NOAA/NWS Storm Prediction Center

Current time (in UTC/GMT/Zulu):

JavaScript Must Be Enabled.

A Slight Risk of Severe Thunderstorms is Forecast Today and/or Tonight

Thunderstorms capable of isolated severe wind gusts are expected this afternoon and evening across parts of the Great Basin and Intermountain West including portions of Utah. Isolated strong to severe storms may also occur across the Upper Midwest.

For additional details, see the latest Day 1 Convective Outlook.

Critical fire weather conditions are forecast today. See details...

Critical fire weather conditions are forecast on Fri (09/23). See details...

SPC Products Overview

Hazard	Thu (09/22)	Fri (09/23)	Sat (09/24)	Sun (09/25)	Mon (09/26)	Tue (09/27)	Wed (09/28)	Thu (09/29)
Severe	Slight	Marginal	Marginal	No Area	No Area	No Area	No Area	No Area
Fire	Critical	Critical	Critical	Critical	Critical	No Area	No Area	No Area

All Products

Watches

MDs

Outlooks

Fire

Severe Weather Climatology (1982-2011)

Any Severe Probabilities: 22 Sep

Tornado Probabilities: 22 Sep

Damaging Wind Probabilities: 22 Sep

Severe Hail Probabilities: 22 Sep

Significant Tornado Probabilities: 22 Sep

Significant Wind Probabilities: 22 Sep

Significant Hail Probabilities: 22 Sep

More severe weather climatology data here.

2016 Tornado Watch Summary

Did You Know?

What's My Risk?

La tormenta factor de riesgo.

What's a Watch?

How's a Forecast Made?

Forecast Tools

SSEO

SREF

Mesoanalysis

Observed Soundings

Tornado Environment Browser

Upper-Air Maps

2016 Severe Tstm Watch Summary

Page last modified: September 22 2016 12:20 UTC

Severe Weather IQ

Tornado Safety Tips.

Latest SPC Publications

Corfidi, S.F., M.C. Coniglio, A.E. Cohen, C.M. Mead, 2016: A Proposed Revision to the Definition of "Derecho". Published in BAMS June 2016.
Corfidi, S.F., R.H. Johns, M.A. Darrow, 2016: The Great Basin Derecho of 31 May 1994. Published in Weather and Forecasting.
Line, W.E., T.J. Schmit, D.T. Lindsey, and S.J. Goodman, 2016: Use of Geostationary Super Rapid Scan Satellite Imagery by the Storm Prediction Center. Published in Weather and Forecasting. [1268K PDF]
Smith, B.T., R.L. Thompson, A.R. Dean, and P.T. Marsh, 2015: Diagnosing the Conditional Probability of Tornado Damage Rating Using Environmental and Radar Attributes. Published in Weather and Forecasting.
Cohen, A.E., S.M. Cavallo, M.C. Coniglio, and H.E. Brooks, 2015: A Review of Planetary Boundary Layer Parameterization Schemes and Their Sensitivity in Simulating Southeastern U.S. Cold Season Severe Weather Environments. Published in Weather and Forecasting.
Thompson, R.L., B.T. Smith, A. Dean, and P.T. Marsh, 2013: Spatial Distributions of Tornadic Near-Storm Environments by Convective Mode. Published in Electronic Journal of Severe Storms Meteorology.
Find more research articles at the SPC publication archive.

Latest SPC Case Archive

Sep 21, 2016	Tornado: 3	Wind: 20	Hail: 15

Tweets by @NWSSPC