| Number (In Section 4, octet 11) |
Parameter | Units |
Abbrev |
|---|---|---|---|
| 0 | Reserved | ||
| 1 | Downburst | See Table 4.253 | DBURSTHI |
| 2 | Lightning (Electrical Storm) | See Table 4.253 | LTNGHI |
| 3 | Thunderstorm | See Table 4.253 | TSTMHI |
| 4 | Coastal Flood | See Table 4.253 | COASTFLDHI |
| 5 | Estuarine (Coastal) Flood | See Table 4.253 | ESTFLDHI |
| 6 | Flash Flood | See Table 4.253 | FFLDHI |
| 7 | Fluvial (Riverine) Flood | See Table 4.253 | FLUVFLDHI |
| 8 | Groundwater Flood | See Table 4.253 | GFLDHI |
| 9 | Ice-Jam Flood Including Debris | See Table 4.253 | IJFLDHI |
| 10 | Ponding (Drainage) Flood | See Table 4.253 | PFLDHI |
| 11 | Snowmelt Flood | See Table 4.253 | SMFLDHI |
| 12 | Surface Water Flooding | See Table 4.253 | SWFLDHI |
| 13 | Glacial Lake Outburst Flood | See Table 4.253 | GLOFLDHI |
| 14 | Black Carbon (Brown Clouds) | See Table 4.253 | BCHI |
| 15 | Dust Storm or Sandstorm | See Table 4.253 | DSTMHI |
| 16 | Fog | See Table 4.253 | FOGHI |
| 17 | Haze | See Table 4.253 | HZHI |
| 18 | Polluted Air | See Table 4.253 | POLAIRHI |
| 19 | Sand Haze | See Table 4.253 | SAHZHI |
| 20 | Smoke | See Table 4.253 | SMOKEHI |
| 21 | Ocean Acidification | See Table 4.253 | OAHI |
| 22 | Rogue Wave | See Table 4.253 | RWAVEHI |
| 23 | Sea Water Intrusion | See Table 4.253 | SWIHI |
| 24 | Sea Ice (Icebergs) | See Table 4.253 | SICEHI |
| 25 | Ice Flow | See Table 4.253 | ICEFLOWHI |
| 26 | Seiche | See Table 4.253 | SEICHEHI |
| 27 | Storm Surge | See Table 4.253 | SURGEHI |
| 28 | Storm Tides | See Table 4.253 | STMTIDEHI |
| 29 | Tsunami | See Table 4.253 | TSUNAMIHI |
| 30 | Depression or Cyclone (Low Pressure Area) (Pressure-Related) | See Table 4.253 | DEPRESHI |
| 31 | Extra-Tropical Cyclone (Pressure-Related) | See Table 4.253 | ECPRESHI |
| 32 | Sub-Tropical Cyclone (Pressure-Related) | See Table 4.253 | SUBTCPRESHI |
| 33 | Acid Rain | See Table 4.253 | ACIDRAINHI |
| 34 | Blizzard | See Table 4.253 | BLIZHI |
| 35 | Drought | See Table 4.253 | DRTHI |
| 36 | Hail | See Table 4.253 | HAILHI |
| 37 | Ice Storm | See Table 4.253 | ICESTMHI |
| 38 | Snow | See Table 4.253 | SNOWHI |
| 39 | Snowstorm | See Table 4.253 | SNOWSTMHI |
| 40 | Cold Wave | See Table 4.253 | CWAVEHI |
| 41 | Dzud | See Table 4.253 | DZUDHI |
| 42 | Freeze | See Table 4.253 | FRZHI |
| 43 | Frost (Hoar Frost) | See Table 4.253 | FROSTHI |
| 44 | Freezing Rain (Supercooled Rain) | See Table 4.253 | FRZRHI |
| 45 | Glaze | See Table 4.253 | GLAZEHI |
| 46 | Ground Frost | See Table 4.253 | GFROSTHI |
| 47 | Heatwave | See Table 4.253 | HWAVEHI |
| 48 | Icing (including Ice) | See Table 4.253 | ICINGHI |
| 49 | Thaw | See Table 4.253 | THAWHI |
| 50 | Avalanche | See Table 4.253 | AVALHI |
| 51 | Mud Flow | See Table 4.253 | MUDFLOWHI |
| 52 | Rock Slide | See Table 4.253 | RSLIDEHI |
| 53 | Derecho | See Table 4.253 | DERECHOHI |
| 54 | Gale (Strong Gale) | See Table 4.253 | GALEHI |
| 55 | Squall | See Table 4.253 | SQLNHI |
| 56 | Subtropical Storm | See Table 4.253 | SSTMHI |
| 57 | Tropical Cyclone (Cyclonic Wind, Rain [Storm] Surge) (Wind-Related) | See Table 4.253 | TCWINDHI |
| 58 | Tropical Storm (Wind-Related) | See Table 4.253 | TSWINDHI |
| 59 | Tornado | See Table 4.253 | TORHI |
| 60 | Wind | See Table 4.253 | WINDHI |
| 61-190 |
Reserved | ||
| 191-254 |
Reserved for Local Use |
||
| 255 |
Missing |