SPC Feb 4, 2023 1630 UTC Day 1 Convective Outlook

SPC Feb 4, 2023 1630 UTC Day 1 Convective Outlook

SPC 1630Z Day 1 Outlook
Day 1 Outlook Image
Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
1022 AM CST Sat Feb 04 2023

Valid 041630Z - 051200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected through tonight.

...Northern CA...
A shortwave impulse embedded within a broader northeast Pacific
upper trough will impinge on the northern half of the CA coast
tonight. The warm conveyor region ahead of this wave will yield an
eastward-moving precipitation band crossing the coast this evening
and into the Sierras tonight. Scant elevated buoyancy may develop
within the upslope flow regime along the western Sierras and support
very isolated thunderstorms. Otherwise, cooling mid-level
temperatures and steepening lapse rates will foster scant
surface-based instability along the northern CA coast in the early
morning. Isolated thunderstorms will be possible; embedded within
scattered, post-frontal low-topped convection. 

...Southeast FL...
Very poor mid-level lapse rates of 4-5 C/km sampled in 12Z observed
soundings will curtail thunderstorm potential today. Low-level flow
will shift from east-northeasterlies to southeasterlies tonight and
result in gradual moistening. This should support scattered
low-topped showers overnight with perhaps a thunderstorm or two in
the early morning.

..Grams/Lyons.. 02/04/2023

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SPC Day 1 Fire Weather Outlook

SPC Day 1 Fire Weather Outlook

SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook Image
Day 1 Fire Weather Outlook  
NWS Storm Prediction Center Norman OK
0931 AM CST Sat Feb 04 2023

Valid 041700Z - 051200Z

...NO CRITICAL AREAS...

The previous forecast (see below) remains on track, with no changes
or additions made.

..Squitieri.. 02/04/2023

.PREV DISCUSSION... /ISSUED 0159 AM CST Sat Feb 04 2023/

...Synopsis...
A low-amplitude shortwave trough will track eastward from the
central/southern Plains into the middle MS Valley, while a weak cold
front moves southward across the southern High Plains. Modest
downslope warming/drying and breezy surface winds in the vicinity of
the front could yield locally elevated conditions over portions of
the southern High Plains during the afternoon. However, the stronger
surface winds will generally be displaced east of the more
substantial RH reductions -- precluding Elevated highlights.

...Please see www.spc.noaa.gov/fire for graphic product...

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SPC Feb 4, 2023 1630 UTC Day 1 Convective Outlook

SPC Feb 4, 2023 1300 UTC Day 1 Convective Outlook

SPC 1300Z Day 1 Outlook
Day 1 Outlook Image
Day 1 Convective Outlook  
NWS Storm Prediction Center Norman OK
0643 AM CST Sat Feb 04 2023

Valid 041300Z - 051200Z

...NO SEVERE THUNDERSTORM AREAS FORECAST...

...SUMMARY...
Severe thunderstorms are not expected today.

...South Florida...
Weak height rises will occur today as low-level easterlies will tend
to maintain a semi-moist air mass across the region with scattered
convection for much of the period. The proximity of the
stalled/slow-moving surface front, and aforementioned
semi-moist/weakly unstable air mass, may allow for isolated
thunderstorms near the coastal southeast Florida Peninsula, Keys,
and Florida Straits. Robust thunderstorms are unlikely given
thermodynamic profiles characterized by weak lapse rates/buoyancy.

...Northern California...
An eastward-progressive shortwave trough will reach coastal portions
of northern California and Oregon late tonight. Increasing moisture
and steepening mid-level lapse rates will support some potential for
isolated thunderstorms near/behind the inland-moving frontal band.
These thunderstorms will be possible initially near coastal
areas/offshore waters as early as this evening, and potentially
across interior northern California/Sierras late tonight and early
Sunday. Severe thunderstorms are unlikely given weak overall
buoyancy and residual cool boundary layer air.

..Guyer/Leitman.. 02/04/2023

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Severe Thunderstorm Warning

Severe Thunderstorm Warning

This is an automatic message WUUS52 KGSP 150312
SVRGSP
NCC045-071-109-SCC021-091-150400-
/O.NEW.KGSP.SV.W.0024.190415T0312Z-190415T0400Z/

BULLETIN – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
1112 PM EDT Sun Apr 14 2019

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for…
Eastern Lincoln County in the Piedmont of North Carolina…
Southeastern Cleveland County in the Piedmont of North Carolina…
Gaston County in the Piedmont of North Carolina…
Northwestern York County in Upstate South Carolina…
Northeastern Cherokee County in Upstate South Carolina…

* Until midnight EDT.

* At 1112 PM EDT, severe thunderstorms were located along a line
extending from near Shelby to 19 miles west of Gastonia to 6 miles
east of Gaffney, moving east at 35 mph.

HAZARD…60 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Expect damage to trees and power lines.

* Locations impacted include…
Gastonia, Shelby, Kings Mountain, Mt Holly, Belmont, Cherryville,
Bessemer City, South Gastonia, Clover and Dallas.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.

These storms are also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.

&&

A Tornado Watch remains in effect until 500 AM EDT for the Piedmont
of North Carolina…and Upstate South Carolina.

LAT…LON 3535 8097 3530 8100 3527 8102 3517 8100
3515 8101 3514 8105 3510 8103 3509 8106
3495 8165 3515 8157 3530 8163 3555 8106
3555 8096 3550 8096 3549 8095 3545 8094
3543 8096 3539 8095 3537 8099 3536 8092
TIME…MOT…LOC 0312Z 248DEG 32KT 3526 8153 3518 8150 3504 8155

TORNADO…POSSIBLE
HAIL…<.75IN WIND...60MPH $$ HG

Severe Thunderstorm Warning

Severe Thunderstorm Warning

This is an automatic message WUUS52 KGSP 150215
SVRGSP
SCC045-059-083-150300-
/O.NEW.KGSP.SV.W.0022.190415T0215Z-190415T0300Z/

BULLETIN – IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Greenville-Spartanburg SC
1015 PM EDT Sun Apr 14 2019

The National Weather Service in Greenville-Spartanburg has issued a

* Severe Thunderstorm Warning for…
Northwestern Laurens County in Upstate South Carolina…
East central Greenville County in Upstate South Carolina…
Central Spartanburg County in Upstate South Carolina…

* Until 1100 PM EDT.

* At 1015 PM EDT, a severe thunderstorm was located 14 miles
southeast of Greenville Downtown, or 4 miles southeast of Five
Forks, moving east at 40 mph.

HAZARD…60 mph wind gusts.

SOURCE…Radar indicated.

IMPACT…Expect damage to trees and power lines.

* Locations impacted include…
Spartanburg, Simpsonville, Five Forks, Fountain Inn, Woodruff,
Pacolet, Cowpens, Roebuck, Pacolet Mills and Reidville.

PRECAUTIONARY/PREPAREDNESS ACTIONS…

Scattered trees and power lines will be blown down in the warned
area. Seek shelter inside an interior room.

This storm is also producing extremely heavy rainfall. Flooding of
drainage ditches and low lying areas may occur. Small streams will
rise rapidly. Do not drive through areas where water is flowing over
the road.

Please report damaging winds, hail, or flooding to the National
Weather Service Greenville-Spartanburg by calling toll free, 1, 800,
2 6 7, 8 1 0 1, or by posting on our Facebook page, or Tweet it using
hashtag nwsgsp. Your message should describe the event and the
specific location where it occurred.

&&

A Tornado Watch remains in effect until 500 AM EDT for Upstate South
Carolina.

LAT…LON 3463 8224 3482 8228 3503 8180 3499 8177
3493 8176 3493 8174 3491 8172 3483 8179
3461 8185
TIME…MOT…LOC 0215Z 250DEG 35KT 3476 8216

TORNADO…POSSIBLE
HAIL…<.75IN WIND...60MPH $$ HG