⛈️ Severe Weather Center

Your Intelligent Weather Source for the Great Smoky Mountains

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⚠️ WEATHER ALERT

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⚠️ NOTICE: For official weather warnings and forecasts, please visit NWS Morristown or NWS Greenville-Spartanburg.

⚡ Quick View

Instant situational awareness for the Smokies region

🚨 Active Alerts Map

🌧️ Regional Radar Loop

NWS Morristown Radar Loop

NWS Morristown (KMRX) | Updates every 2-5 minutes

THREAT CALCULATIONS DASHBOARD ©

Real-Time, Rolling 3 Hour Assessment for the Smokies Region

⚠️ Important Notes

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🌦️ Situational Analysis

Real-time data and tools

📍 Storm Reports

Today's severe weather reports from the Storm Prediction Center.

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Tornado
Wind Damage
Hail

Data from NOAA Storm Prediction Center | Updates every 10 minutes

🎯 SPC Outlooks

Storm Prediction Center convective outlooks - custom Smokies view

Marginal (1)
Slight (2)
Enhanced (3)
Moderate (4)
High (5)

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View Full SPC Outlooks →

Outlooks updated 4x daily (0100, 0600, 1300, 1630 UTC)

⚡ Lightning Detection

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Real-Time Lightning Map

Lightning strikes within 150 miles of the Smokies

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🔬 Research Radar

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Advanced Radar Products

Base Reflectivity, Composite, Echo Tops

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📈 Technical Analysis

COMING SOON

Advanced atmospheric analysis tools for severe weather forecasting

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Skew-T Diagram

Atmospheric soundings

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CAPE Map

Convective energy

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Helicity Map

Rotation potential

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Wind Shear

Shear profiles

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Jet Stream

Upper-level analysis

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Surface Analysis

Fronts & pressure

View SPC Mesoanalysis (External) →

ℹ️ How to Use This Dashboard

🎯 Threat Level Scale (0-5)

Each threat is rated on a 5-point scale representing increasing likelihood and severity:

0.0
None
No threat expected
1.0
Minimal
~25% chance
Isolated impacts possible
2.0
Moderate
~50% chance
Scattered impacts likely
3.0
High
~75% chance
Widespread impacts expected
4.0
Severe

Imminent and severe
5.0
Extreme

Imminent, severe to catastrophic

📊 How to Read This Dashboard

  • Cards: Show the highest current threats across the region, in order of severity
  • Hour 1, 2, 3: Rolling 3-hour forecast showing how threats evolve
  • Valley / Foothills / Mountains: Threats broken down by elevation zone
  • Arrows (→): Indicate increasing (↗) or decreasing (↘) trends
  • Valid Time: When the forecast applies (always in the future)

🏔️ Elevation Zones

Valley

890-1410 feet

Vonore, Chestnut Hill, Greeneville

Foothills

1919-2230 feet

Tellico, Whittier, Seven Mile Ridge

Mountains

5699-6605 feet

Balsam, Clingmans Dome

🔄 Update Information

  • Update Frequency: Every 20 minutes (:09, :29, :49 of each hour)
  • Data Source: RAP (Rapid Refresh) numerical weather model
  • Forecast Horizon: 1-3 hours ahead
  • Resolution: 13km horizontal grid, 8 sampling locations