CPA Weather Lab/ Tools / PA Severe Weather Desk

PA Severe Weather Desk

Radar, warnings, storm reports and surface observations on one map, with SPC outlooks, SPC mesoanalysis for the Northeast and WPC rainfall outlooks alongside. All data is live from NOAA and the Iowa Environmental Mesonet; nothing needs a key.

Tornado warningSevere t-storm warningFlash flood warningWatch / otherSquares = storm reports (T tornado, W wind, H hail, R rain, F flood)Radar: NEXRAD base reflectivity mosaic

At your focus point

Active alerts

Images load straight from SPC, WPC and the NWS and refresh with the page. Click any image to open the full-size original.

Surface stations in radius

Storm reports

Lightning and storm cells from Xweather — optional, bring your own key

If you have an Xweather (Vaisala) account, paste your client ID and secret. Requests go straight from your browser to Xweather; the keys are kept only for this tab.

Go deeper

MRMS severe products
Rotation tracks, hail size, lightning density — download the grids. SPC mesoanalysis archive
Pull past mesoanalysis images for any event. Forecast model packet
Model maps, soundings and outlooks in one place. Storm catalog 1996–2025
Every NWS State College storm report on a map.

Sources: NWS API (alerts), Iowa Environmental Mesonet (NEXRAD mosaic tiles, storm reports, surface observations, SPC point outlook history), NOAA Storm Prediction Center, NOAA Weather Prediction Center, OpenStreetMap. This page is not an official warning source — always follow your local NWS office.