SAT JUL 1 2017

MEC005-011852-
/O.EXP.KGYX.TO.W.0002.000000T0000Z-170701T1845Z/
Cumberland ME-
242 PM EDT SAT JUL 1 2017

...THE TORNADO WARNING FOR WEST CENTRAL CUMBERLAND COUNTY WILL EXPIRE
AT 245 PM EDT...
                
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore the warning will be allowed to expire.  However heavy rain
is still possible with this thunderstorm.

Remember, a Severe Thunderstorm Warning still remains in effect.

LAT...LON 4383 7063 4386 7065 4394 7054 4386 7048
TIME...MOT...LOC 1842Z 246DEG 21KT 4390 7047 

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 1, 2:04 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Oxford	41 min
Jul 1, 3:39 PM EDT	Small Craft Advisory	GYX		16 hr
Jul 1, 3:45 PM EDT	Beach Hazards Statement	GYX	Cumberland, Knox, Lincoln, Sagadahoc, Waldo, York	29 hr
Jul 1, 3:51 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	39 min
Jul 1, 4:08 PM EDT	Areal Flood Advisory	GYX	Oxford	2 hr
Jul 1, 4:13 PM EDT	Tornado Warning	GYX	Cumberland, Oxford	47 min
Jul 1, 4:59 PM EDT	Tornado Warning	GYX	Cumberland, Oxford	28 min
Jul 1, 5:01 PM EDT	Tornado Warning	GYX	Oxford	21 min
Jul 1, 5:10 PM EDT	Flash Flood Warning	GYX	Oxford	2 hr
Jul 1, 5:26 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	64 min
Jul 1, 5:48 PM EDT	Severe Thunderstorm Warning	GYX	Cumberland, Oxford	42 min
Jul 1, 5:50 PM EDT	Severe Thunderstorm Warning	GYX	Oxford	55 min
Jul 1, 6:12 PM EDT	Flash Flood Warning	GYX	Cumberland, Franklin, Oxford	2 hr
Jul 1, 6:22 PM EDT	Tornado Warning	GYX	Androscoggin, Cumberland, Oxford	27 min
Jul 1, 6:32 PM EDT	Severe Thunderstorm Warning	GYX	Androscoggin, Cumberland, Franklin, Oxford	43 min
Jul 1, 6:58 PM EDT	Flash Flood Warning	GYX	Androscoggin, Cumberland, Oxford, York	3 hr
Jul 1, 7:04 PM EDT	Special Weather Statement	GYX	Franklin	56 min
Jul 1, 7:12 PM EDT	Special Weather Statement	GYX	Androscoggin	33 min
Jul 1, 7:38 PM EDT	Flash Flood Warning	GYX	Franklin, Kennebec, Somerset	6 hr
Jul 1, 7:49 PM EDT	Special Weather Statement	GYX	Cumberland	56 min

Nearby

Tornado Warnings in Maine, 2017 Every tornado warning in 2017 Tornadoes in 2017

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.