May brought beneficial rain to the northwestern part of South Central Texas where most of the region received above 75% of normal. Some locations in Val Verde and Edwards County saw more than 150% of normal.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS EWX wrote it up.
May brought beneficial rain to the northwestern part of South Central Texas where most of the region received above 75% of normal. Some locations in Val Verde and Edwards County saw more than 150% of normal. This led to the end of severe (D2) drought in Bandera, Edwards, Kerr, and Real Counties.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Austin/San Antonio, TX wrote its last area forecast discussion before the first event at Apr 30, 11:44 PM CST, 16 minutes earlier.
Area Forecast Discussion National Weather Service Austin/San Antonio TX 1244 AM CDT Tue May 1 2018 .AVIATION DISCUSSION...FOR 06Z TAF PERIOD... At TAF issuance time, widespread MVFR ceilings were observed on IR satellite impacting all terminals. The expectation over the next several hours is continued lowering of ceilings to the IFR level before sunrise, maintained elevated winds out of the southeast, and possibly some light fog. The elevated winds should serve to temper fog so visibility may be sporadic. Improvement tomorrow will likely be slow throughout the morning, and only reaching MVFR which should prevail through the afternoon. && .PREV DISCUSSION... /ISSUED 958 PM CDT Mon Apr 30 2018/ UPDATE... Based on latest radar trends and model data from the RAP, NAM12 and HRRR, have decided to remove PoPs from areas mainly west of Highway 83 for the rest of the tonight period. The above mentioned models suggest few isolated showers late tonight and then becoming very light or drizzle type between Highway 281 and Highway 77. Rainfall accumulations will be limited to few hundredths of an inch. PREV DISCUSSION... /ISSUED 644 PM CDT Mon Apr 30 2018/ AVIATION... Strong low level southeasterly flow will continue for the next 24 hours. This will keep low ceilings in place. MVFR ceilings in Austin and San Antonio will drop to IFR overnight. There will be a slight chance for rain this evening and overnight, but probability is too low to include in the TAFs. Any showers will be light and won't change category. Tuesday ceilings will only lift to MVFR. At DRT, the ceiling will drop to MVFR this evening and then to IFR overnight. There will also be a slight chance for showers, but any rain will not change category. Ceiling will rebound to VFR by mid- afternoon Tuesday. PREV DISCUSSION... /ISSUED 303 PM CDT Mon Apr 30 2018/ SHORT TERM (Tonight through Tuesday Night)... The mid level shortwave over the CWA continues to weaken and will pull away to the northeast. Elevated deeper convection has remained isolated with no lightning thus far. Isolated showers are also ongoing beneath the cap. Upstream, convection along the dry line in West Texas should remain well north of the region this evening. However, a few CAMs members do develop Serranias del Burro convection through the afternoon and move the convection southeast toward the Rio Grande. Confidence is currently low in this reaching the western CWA and conditional on if convective inhibition is able to erode through the afternoon. We will continue with a 20 PoP for Val Verde, Kinney, and Maverick counties. However, any storms that do form will be capable of becoming strong to severe. Overnight, through the day on Tuesday, and into Tuesday night the cap will remain in place across much of the CWA. Isolated to widely scattered showers are indicated to develop beneath the cap with strengthening low level jet across the western half of the CWA overnight and spread slightly east Tuesday morning before decreasing in coverage Tuesday afternoon. LONG TERM (Wednesday through Monday)... Height falls ahead of an ejecting upper level low across the Southwest U.S. will allow the dry line to become more active on Wednesday, and an upstream disturbance in the southwest flow aloft should aid in convective development farther south into the southern Edwards Plataea and northern Coahuila Wednesday afternoon. Models have been very consistent with this the past several runs. How far east the convection makes it into the CWA Wednesday evening and overnight is lower confidence as there are considerable difference between the GFS and NAM12 in how much the cap erodes. Global models appear to erode the cap completely across Val Verde and portion of Edwards Counties. Should this happen forecast soundings indicate MLCAPE values of 2500-3000 J/kg and effective bulk shear values of 50+ kts. This combined with forecast hodograph profile would support semi-discrete supercells capable of producing large hail and damaging wind gusts. The SPC Day 3 Convective Outlook highlights this area in a Slight Risk. Farther east the cap does look to hold into the southern I-35 corridor overnight. However as the aforementioned disturbance lifts northeast a possible organized complex of storms could clip the northern Hill Country and Central Texas overnight and Thursday morning as cap weakens. Thursday night through Friday a cold front will sag into West Central Texas. Low level flow will back across South Central Texas with the remaining cap eroding and deep moisture pooling taking place in a broadly confluent low level flow. Precipitable water values are progged to reach 1.7-1.9" Friday into Friday night as the front moves slowly south toward the CWA. This combined with remaining upstream forcing in the base of the trough should support good chances for showers and thunderstorms over the region during this time period. Some isolated strong to marginally severe storms could take place along with pockets of locally heavy rainfall. Eventually the trough axis should pass through the region Saturday night with drier conditions Sunday and Monday. && .PRELIMINARY POINT TEMPS/POPS... Austin Camp Mabry 81 71 85 72 86 / 20 20 20 20 40 Austin Bergstrom Intl Airport 81 70 86 71 86 / 20 20 20 20 40 New Braunfels Muni Airport 82 70 86 71 86 / 20 20 20 20 30 Burnet Muni Airport 80 69 83 69 83 / 20 30 30 40 50 Del Rio Intl Airport 89 72 92 72 93 / 20 20 20 50 20 Georgetown Muni Airport 80 70 84 71 84 / 20 20 20 30 40 Hondo Muni Airport 83 71 87 71 89 / 30 30 20 20 30 San Marcos Muni Airport 82 71 85 71 87 / 20 20 20 20 30 La Grange - Fayette Regional 82 71 88 72 87 / 20 20 20 20 20 San Antonio Intl Airport 82 72 85 72 87 / 30 20 20 20 30 Stinson Muni Airport 82 72 86 73 87 / 30 20 20 20 30 && .EWX WATCHES/WARNINGS/ADVISORIES... None. && Mesoscale/Aviation...TB3 Synoptic/Grids...04
Hazardous Weather Outlook...UPDATED National Weather Service Austin/San Antonio TX 946 PM CDT Mon Apr 30 2018 TXZ171>173-183>194-202>209-217>225-228-020300- Llano-Burnet-Williamson-Val Verde-Edwards-Real-Kerr-Bandera- Gillespie-Kendall-Blanco-Hays-Travis-Bastrop-Lee-Kinney-Uvalde- Medina-Bexar-Comal-Guadalupe-Caldwell-Fayette-Maverick-Zavala- Frio-Atascosa-Wilson-Karnes-Gonzales-De Witt-Lavaca-Dimmit- 946 PM CDT Mon Apr 30 2018 This Hazardous Weather Outlook is for South-Central Texas.. .DAY ONE...Rest of Tonight. No hazardous weather conditions expected for the rest of the tonight period. .DAYS TWO THROUGH SEVEN...Tuesday through Sunday. Strong to severe storms will be possible late Wednesday afternoon and evening for Edwards Plateau and Hill Country. Thunderstorm chances will continue though Saturday night. Isolated strong to severe storms cannot be ruled out each day as well as the possibility for locally heavy rainfall. .SPOTTER INFORMATION STATEMENT... Spotter activation is not anticipated.
The national radar mosaic for the moment the first event began.
4 drought. Local standard time, as filed.
May brought beneficial rain to the northwestern part of South Central Texas where most of the region received above 75% of normal. Some locations in Val Verde and Edwards County saw more than 150% of normal. This led to the end of severe (D2) drought in Bandera, Edwards, Kerr, and Real Counties.
May brought beneficial rain to the northwestern part of South Central Texas where most of the region received above 75% of normal. Some locations in Val Verde and Edwards County saw more than 150% of normal. This led to the end of severe (D2) drought in Bandera, Edwards, Kerr, and Real Counties.
May brought beneficial rain to the northwestern part of South Central Texas where most of the region received above 75% of normal. Some locations in Val Verde and Edwards County saw more than 150% of normal. This led to the end of severe (D2) drought in Bandera, Edwards, Kerr, and Real Counties.
May brought beneficial rain to the northwestern part of South Central Texas where most of the region received above 75% of normal. Some locations in Val Verde and Edwards County saw more than 150% of normal. This led to the end of severe (D2) drought in Bandera, Edwards, Kerr, and Real Counties.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Texas in 2018Every state in 2018This day in weather historyWarnings in Texas, May 2018
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 751590, 751591, 751592, 751593.