National Weather Service United States Department of Commerce

Hot and Humid Conditions Expected Tuesday, with Severe Thunderstorms Likely Tuesday evening

High temperatures are expected Tuesday. Heat Advisories are in effect for much of the region from 11 AM to 8 PM Tuesday. Heat index values between 93 and 103 degrees are expected. Take extra precautions when outside. Severe Thunderstorms are likely Tuesday evening after sunset, especially near the International Border. Damaging winds will be the main threat, with large hail and a tornado possible. Read More >

Latest Aviation Forecast Discussion
.AVIATION /00Z TUESDAY THROUGH SATURDAY/...
Through 00Z Wednesday...VFR conditions will continue with the 
primary threat to aviators being some LLWS overnight into 
Tuesday 05-14Z. Winds will decrease overnight under nocturnal 
stability. As westerly flow aloft increases, some LLWS will 
develop and continue through daybreak. Coupling south to 
southwest surface winds 12-15Z will remove the threat of LLWS, 
but will result in some SFC gusts 20-25kts in general and up to 
30kts at MSS where flow aligns with the St Lawrence Valley. 
Weather will mainly hold off until after 00z Wednesday.

Outlook...

Tuesday Night: VFR. Chance SHRA, Slight chance TSRA.
Wednesday: VFR. NO SIG WX.
Wednesday Night: VFR. NO SIG WX.
Thursday: VFR. Slight chance SHRA, Slight chance TSRA.
Thursday Night: VFR. NO SIG WX.
Friday: VFR. NO SIG WX.
Friday Night: VFR. NO SIG WX.
Saturday: VFR. Chance SHRA, Chance TSRA.

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Radar Loop

Current Weather Map

Flight Category

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Visible Satellite

Infrared Satellite Loop

IR Satellite

Expected 24-hr Snowfall

Expected 24-hr Snowfall

Expected 24-hr Ice Accumulation

Expected 24-hr Ice Accumulation

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Radar Loop

Radar Loop

Convective SIGMETs

Convective SIGMETs

TFM Convective Forecast (TCF)

4-hr TCF

SPC Day 1 Convective Outlook

SPC Day 1 Convective Outlook

SPC Day 2 Convective Outlook

SPC Day 1 Convective Outlook

SPC Day 3 Convective Outlook

SPC Day 1 Convective Outlook

Current Icing SIGMETs

Icing SIGMETs

CIP/FIP Icing Guidance

CIP/FIP Icing Guidance

00-03 hr Icing AIRMETs

0-3 hr Icing AIRMETs

03-06 hr Icing AIRMETs

3-6 hr Icing AIRMETs

06-09 hr Icing AIRMETs

6-9 hr Icing AIRMETs

09-12 hr Icing AIRMETs

9-12 hr Icing AIRMETs

Current Turb SIGMETs

Turb SIGMETs

Turbulence Guidance (GTG)

GTG

00-03 hr Turb/LLWS AIRMETs

0-3 hr Turb/LLWS AIRMETs

03-06 hr Turb/LLWS AIRMETs

3-6 hr Turb/LLWS AIRMETs

06-09 hr Turb/LLWS AIRMETs

6-9 hr Turb/LLWS AIRMETs

09-12 hr Turb/LLWS AIRMETs

9-12 hr Turb/LLWS AIRMETs

00-03 hr Visibility AIRMETs

0-3 hr Visibility AIRMETs

03-06 hr Visibility AIRMETs

3-6 hr Visibility AIRMETs

06-09 hr Visibility AIRMETs

6-9 hr Visibility AIRMETs

09-12 hr Visibility AIRMETs

9-12 hr Visibility AIRMETs