NWS Special Weather Statement (SPS) Polygons

The IEM attempts to process and archive special weather statements (SPS) This page offers a download of the SPS polygons and some limited associated metadata.

Related:   SPS Search by Point   SPS Text Download

Time Interval for SPS *Issuance* (UTC)
Year	Month	Day	Hour	Minute
Start:	20022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024	JanFebMarAprMayJunJulAugSepOctNovDec	12345678910111213141516171819202122232425262728293031	0 UTC1 UTC2 UTC3 UTC4 UTC5 UTC6 UTC7 UTC8 UTC9 UTC10 UTC11 UTC12 UTC13 UTC14 UTC15 UTC16 UTC17 UTC18 UTC19 UTC20 UTC21 UTC22 UTC23 UTC	01234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859
End:	20022003200420052006200720082009201020112012201320142015201620172018201920202021202220232024	JanFebMarAprMayJunJulAugSepOctNovDec	12345678910111213141516171819202122232425262728293031	0 UTC1 UTC2 UTC3 UTC4 UTC5 UTC6 UTC7 UTC8 UTC9 UTC10 UTC11 UTC12 UTC13 UTC14 UTC15 UTC16 UTC17 UTC18 UTC19 UTC20 UTC21 UTC22 UTC23 UTC	01234567891011121314151617181920212223242526272829303132333435363738394041424344454647484950515253545556575859

Shapefile DBF schema:

Field 0: Type=C/String, Title=`ISSUE', SPS Issuance Timestamp UTC
Field 1: Type=C/String, Title=`EXPIRE', SPS Expiration Timestamp UTC
Field 2: Type=C/String, Title=`PROD_ID', IEM Text Product Identifier
Field 3: Type=C/String, Title=`WFO', 3 Character Issuance WFO
Field 4: Type=C/String, Title=`LNDSPOUT', Landspout IBW Tag
Field 5: Type=C/String, Title=`WTRSPOUT', Waterspout IBW Tag
Field 6: Type=C/String, Title=`MAX_HAIL', Max Hail Size
Field 7: Type=C/String, Title=`MAX_WIND', Max Wind Gust
Field 8: Type=C/String, Title=`TML_VALD', Time-Motion-Location Timestamp UTC
Field 9: Type=N/Double, Title=`TML_DRCT', Time-Motion-Location Storm Motion
Field 10: Type=N/Double, Title=`TML_SKNT', Time-Motion-Location Storm Speed kt

Archive / Usage Notes:

1. Presently, only those SPS products with a polygon are returned.