Cyclocane

( cyclocane is a CYCLOne and hurriCANE tracker by hayley )

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HELENE Current Status

Current Wind Speed 15 knots / 15 MPH

Max Predicted Wind Speed 15 knots / 15 MPH at 2024-09-28T15:00:00.000Z

Current Watches/Warnings / Radar / Satellite

current US watches/warnings

live tornado/thunderstorm tracker - tornadohq

future radar imagery - my future radar

current radar loop

If you're looking for other US radar loops, check out Radar Monster.

future radar imagery

(above image is an example of the Western North Atlantic page - see Atlantic future radar page for a full set of images)

If a tropical storm or hurricane is threatening land, you can check my future radar for an idea of what radar might look like as the storm approaches.

HELENE Land Hazards

• RAINFALL - Over portions of the central and southern Appalachians, Helene is expected to produce additional rainfall amounts of 1 to 2 inches leading to widespread total rainfall accumulations of 6 to 12 inches, with isolated totals exceeding 20 inches. This rainfall will result in catastrophic and potentially life-threatening flash and urban flooding, along with record level river flooding in many instances. Numerous significant landslides are expected in steep terrain across the southern Appalachians. Elsewhere, 1 to 3 inches of rainfall is expected across portions of the Ohio Valley through Sunday evening.
• TORNADOES - Isolated tornadoes are possible this afternoon and evening over southern Virginia and northeast North Carolina.
• SURF - Swells generated by Helene will affect the coasts of Georgia and the Carolinas during the next day or so. These swells are likely to cause life-threatening surf and rip current conditions. Please consult products from your local weather office.

HELENE Tracker

HELENE Satellite Loop

HELENE Alternate Tracking Map

HELENE Spaghetti Models

Spaghetti models for HELENE can be found here:

HELENE spaghetti models page »

HELENE Watches and Warnings

Post-Tropical Cyclone HELENE Tropical Cyclone Update

Post-Tropical Cyclone HELENE Public Advisory

511 
WTNT34 KNHC 272035
TCPAT4
 
BULLETIN
Post-Tropical Cyclone Helene Advisory Number  18
NWS National Hurricane Center Miami FL       AL092024
400 PM CDT Fri Sep 27 2024
 
...HELENE STILL PRODUCING CATASTROPHIC FLOODING OVER PORTIONS OF
THE SOUTHERN APPALACHIANS AND TENNESSEE VALLEY...
...FUTURE ADVISORIES WILL BE ISSUED BY THE WEATHER PREDICTION
CENTER...
 
 
SUMMARY OF 400 PM CDT...2100 UTC...INFORMATION
----------------------------------------------
LOCATION...37.5N 85.5W
ABOUT 50 MI...80 KM SSE OF LOUISVILLE KENTUCKY
MAXIMUM SUSTAINED WINDS...35 MPH...55 KM/H
PRESENT MOVEMENT...NNW OR 330 DEGREES AT 17 MPH...28 KM/H
MINIMUM CENTRAL PRESSURE...984 MB...29.06 INCHES
 
 
WATCHES AND WARNINGS
--------------------
There are no coastal watches or warnings in effect.

For storm information specific to your area, please monitor 
products issued by your local National Weather Service forecast 
office.
 
DISCUSSION AND OUTLOOK
----------------------
At 400 PM CDT (2100 UTC), the center of Post-Tropical Cyclone Helene
was located near latitude 37.5 North, longitude 85.5 West. The
post-tropical cyclone is moving toward the north-northwest near 17
mph (28 km/h). A slowdown in forward speed is expected, and the 
system is forecast to stall over the Tennessee Valley late tonight 
and through the weekend.
 
Maximum sustained winds are near 35 mph (55 km/h) with higher gusts.
Continued weakening is expected during the next couple of days.
 
The estimated minimum central pressure is 984 mb (29.06 inches).
 
 
HAZARDS AFFECTING LAND
----------------------
Key Messages for Helene can be found in the Tropical Cyclone
Discussion under AWIPS header MIATCDAT4 and WMO header WTNT44 KNHC
and on the web at hurricanes.gov/text/MIATCDAT4.shtml
 
RAINFALL: Over portions of the central and southern Appalachians, 
Helene is expected to produce additional rainfall amounts of 1 to 2 
inches leading to widespread total rainfall accumulations of 6 to 12 
inches, with isolated totals exceeding 20 inches. This rainfall will 
result in catastrophic and potentially life-threatening flash and 
urban flooding, along with record level river flooding in many 
instances. Numerous significant landslides are expected in steep 
terrain across the southern Appalachians. Elsewhere, 1 to 3 inches 
of rainfall is expected across portions of the Ohio Valley through 
Sunday evening.

For a complete depiction of forecast rainfall associated with 
Tropical Storm Helene, please see the National Weather Service Storm 
Total Rainfall Graphic, available at 
hurricanes.gov/graphics_at4.shtml?rainqpf and the Flash Flood Risk 
graphic at hurricanes.gov/graphics_at4.shtml?ero. 

For a list of rainfall observations (and wind reports) associated 
this storm, see the companion storm summary at WBCSCCNS4 with the 
WMO header ACUS44 KWBC or at the following link:
www.wpc.ncep.noaa.gov/discussions/nfdscc4.html. 
 
TORNADOES: Isolated tornadoes are possible this afternoon and 
evening over southern Virginia and northeast North Carolina.
 
SURF: Swells generated by Helene will affect the coasts of Georgia
and the Carolinas during the next day or so.  These swells are
likely to cause life-threatening surf and rip current conditions.
Please consult products from your local weather office.
 
 
NEXT ADVISORY
-------------
This is the last public advisory issued by the National Hurricane 
Center on Helene.  Future information on this system can be 
found in Public Advisories issued by the Weather Prediction Center 
beginning at 1000 PM CDT, under AWIPS header TCPAT4, WMO 
header WTNT34 KWNH, and on the web at www.hurricanes.gov.

Rainfall forecasts for the United States can always be found at 
https://www.wpc.ncep.noaa.gov/qpf/qpf2.shtml 
and outlooks of flash flood risks can be found at 
https://www.wpc.ncep.noaa.gov/qpf/excessive_rainfall_outlook_ero.php
.
 
$$
Forecaster Cangialosi

Public Advisory not available for this storm.

Post-Tropical Cyclone HELENE Forecast Discussion

ZCZC NFDTCDAT4 ALL
TTAA00 KWNH DDHHMM
 
Post-Tropical Cyclone Helene Discussion Number  21
NWS Weather Prediction Center College Park MD   AL092024
1000 AM CDT Sat Sep 28 2024
 
KEY MESSAGES:
 
1. Widespread significant river flooding is ongoing across the
southern Appalachians, some of which are record-breaking.
Conditions will continue to improve today, following the 
catastrophic flooding over the past two days.
 
2. There is a possibility of long-duration power outages in
portions of the southeast U.S. If you use a generator, be sure it
is placed outside at least 20 feet away from doors, windows, and
garages to avoid deadly carbon monoxide poisoning.
 
3. Use caution after the system passes as deadly hazards remain
including downed power lines and flooded areas.
 
 
FORECAST POSITIONS AND MAX WINDS
 
INIT  28/1500Z 36.6N  87.4W   15 KT  15 MPH...POST-TROP/EXTRATROP
 12H  29/0000Z 36.5N  87.0W   15 KT  15 MPH...POST-TROP/EXTRATROP
 24H  29/1200Z 36.3N  86.5W   15 KT  15 MPH...POST-TROP/EXTRATROP
 36H  30/0000Z 36.1N  86.0W   15 KT  15 MPH...POST-TROP/EXTRATROP
 48H  30/1200Z...DISSIPATED
 
$$
Forecaster Gallina
 
NNNN

HELENE storm path from NHC

site by Hayley Croft

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