Alvin, Texas Weather Conditions

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Current Conditions

  • 79°
  • Mostly Cloudy
  • Wind: South 16 mph
  • Humidity: 82%
  • Visibility: 9.0 miles
  • Dew Point: 73°
  • Pressure: 29.65 in. 0

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Next 12 Hours

2  am
5  am
8  am
11  am
2  pm
Overcast
Overcast
Chance of a Thunderstorm
Chance of T-storms
Thunderstorm
T-storms
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
77°
75°
72°
78°
82°
Forecast data from the National Digital Forecast Database.

5 Day Forecast

  • Saturday
  • Chance of a Thunderstorm
  • High: 84 °
  • Low: 70 °
  • Chance of T-Storms
  • Sunday
  • Thunderstorm
  • High: 83 °
  • Low: 70 °
  • T-Storms
  • Monday
  • Thunderstorm
  • High: 79 °
  • Low: 64 °
  • T-Storms
  • Tuesday
  • Partly Cloudy
  • High: 79 °
  • Low: 61 °
  • Partly Cloudy
  • Wednesday
  • Clear
  • High: 80 °
  • Low: 58 °
  • Clear

Forecast for Alvin, Texas

Updated: 12:28 am CDT on April 30, 2016

Coastal Flood Advisory in effect until 6 PM CDT this evening...
  • Rest of Tonight

    Cloudy. A chance of showers and thunderstorms in the evening...then showers and thunderstorms likely after midnight. Locally heavy rainfall possible after midnight. Lows in the mid 70s. South winds 10 to 15 mph with gusts to around 30 mph. Chance of rain 50 percent in the evening increasing to 70 percent after midnight.

  • Saturday

    Showers and thunderstorms likely. Highs in the lower 80s inland...around 80 coast. Southeast winds 10 to 15 mph. Chance of rain 60 percent.

  • Saturday Night

    Mostly cloudy with a 40 percent chance of showers and thunderstorms. Lows in the lower 70s. Southeast winds 10 to 15 mph.

  • Sunday

    Mostly cloudy with a 40 percent chance of showers and thunderstorms. Highs in the lower 80s inland...around 80 coast. East winds 10 to 15 mph.

  • Sunday Night

    Mostly cloudy early in the evening then becoming partly cloudy in the late evening and early morning then becoming mostly cloudy late. A chance of showers and thunderstorms in the evening...then showers and thunderstorms likely after midnight. Lows in the lower 70s. East winds 10 to 15 mph. Chance of rain 40 percent in the evening increasing to 60 percent after midnight.

  • Monday

    Mostly cloudy. Showers and thunderstorms likely in the morning...then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 60 percent in the morning decreasing to 50 percent in the afternoon.

  • Monday Night

    Showers and thunderstorms likely. Lows in the mid 60s inland...in the upper 60s coast. Chance of rain 60 percent.

  • Tuesday

    Mostly cloudy in the morning then becoming partly cloudy. A 20 percent chance of showers and thunderstorms. Highs in the upper 70s.

  • Tuesday Night

    Partly cloudy. Lows in the upper 50s inland...in the lower 60s coast.

  • Wednesday

    Mostly sunny. Highs in the upper 70s.

  • Wednesday Night

    Mostly clear. Lows in the upper 50s inland... in the lower 60s coast.

  • Thursday

    Mostly sunny. Highs in the lower 80s.

  • Thursday Night

    Mostly clear. Lows in the lower 60s inland...in the mid 60s coast.

  • Friday

    Mostly sunny. Highs in the mid 80s inland...in the lower 80s coast.

Severe Weather Alert Descriptions

 Coastal Flood Advisory, Flash Flood Watch  Statement as of 10:19 PM CDT on April 29, 2016


... Coastal Flood Advisory remains in effect until 6 PM CDT
Saturday...

* coastal flooding... minor overwash on the lowest coastal roads
primarily on the Bolivar Peninsula... Surfside and the Blue
Water Highway. Wave run up on area beaches.

* Rip currents... moderate to strong.

* Timing... mid morning through mid afternoon.

* Impacts... water and debris on low roads could impact travel.
Rip currents can lead to dangerous conditions for even
experienced swimmers... especially near structures.

Precautionary/preparedness actions...

A coastal Flood Advisory indicates that onshore winds and tides
will combine to generate flooding of low areas along the shore.





240 PM CDT Fri Apr 29 2016

... Flash Flood Watch in effect through Sunday morning...

The National Weather Service in Houston/Galveston has expanded
the

* Flash Flood Watch to include a portion of southeast Texas...
including the following Brazoria... Chambers... Galveston ... and
Liberty.

* Through Sunday morning

* unusually moist tropical air will continue to flow into the area
this afternoon and overnight. Storms will develop to the north
and west of the region this afternoon then expand into the
region overnight. The ground is saturated and any rainfall will
rapidly convert to runoff. These storms will be capable of
intense rainfall rates of 2 to 4 inches per hour. These storms
may become anchored in an east to west band with storms moving
north north colliding with the boundary and probably
intensifying rain rates. Where the boundary sets up is still
difficult to pinpoint but probably in the zone between the
Interstate 10 corridor and College Station and Huntsville.
Rainfall totals of 2 to 4 inches should be widespread over the
watch area with localized amounts of 7 to 10 inches. Street
flooding may become widespread in the watch area and travel
overnight should be reconsidered. Rivers and streams across the
watch area may quickly flood with the heavy rainfall. Stay
informed on the weather overnight.

The rains should gradually move out of the region Saturday
afternoon. More storms may form Sunday and then another system
arrives Monday and Tuesday bringing more rainfall.


* Streets... bayous... streams and rivers will likely have the
greatest impacts from the heavy rainfall. Motorists and persons
with outdoor activities should stay abreast of the latest
forecasts and have contingency plans in place when the heavy
rain arrives late this afternoon and tonight.

Precautionary/preparedness actions...

A Flash Flood Watch means that conditions may develop that lead
to flash flooding. Flash flooding is a very dangerous situation.

You should monitor later forecasts and be prepared to take action
should flash flood warnings be issued.






Personal Weather Stations

Personal Weather Stations [Add your weather station!]

Location: Alvin East - Coffeemuses, Alvin, TX

Updated: 1:57 AM CDT

Temperature: 76.1 °F Dew Point: 74 °F Humidity: 92% Wind: SE at 4.7 mph Pressure: 29.45 in Hourly Precipitation: - Heat Index: 76 °F Graphs

Location: Texas Gulf flat lands., Alvin, TX

Updated: 1:51 AM CDT

Temperature: 76.5 °F Dew Point: 73 °F Humidity: 88% Wind: SSW at 2.7 mph Pressure: 29.31 in Hourly Precipitation: - Heat Index: 77 °F Graphs

Location: Bobby Wright, Alvin, TX

Updated: 2:03 AM CDT

Temperature: 76.8 °F Dew Point: 76 °F Humidity: 96% Wind: SE at 4.2 mph Pressure: 29.56 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Stevenwood, Alvin, TX

Updated: 1:52 AM CDT

Temperature: 76.6 °F Dew Point: 74 °F Humidity: 91% Wind: WNW at 1.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Forest Heights, Alvin, TX

Updated: 2:03 AM CDT

Temperature: 75.7 °F Dew Point: 74 °F Humidity: 96% Wind: SE at 5.8 mph Pressure: 29.51 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: Algoa, Texas -ARS K5UY, ALGOA, TX

Updated: 2:03 AM CDT

Temperature: 76.7 °F Dew Point: 74 °F Humidity: 93% Wind: South at 8.0 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Heat Index: 77 °F Graphs

Location: Brazoria County/AKA, Alvin, TX

Updated: 1:11 AM CDT

Temperature: 77.0 °F Dew Point: 71 °F Humidity: 83% Wind: ESE at 7.3 mph Pressure: 29.67 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Heights Ridge, Alvin, TX

Updated: 2:02 AM CDT

Temperature: 75.9 °F Dew Point: 74 °F Humidity: 95% Wind: SSE at 4.7 mph Pressure: 29.47 in Hourly Precipitation: - Heat Index: 75 °F Graphs

Location: West Road, Alvin, TX

Updated: 2:03 AM CDT

Temperature: 75.6 °F Dew Point: 73 °F Humidity: 94% Wind: Calm Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: APRSWXNET, Friendswood, TX

Updated: 1:33 AM CDT

Temperature: 77 °F Dew Point: - Humidity: - Wind: SSW at 6 mph Pressure: 29.64 in Hourly Precipitation: 0.00 in Heat Index: 75 °F Graphs

Location: Radio WE5ST - Brazoria County, TX, Alvin, TX

Updated: 2:03 AM CDT

Temperature: 76.1 °F Dew Point: 74 °F Humidity: 94% Wind: ENE at 6.0 mph Pressure: 29.66 in Hourly Precipitation: 0.01 in Heat Index: 76 °F Graphs

Location: Sun Meadow, Friendswood, TX

Updated: 2:03 AM CDT

Temperature: 77.0 °F Dew Point: 74 °F Humidity: 91% Wind: Calm Pressure: 29.63 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Mosslights.com, League City, TX

Updated: 2:03 AM CDT

Temperature: 76.1 °F Dew Point: 74 °F Humidity: 95% Wind: Calm Pressure: 29.74 in Hourly Precipitation: 0.00 in Heat Index: 76 °F Graphs

Location: Westover Park, Castle Peak, League City, TX

Updated: 2:02 AM CDT

Temperature: 77.2 °F Dew Point: 77 °F Humidity: 99% Wind: WSW at 4.2 mph Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Mikeg Weather station on Highland Rd, Santa Fe, TX

Updated: 2:00 AM CDT

Temperature: 77.5 °F Dew Point: 76 °F Humidity: 95% Wind: South at 3.9 mph Pressure: 29.66 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: APRSWXNET, Santa Fe, TX

Updated: 1:36 AM CDT

Temperature: 77 °F Dew Point: 71 °F Humidity: 82% Wind: South at 1 mph Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Countryside South, League City, TX

Updated: 1:49 AM CDT

Temperature: 76.9 °F Dew Point: 75 °F Humidity: 92% Wind: South at 4.0 mph Pressure: 29.65 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Glenshannon, Friendswood, TX

Updated: 2:00 AM CDT

Temperature: 77.0 °F Dew Point: 74 °F Humidity: 91% Wind: SW at 3.0 mph Pressure: 29.60 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Westover Park, League City, TX

Updated: 1:54 AM CDT

Temperature: 77.0 °F Dew Point: 74 °F Humidity: 92% Wind: ESE at 4.2 mph Pressure: 29.60 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Eagle Lakes Drive, Friendswood, TX

Updated: 2:00 AM CDT

Temperature: 77.2 °F Dew Point: 75 °F Humidity: 93% Wind: North at - Pressure: 29.66 in Hourly Precipitation: - Heat Index: 79 °F Graphs

Location: Prairie Estates, Dickinson, TX

Updated: 2:00 AM CDT

Temperature: 76.9 °F Dew Point: 75 °F Humidity: 93% Wind: SW at 2.0 mph Pressure: 29.43 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Oak Creek Lane, League City, TX

Updated: 2:01 AM CDT

Temperature: 77.2 °F Dew Point: 73 °F Humidity: 88% Wind: North at - Pressure: 29.71 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Central Park, Friendswood, TX

Updated: 2:03 AM CDT

Temperature: 77.2 °F Dew Point: 74 °F Humidity: 91% Wind: WNW at 5.0 mph Pressure: 29.49 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Rustic Oaks, League City, TX

Updated: 1:55 AM CDT

Temperature: 77.0 °F Dew Point: 72 °F Humidity: 85% Wind: South at 4.2 mph Pressure: 29.43 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Friendswood Weather, Friendswood, TX

Updated: 2:03 AM CDT

Temperature: 77.0 °F Dew Point: 77 °F Humidity: 100% Wind: SSW at 6.0 mph Pressure: 29.62 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Barton Falls Court, League City, TX

Updated: 2:01 AM CDT

Temperature: 77.2 °F Dew Point: 74 °F Humidity: 89% Wind: North at - Pressure: 29.70 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Brittany Lakes, League City, TX

Updated: 1:55 AM CDT

Temperature: 77.6 °F Dew Point: 73 °F Humidity: 86% Wind: SSE at 7.0 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Heat Index: 80 °F Graphs

Location: Autumn Lakes, Friendswood, TX

Updated: 2:03 AM CDT

Temperature: 77.5 °F Dew Point: 64 °F Humidity: 63% Wind: SSW at 7.2 mph Pressure: 29.39 in Hourly Precipitation: 0.00 in Heat Index: 79 °F Graphs

Location: Gorgeous Garvin Grotto, Santa Fe, TX

Updated: 1:58 AM CDT

Temperature: 77.0 °F Dew Point: 74 °F Humidity: 91% Wind: SW at 7.3 mph Pressure: 29.52 in Hourly Precipitation: - Heat Index: 78 °F Graphs

Location: Clear Creeks Woods, Friendswood, TX

Updated: 2:03 AM CDT

Temperature: 77.0 °F Dew Point: 74 °F Humidity: 92% Wind: Calm Pressure: 29.51 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

Location: Friendswood, TX

Updated: 2:03 AM CDT

Temperature: 76.6 °F Dew Point: 71 °F Humidity: 82% Wind: SSW at 4.0 mph Pressure: 29.61 in Hourly Precipitation: 0.00 in Heat Index: 78 °F Graphs

MSN Maps of:

Temp: Dew Point: Humidity Wind Pressure Hr Precip -

NWS Forecaster Discussion




Area forecast discussion 
National Weather Service Houston/Galveston Texas 
1206 am CDT Sat Apr 30 2016 


Aviation... 
still a difficult forecast and the forecast confidence is only 
moderate for the first four hours...and low past six hours. The 
middle and high level high pressure ridge evident in water vapor over 
the far eastern counties was keeping a low-level capping inversion 
in place. However...a moisture plume was evident from Matagorda 
Bay through kcll. Storms along the dry line to the west and along 
the warm front to the north are shown by some of the models to 
build into the forecast area tonight. The rap13 and nam12 both 
push the dry line/surface boundary through the area to the coast 
on Saturday. Went with a model consensus for the forecast...even 
though the solutions were varied. 


Because of the uncertainty...tweaked mainly the first six hours. 
However...did make some bigger chances for khou to kgls Friday 
afternoon and evening 


40 


&& 


Previous discussion... /issued 843 PM CDT Friday Apr 29 2016/ 


Update... 
may have dodged the bullet with the first round across most of 
southeastern Texas as diurnal storms failed to sustain themselves with 
limited convergence/upper support and modest capping in place. 
Eyes will turn to the west as we monitor the strong/severe storms 
over central Texas along surface trough and dry line as this 
activity continues east overnight. Could still see a few showers 
ahead of this activity...but most of our rain potential tonight 
may now be tied to broken line moving into our area after 06z. 
Abundant moisture remains anchored over southeastern Texas with axis of 
1.5-2" precipitable waters  in place so potential for heavy rain remains early 
Saturday morning...although /fortunately/ overall totals may be 
less than earlier thought. Regardless will keep Flash Flood Watch 
in place given the amount of moisture/instability remaining and 
the possibility of high rainfall rates and saturated soils. 


Scenario will be complicated moving through tomorrow depending on 
effects from early morning activity. If these storms push through 
as an organized mesoscale convective system...wind damage would remain a possibility 
overnight. This could then work-over air mass enough to reduce 
thunderstorm potential in its wake for much of the day. However if this 
activity weakens and or leaves a boundary across the region...we 
could see increased thunderstorm/heavy rain potential tomorrow. 


Have updated forecast grids to account for above mentioned 
scenario...bumping back probability of precipitation/quantitative precipitation forecast a bit overnight. 


Evans 


Previous discussion... /issued 637 PM CDT Friday Apr 29 2016/ 


Aviation... 
low to moderate confidence forecast. Moisture axis from Matagorda 
Bay to kcll to Madison County should slowly move eastward through 
the night. Showers and thunderstorms were developing within the 
moist axis. Model solutions differed...however there was enough 
consensus between the GFS/nam12/rap13 to try and time the event 
tonight and Saturday. Terminals were based on the nam12 and rap13 
and the previous package. 


40 


&& 


Preliminary point temps/pops... 
College Station (cll) 72 84 69 82 66 / 90 50 40 50 50 
Houston (iah) 73 82 71 82 70 / 80 60 40 50 60 
Galveston (gls) 75 80 74 80 73 / 60 60 30 40 60 


&& 


Hgx watches/warnings/advisories... 
Texas...Flash Flood Watch through Sunday morning for the following 
zones: Austin...Brazoria...Brazos...Burleson...Chambers... 
Colorado...Fort Bend...Galveston...Grimes...Harris... 
Houston...Liberty...Madison...Montgomery...Polk...San 
Jacinto...Trinity...Walker...Waller...Washington...Wharton. 


Coastal Flood Advisory until 6 PM CDT Saturday for the following 
zones: Brazoria...Chambers...Galveston. 


GM...small craft should exercise caution until 6 am CDT Saturday for 
the following zones: Galveston Bay...Matagorda Bay...waters 
from Freeport to the Matagorda Ship Channel out 20 nm... 
waters from High Island to Freeport out 20 nm. 


Small Craft Advisory until 6 am CDT Saturday for the following 
zones: waters from Freeport to the Matagorda Ship Channel 
20 nm to 60 nm...waters from High Island to Freeport 20 to 
60 nm. 


&& 


$$ 


Discussion...48 
aviation/marine...40 






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