Enhanced Risk of Severe Thunderstorms is Forecast Today and/or Tonight
Several clusters of severe storms are expected over parts of the northern and central Plains this afternoon into tonight. Large to very large hail and damaging wind are likely, and a few tornadoes are possible.

Welcome to PlacefileNation!

Placefile Nation was created and is maintained by a team of meteorologists to provide weather data for GR2 and GR3 applications over the United States. Analyzing radar, with reliable data overlays, provides a more seamless, worry-free experience. We know this, which is why we manage and monitor our own data feeds. In an effort to make our site more useful, we appreciate feedback sent to placefilenation@gmail.com.


Placefiles

Thunderstorm Outlooks

The Storm Prediction Center in Norman, Oklahoma issues convective (thunderstorms) outlooks and discussions for significant weather impacts. Available through Placefile Nation are:

Day 1 Convective Outlook and Mesoscale Discussions:
https://placefilenation.com/Placefiles/spcday1.php
https://placefilenation.com/Placefiles/mcd.php
Sampled every 5 minutes

Day 1 Tornado, Hail, and Wind Probabilities
https://placefilenation.com/Placefiles/tornado.php
https://placefilenation.com/Placefiles/hail.php
https://placefilenation.com/Placefiles/wind.php
Sampled every 5 minutes

Day 2 and Day 3 Convective Outlooks:
https://placefilenation.com/Placefiles/spcday2.php
https://placefilenation.com/Placefiles/spcday3.php
Sampled every 30 minutes

Watches and Warnings

Get realtime county watch, advisories, and alert data, color-coded to NWS standards. This includes empty-fill polygons and filled, county-based watches, warnings, and alerts. Get flood warnings and advisories along with Special Weather Statements with the Polygon placefile. Just need the severe and tornado watches, just use the severeWatch placefile.

https://placefilenation.com/Placefiles/severeWatch.php
https://placefilenation.com/Placefiles/nws_alerts.php
--- Shaded ---
https://placefilenation.com/Placefiles/nws_polygons.php
--- Not Shaded ---
https://placefilenation.com/Placefiles/nws_noshade_polygons.php
Sampled every 5 minutes



Misc Plots

Plot the County Warning Areas, radar status, and TN Mile Markers.

https://placefilenation.com/Placefiles/nws_cwa_boundaries.php
https://placefilenation.com/Placefiles/radar_status.php
https://placefilenation.com/Placefiles/TN_MileMarkers.php https://placefilenation.com/Placefiles/hospitals_tn.php

Near Real-Time Lightning

Plot total lightning data (intra-cloud and cloud-to-ground) near realtime:

20 to 60 minute combined lightning strikes
https://placefilenation.com/Placefiles/60lightning.php
20 to 40 minute combined lightning strikes
https://placefilenation.com/Placefiles/40lightning.php
20 minute lightning strikes
https://placefilenation.com/Placefiles/20lightning.php
Sampled every 4 minutes.






Crowd-sourced mPING Data

See what spotters and weather enthusiasts see and report! Icons are larger and more representative of mPING data. For example, hail reports are readable without having to hover over the icon. Numerical output is built right into the hail placefile.

https://placefilenation.com/Placefiles/mping_15min.php
https://placefilenation.com/Placefiles/mping_30min.php
https://placefilenation.com/Placefiles/mping_60min.php
https://placefilenation.com/Placefiles/mping_300min.php
Sampled every 4 minutes.



MTEARS

Visually see the repeaters of MTEARS linked across Tennessee!

https://placefilenation.com/Placefiles/mtears_connected.php
https://placefilenation.com/Placefiles/mtears_no_connections.php

Observations

Placefile Nation brings color-coded observation data to GR applications, making them easy-to-read. With our METAR observations, visually see the wind direction and speed, along with gusts, temperature, dew points, pressure and visibility. The center plot will depict the weather conditions reported.

https://placefilenation.com/Placefiles/metars.php
Sampled every 20 minutes

Placefile Nation now brings additional color-coded observation data. The links below are individual placefiles for temp, dewpoint, visibility, wind gusts, and heat index.

https://placefilenation.com/Placefiles/temps.php
https://placefilenation.com/Placefiles/dp.php
https://placefilenation.com/Placefiles/vis.php
https://placefilenation.com/Placefiles/gusts.php
https://placefilenation.com/Placefiles/hi.php
Sampled every 20 minutes


CoCoRaHS Data

Visually see the cocorahs rain and snow reports from across the US.

https://placefilenation.com/Placefiles/cocorahs_rain.php
https://placefilenation.com/Placefiles/cocorahs_snow.php
Zeros and Traces are removed
Sampled every 30 minutes from 11Z to 20Z



Tennessee APRS

See the APRS stations specific to !TNWX hams across Middle Tennessee and stations in and around TN.

https://placefilenation.com/Placefiles/aprs.php?filter=tnwx
https://placefilenation.com/Placefiles/aprs.php



Color Curves

BR Color Curve

Base Reflectivity
(BR/Z)

https://placefilenation.com/pal/placefilenation_br.pal

BV Color Curve

Base Velocity
(BV/V)

https://placefilenation.com/pal/placefilenation_bv.pal

SRV Color Curve

Storm-Relative Velocity (SRV/SRM)

https://placefilenation.com/pal/placefilenation_srv.pal