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Johnson City, Tennessee 7 Day Weather Forecast
Wx Forecast - Wx Discussion - Wx Aviation
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NWS Forecast for 2 Miles ENE Mountain Home TN
National Weather Service Forecast for:
2 Miles ENE Mountain Home TN
Issued by: National Weather Service Morristown, TN |
| Updated: 1:30 am EDT Jul 9, 2025 |
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Today
Slight Chance
T-storms then
T-storms
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Tonight
T-storms then
Slight Chance
T-storms
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Thursday
Chance
T-storms then
T-storms
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Thursday
Night
T-storms then
Chance
Showers
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Friday
Slight Chance
T-storms then
Showers
Likely
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Friday
Night
Showers
Likely then
Slight Chance
T-storms
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Saturday
Slight Chance
T-storms then
Chance
T-storms
|
Saturday
Night
Chance
T-storms
|
Sunday
Slight Chance
T-storms then
Showers
Likely
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| Hi 90 °F |
Lo 68 °F |
Hi 85 °F |
Lo 67 °F |
Hi 88 °F |
Lo 67 °F |
Hi 89 °F |
Lo 69 °F |
Hi 89 °F |
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Hazardous Weather Outlook
Today
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Showers and thunderstorms likely before 4pm, then showers and possibly a thunderstorm between 4pm and 5pm, then showers and thunderstorms likely after 5pm. High near 90. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Tonight
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Showers and thunderstorms before 5am, then a slight chance of showers. Low around 68. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible. |
Thursday
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A chance of showers and thunderstorms between 8am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 85. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms. |
Thursday Night
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Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 67. Calm wind. Chance of precipitation is 80%. |
Friday
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A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Mostly sunny, with a high near 88. Calm wind becoming west around 5 mph in the afternoon. Chance of precipitation is 60%. |
Friday Night
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Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 67. Calm wind. Chance of precipitation is 60%. |
Saturday
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A 50 percent chance of showers and thunderstorms, mainly after 2pm. Mostly sunny, with a high near 89. Calm wind becoming west around 5 mph in the afternoon. |
Saturday Night
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A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 30%. |
Sunday
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A slight chance of showers before 8am, then a slight chance of showers and thunderstorms between 8am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 60%. |
Sunday Night
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Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 68. Chance of precipitation is 60%. |
Monday
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A 40 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 90. |
Monday Night
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A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67. |
Tuesday
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A 50 percent chance of showers and thunderstorms. Sunny and hot, with a high near 91. |
Forecast from NOAA-NWS
for 2 Miles ENE Mountain Home TN.
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Weather Forecast Discussion
814
FXUS64 KMRX 090549
AFDMRX
Area Forecast Discussion
National Weather Service Morristown TN
149 AM EDT Wed Jul 9 2025
...New SHORT TERM, LONG TERM, AVIATION...
.SHORT TERM AND LONG TERM...
(Today through Next Tuesday)
Issued at 128 AM EDT Wed Jul 9 2025
Key Messages:
1. Strong to isolated severe storms are possible this afternoon
and evening. Primary threats will be damaging wind gusts with
torrential downpours that could lead to localized flash flooding.
2. Daily chances of afternoon showers and storms will continue
across the area into next week.
3. Near normal temperatures with muggy conditions are expected for
the remainder of the work week. A slight warming trend is expected
through the weekend into next week.
Discussion:
Similar to last night, mostly dry conditions are expected overnight
with some fog development particularly in and near river valley
locations. An upper trough shifting eastward into the Ohio Valley
this afternoon will enhance effective bulk shear to around 20kts,
allowing for increased coverage of afternoon convection relative to
previous days. Though weak, the shear will be efficient enough to
allow some updraft/downdraft separation and promote taller storms
alongside 2000-2500 J/kg MLCAPE. Precipitation loading could lead to
a few strong to isolated severe storms capable of producing
damaging wind gusts and flash flooding.
The band of enhanced mid-level flow will shift east of the area by
Thursday. Diurnal chances of showers and storms continue with the
trough axis on the eastern periphery of the forecast area. However,
slightly less favorable MLCAPE per latest NAM/HRRR model derived
soundings(1500-2000J/kg) and and EBWD less than 20kts suggest
limited potential for strong to severe activity - more so general
summertime convection. This pattern is expected to persist largely
through the entirety of the forecast period. Exact coverage or
potential for strong to severe storms will be partially dependent on
the timing and magnitude of any weak impulses traversing mean flow
aloft. Though, with continued days of afternoon convection and PWAT
between the 75th and 90th percentile based off SPC sounding
climatology from KBNA, isolated flooding concerns will be monitored
as we go through the week and into the weekend. For now, WPC
excessive rainfall outlooks highlight much of the area in marginal
risks through the first half of the weekend.
The end of the week will see a slight cooling trend due to more
persistent cloud cover and minor upper-level height falls. It will
still feel plenty muggy with dewpoints remaining in the low 70s.
Ambient temperatures will begin a slow upward trend during the
weekend and into early next week.
&&
.AVIATION...
(06Z TAFS)
Issued at 128 AM EDT Wed Jul 9 2025
Predominant VFR conditions are expected through the TAF period.
Have matched TRI visibility forecast with previous nights as this
evenings convection just managed to squeeze north of the terminal.
Still potential some brief reduction in vis category occurs but
overall confidence is low. Additional scattered afternoon
convection is expected across the region tomorrow afternoon.
Latest hi-resolution guidance starts to initiate activity
generally around or just shortly after noon eastern. Frequent
lighting, gusty winds, and heavy downpours possible with strongest
activity.
&&
.PRELIMINARY POINT TEMPS/POPS...
Chattanooga Airport, TN 93 72 89 71 / 70 40 80 40
Knoxville McGhee Tyson Airport, TN 92 72 88 71 / 70 50 80 40
Oak Ridge, TN 90 70 88 70 / 70 50 80 30
Tri Cities Airport, TN 88 68 85 67 / 70 60 80 50
&&
.MRX WATCHES/WARNINGS/ADVISORIES...
NC...NONE.
TN...NONE.
VA...NONE.
&&
$$
SHORT TERM...KRS
LONG TERM....KRS
AVIATION...KRS
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