Alert archive / Maine / Special Weather Statements in 2021

Special Weather Statement, NWS Caribou, ME

May 26, 2021

NWS Caribou, ME issued this special weather statement at May 26, 2021, 9:30 PM EDT. It was in force for 30 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 26, 2021, 9:30 PM EDT (01:30 UTC)
Expired
May 26, 2021, 10:00 PM EDT
In force
30 min
Issued by
NWS Caribou, ME

The radar

The Caribou radar (KCBW), 41 km from the middle of the area, began a volume at 01:33 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, 1.5 hours before the alert went out and 80 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-pSkew-T log-p diagram, Caribou, ME at 00:00Z on 2021-05-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 103 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Caribou, ME at 00:00Z on 2021-05-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
103 J/kg
Mixed-layer CIN
-270 J/kg
Mixed-layer LCL
1287 m above ground
0-6 km bulk shear
46 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
61 m²/s²
Significant tornado parameter
0.0
Supercell composite
-0.0

Open this sounding in Storm Lab

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, May 26, 8:12 PM EDT, 1 hour 18 minutes before
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Special weather statement, May 26, 8:37 PM EDT, 53 minutes before
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<body>
  <main class="wrap">
    <section class="card" role="status" aria-live="polite">
      <div class="status" id="status">Temporary Notice</div>
      <h1 id="headline">This service is currently unavailable.</h1>
      <p id="message1">
        The site you requested is temporarily down for maintenance or an unexpected outage.
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      <p id="message2">
        Please try again in a few minutes.
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        If you are an administrator, restore upstream service and remove the redirect/fallback rule when normal operations resume.
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Special weather statement, May 26, 9:04 PM EDT, 26 minutes before
Special Weather Statement
National Weather Service Caribou ME
904 PM EDT Wed May 26 2021

MEZ004>006-270130-
Southeast Aroostook-Northern Piscataquis-Northern Penobscot-
904 PM EDT Wed May 26 2021

...A LINE OF STRONG THUNDERSTORMS WILL AFFECT EAST CENTRAL
PISCATAQUIS AND NORTH CENTRAL PENOBSCOT COUNTIES...

At 904 PM EDT, radar indicated strong thunderstorms were located
along a line extending from 8 miles southwest of Moosehorn Crossing
to near Ripogenus. Movement was east at 50 mph.

Wind gusts up to 50 mph and pea size hail are possible with these
storms.

Locations impacted include...
Patten, Mount Katahdin, Mount Chase, Baxter State Park, Katahdin
Woods and Waters National Monument, South Branch Pond, Shin Pond,
Grand Lake Matagamon, Grand Lake Seboeis, Katahdin Lake and Moro
Plantation.

These storms may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 4636 6831 4591 6858 4589 6932 4627 6898
TIME...MOT...LOC 0104Z 257DEG 45KT 4624 6886 4591 6922

Sinko
Special weather statement, May 26, 9:30 PM EDT, 0 minutes before
Special Weather Statement
National Weather Service Caribou ME
930 PM EDT Wed May 26 2021

MEZ002-005-006-270200-
Southeast Aroostook-Northeast Aroostook-Northern Penobscot-
930 PM EDT Wed May 26 2021

...A LINE OF SHOWERS WILL AFFECT SOUTHEASTERN AROOSTOOK AND NORTH
CENTRAL PENOBSCOT COUNTIES...

At 930 PM EDT, radar indicated showers were located along a line
extending from 6 miles south of Masardis to near Katahdin Woods and
Waters National Monument. Movement was east at 45 mph.

Wind gusts up to 50 mph are possible with these showers.

Locations impacted include...
Patten, Mars Hill, Island Falls, Bridgewater, Smyrna, Mount Chase,
Shin Pond, Dudley Township, Smyrna Mills, Katahdin Woods and Waters
National Monument, Scopan, Monticello, Oakfield, Blaine, Merrill,
Crystal, Dyer Brook, Hersey, Dudley and Webbertown.

This includes the following highways...
 Interstate 95 between mile markers 273 and 287.
 US Highway 1 between Bridgewater and Blaine.
 State Highway 11 between Patten and Knowles Corner.

If outdoors, consider seeking shelter inside a building.

Heavy downpours may cause ponding of water on roadways.

LAT...LON 4597 6827 4592 6882 4597 6883 4646 6835
      4652 6779 4649 6778
TIME...MOT...LOC 0130Z 257DEG 39KT 4642 6831 4594 6880

Sinko

The office that day

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

IssuedProductOfficeCountiesLasted
May 26, 8:12 PM EDTSpecial Weather StatementCARAroostook33 min
May 26, 8:37 PM EDTSpecial Weather StatementCARPiscataquis23 min
May 26, 9:04 PM EDTSpecial Weather StatementCARPiscataquis26 min
May 26, 9:58 PM EDTSpecial Weather StatementCAR32 min
May 27, 2:49 AM EDTFrost AdvisoryCARPenobscot, Piscataquis, Washington27 hr
May 27, 2:49 AM EDTFreeze WarningCARAroostook, Penobscot27 hr

Nearby

Special Weather Statements in Maine, 2021Every special weather statement 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.