National Hourly HRRR Analyses and Forecasts

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These analysis and forecast maps are updated hourly from the operational 3km High-Resolution Rapid Refresh (HRRR) model.
Clicking on the desired product will load the most recent analysis of that product onto the page. Only one product can be displayed at a time.
You can view the previous 11 hours up through the next 6 hours by placing your cursor over the desired hour below the map (-11h, ..., 0h, ..., +6h).

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REFL   |   SLP   |   850mb   |   700mb   |   500mb   |   200mb  ]

TEMP   |   DEWPT   |   RH   |   WC/HI   |   CAPE/CIN   |   θe/SfcConv   |   PW/LI   |   HvyRain  ]

Show SPC Conv Outlook       Hide SPC Conv Outlook
-11h -10h -9h -8h -7h -6h -5h -4h -3h -2h -1h 0h +1h +2h +3h +4h +5h +6h

The High-Resolution Rapid Refresh (HRRR) hourly analyses and forecasts are courtesy of NOAA/NCEP.
Convective Outlooks courtesy of NOAA/SPC.

* The "HvyRain" parameter is only calculated in areas where CAPE>0 and PW>2.5cm.
It combines precipitable water (PW), surface relative humidity (RH), 850mb temperature advection (TA), and the 925-500mb wind shear magnitude (SHR) in the following way:
PrecPot = {36*PW + RH + 4*TA + 4*(25-SHR)}/4     (PW in cm, RH in %, TA in C/h, SHR in kts).
The line contours show 850mb temperature advection, with blue for negative and red for positive. The wind barbs show the 925-500mb shear vector.



Created & Maintained by Brian McNoldy

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