Flash Flood Watch FLASH FLOOD WATCH - Collin County
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Updated: 21-Sep-2018 @ 2:30am  
Temperature Current Conditions Forecast / Storm Prediction
Currently Outside: Warmer 0.4°F than last hour.

74.1°F

Comfortable
High Today
74.5°F
12:00 AM
Low Today
73.6°F
1:04 AM
Yest High
91.1°F
4:00 PM
Yest Low
72.3°F
8:19 PM
Sta* High
98.9°F
2014
Sta* Low
60.2°F
2013
Avg* High
92.3°F
for Today
Avg* Low
69.0°F
for Today
* Based on this station's measurements taken since 10/2009
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Night time, Humid, Overcast Night time, Humid, Overcast
Wind from SSE Wind:  SSE
6.7

Gusting to:
7.0 mph
Current Rain Rain:
0.00 in
Chandler Burning Index: LOW Current CBI
Fire Danger:
-0.4 of 100
Overnight

Overnight: A 40 percent chance of showers and thunderstorms, mainly after 4am.  Cloudy, with a low around 74. South wind 5 to 10 mph.
Chance
T-storms
Friday

Friday: Showers and thunderstorms, mainly after 7am. Some of the storms could produce heavy rain.  High near 84. South southeast wind 5 to 10 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Heavy Rain
Friday
Night
Friday Night: Showers and possibly a thunderstorm.  Low around 70. East wind 5 to 10 mph.  Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Showers
Lo 74 °F Hi 84 °F Lo 70 °F
SPC Activity Map
Dew Point Liquid Precipitation Wind Speed Sun/Moon
Current: Increased 0.5°F since last hour. 70.3°F
Last Hour: Increased 0.5°F since last hour. 0.5°F
High 12:00 AM: 70.4°F
Low 12:48 AM: 69.8°F
Record High: 81.5°F on
Aug-17-2017
Record Low: -3.6°F on
Jan-27-2014
Wetbulb: 71.6°F
Rain Today
rain graph

Today: 0.00 in
Storm Rain: 0.13 in
Yesterday: 0.13 in
Last 7 Days: 0.94 in
Sep Rain: 5.16 in
Sep to Date
  Avg:10
1.77 in
Sep to Date
  Diff from Avg:10
Over 3.39 in for the month 3.39 in
Sep Avg: 2.58 in
Diff from Avg: Over 2.58 in for the month 2.58 in
Season:1 35.42 in
YTD
  Avg:11
29.15 in
YTD
  Diff from Avg:11
Over 6.27 in for the year 6.27 in
Last Rain
Time/Date:
Sep-20-2018
at 8:11 PM
60 rain days in 2018
10 days in September
0 days since last rain
Current: SSE  6.7 mph
1Hr Average: 5.2 mph
Wind Run: 12.06 miles
Wind Gust
Current: 7.0 mph mph
Today: 13.0 mph 1:48 AM
Month: 37.0 mph Sep-14
Year: 50.6 mph Aug-18
Record Gust: 63.3 mph
Mar-29-2017
Sunlight:
12 hrs 12 min
of Sunlight Today
graph 50.8% 49.2%
Which is
2 min 02 sec Shorter
Than Yesterday
 

Morning Crescent, 11 days, 13 hours, 30 minutes in cycle
14%
Illuminated
Humidity Barometer
Current: No Change 88%
Last Hour: No Change 0%
High 12:43 AM: 88%
Low 12:00 AM: 87%
Record High: 100%
Oct-6-2009
Record Low: 13%
Dec-11-2017
Current: Rising 0.01  inHg/hr 29.865 inHg
Last Hour: Steady
High 12:00 AM: 29.875 in.
Low 1:24 AM: 29.854 in.
Record High: 30.844 inHg
Jan-1-2018
Record Low: 29.323 inHg
Jan-21-2017
Cooling Degree Days Snow3 Heat Index Air
Today: 0.7
Sep: 273.6
2018 to Date: 2697.3
Heating Degree Days
2018 to Date: 1494.1
Today: 0.00 in
Yesterday: 0.00 in
Sep Snow: No Change 0.00 in
Sep Avg: 0.00 in
Diff from Avg: 0.00 in
Season Total:2 0.00 in
Snow Depth: 0.00 in
0 snow days in September
0 snow days this season.2
First Snow of Season:
Jan-15-2018
Average 1st Snow:
14 of Dec
Current: 74.1°F
High 12:00am: 74.5°F
Yesterday: 101.7°F
Record: 121.5°F
Aug-12-2016
Quality
Index6:

51


Moderate

Density:
1.18 kg/m3
UV Summary/Forecast Solar Summary
High Yest:   5.1 @ 1:29 PM
Sep-21

8.8
Sep-22

9.1
Sep-23

9.0
High Yest:   942.0 @ 1:16 PM
Sun Hours Today:
00:00
   This Month: 36:23 Hrs
Rise: 7:14 am  Set: 7:26 pm
Almanac Irrigation Index5 Station All Time Records Cloud Level
Currently: Night
YTD Avg Temp: 69.5°F
Sunrise: 7:14 am
Sunset: 7:26 pm
Moonrise: 5:53 pm
Moonset: 3:56 am
Full Moon: Sep-25-2018
New Moon: 03:48 UTC
Oct-9-2018
Updated at Midnight
Current ET: 0.03 in
7-Days Rain: 0.94 in
7-Days ET: 1.02 in
7-Day:  0.079 in water in deficit of what evaporated in last 7 days. 0.079 in
September:  2.55 in water in excess of what evaporated this month. 2.55 in
HIGHS: LOWS:
109.4°F
Aug-3-2011
11.8°F
Jan-17-2018
Daytime Records
  108.3°F
Aug-10-2015
  16.3°F
Feb-02-2011
Nitetime Records
  96.8°F
Aug-04-2011
  13.1°F
Feb-02-2011
ICN:1 | S3C2:1 | Ajax 3.xx
ISS:Ok | CON:4.6 | RCP:98%
1 Rain season: Jan 1st to Dec 31st.   2 Snow season July 1st to June 30th.   3 Snow manually measured usually around 7AM and 7PM.   5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week. (Negative numbers mean amount of water needed, positive numbers mean excess water is present).   6 Air Quality Index is provided by Texas Commission on Environmental Quality.   10 Historical average only to day 21 of just the month of September for this station since 2009.   11 Historical average rain this season to day 21 of September for this station since 2009.
 NWS Weather Forecast  -   Outlook Overnight & Friday
Overnight

Overnight: A 40 percent chance of showers and thunderstorms, mainly after 4am.  Cloudy, with a low around 74. South wind 5 to 10 mph.
Chance
T-storms

Lo 74 °F
NWS forecast: A 40 percent chance of showers and thunderstorms, mainly after 4am. Cloudy, with a low around 74. South wind 5 to 10 mph.
Friday

Friday: Showers and thunderstorms, mainly after 7am. Some of the storms could produce heavy rain.  High near 84. South southeast wind 5 to 10 mph.  Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Heavy Rain

Hi 84 °F
NWS forecast: Showers and thunderstorms, mainly after 7am. Some of the storms could produce heavy rain. High near 84. South southeast wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
 NWS Short Term Weather Forecast
Friday
Night
Friday Night: Showers and possibly a thunderstorm.  Low around 70. East wind 5 to 10 mph.  Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.
Showers
Saturday

Saturday: Showers likely and possibly a thunderstorm.  Cloudy, with a high near 75. North northeast wind around 5 mph.  Chance of precipitation is 70%.
Showers
Likely
Saturday
Night
Saturday Night: Showers likely and possibly a thunderstorm.  Cloudy, with a low around 67. North northeast wind 5 to 10 mph.  Chance of precipitation is 60%.
Showers
Likely
Sunday

Sunday: A 50 percent chance of showers and thunderstorms.  Cloudy, with a high near 79. East northeast wind around 5 mph.
Chance
T-storms
Sunday
Night
Sunday Night: A 30 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 69. East wind around 5 mph.
Chance
T-storms
Monday

Monday: A 30 percent chance of showers and thunderstorms.  Partly sunny, with a high near 83. Southeast wind around 5 mph.
Chance
T-storms
Monday
Night
Monday Night: A 20 percent chance of showers and thunderstorms.  Mostly cloudy, with a low around 72. Southeast wind 5 to 10 mph.
Slight Chance
T-storms
Lo 70 °F Hi 75 °F Lo 67 °F Hi 79 °F Lo 69 °F Hi 83 °F Lo 72 °F
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