Alert archive / New Hampshire / Heat Advisories in 2021
Heat Advisory 6, NWS Gray, ME
NWS Gray, ME issued this heat advisory at Jul 16, 2021, 3:19 AM EDT for York County, Maine; Hillsborough County, Rockingham County, Strafford County, New Hampshire. It took effect at Jul 16, 2021, 2:00 PM EDT. It was in force for 4 hr.
The area
The counties it named.
The facts
- Issued
- Jul 16, 2021, 3:19 AM EDT (07:19 UTC)
- In effect from
- Jul 16, 2021, 2:00 PM EDT
- Expired
- Jul 16, 2021, 5:56 PM EDT
- In force
- 4 hr
- Issued by
- NWS Gray, ME
Counties York County, ME, Hillsborough County, NH, Rockingham County, NH, Strafford County, NH
The radar
The Portland,ME radar (KGYX), 108 km from the middle of the area, began a volume at 07:18 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
Albany, NY (KALY), launched 00:00Z, 7.3 hours before the alert went out and 226 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
- 609 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1287 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 75 m²/s²
- 0-3 km storm-relative helicity
- 194 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 4.0
What forecasters said that day
The local office's own words before this heat advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Gray, ME wrote its last area forecast discussion before this heat advisory went out at Jul 16, 12:59 AM EDT, 2 hours 20 minutes earlier.
Area forecast discussion, Jul 16, 12:59 AM EDT, 2 hours 20 minutes before
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</html>The office that day
Everything else NWS Gray, ME issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 15, 9:42 PM EDT | Dense Fog Advisory | GYX | Cumberland, Kennebec, Knox, Lincoln, Sagadahoc, Waldo | 8 hr |
| Jul 16, 11:49 AM EDT | Special Weather Statement | GYX | Kennebec | 26 min |
| Jul 16, 12:15 PM EDT | Special Weather Statement | GYX | Waldo | 30 min |
| Jul 16, 1:51 PM EDT | Special Weather Statement | GYX | Waldo | 39 min |
| Jul 16, 2:03 PM EDT | Severe Thunderstorm Warning | GYX | Waldo | 42 min |
| Jul 16, 2:15 PM EDT | Special Marine Warning | GYX | 60 min | |
| Jul 16, 3:11 PM EDT | Special Weather Statement | GYX | Knox | 49 min |
| Jul 16, 4:51 PM EDT | Special Weather Statement | GYX | York | 24 min |
| Jul 16, 5:22 PM EDT | Special Marine Warning | GYX | 23 min |
Nearby
Heat Advisories in New Hampshire, 2021Heat Advisories in Maine, 2021Every heat advisory 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.