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2 years 5 months ago
WW 0131 Status Updates
STATUS REPORT ON WW 131
THE SEVERE WEATHER THREAT CONTINUES ACROSS THE ENTIRE WATCH AREA.
..SPC..04/06/23
ATTN...WFO...LWX...PHI...AKQ...RNK...
STATUS REPORT FOR WS 131
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
DEC001-003-005-062240-
DE
. DELAWARE COUNTIES INCLUDED ARE
KENT NEW CASTLE SUSSEX
DCC001-062240-
DC
. DISTRICT OF COLUMBIA COUNTIES INCLUDED ARE
DISTRICT OF COLUMBIA
MDC003-005-009-011-015-017-019-025-027-029-031-033-035-037-039-
041-045-047-510-062240-
MD
. MARYLAND COUNTIES INCLUDED ARE
ANNE ARUNDEL BALTIMORE CALVERT
CAROLINE CECIL CHARLES
DORCHESTER HARFORD HOWARD
KENT MONTGOMERY PRINCE GEORGES
Read more
2 years 5 months ago
WW 131 SEVERE TSTM DC DE MD NC NJ VA CW 061855Z - 070200Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 131
NWS Storm Prediction Center Norman OK
255 PM EDT Thu Apr 6 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
District Of Columbia
Delaware
Eastern Maryland
Northern North Carolina
Southern New Jersey
Central and Eastern Virginia
Coastal Waters
* Effective this Thursday afternoon and evening from 255 PM until
1000 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Thunderstorms will continue to intensify along the Blue
Ridge over central VA, with storms moving eastward across the watch
area through the afternoon. The strongest cells will pose a risk of
damaging wind gusts and hail.
The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 25 miles northwest of
Atlantic City NJ to 30 miles east of Danville VA. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
26025.
...Hart
Read more
2 years 5 months ago
MD 0496 CONCERNING SEVERE THUNDERSTORM WATCH 131... FOR PORTIONS OF VIRGINIA INTO EASTERN MARYLAND AND DELAWARE
Mesoscale Discussion 0496
NWS Storm Prediction Center Norman OK
0344 PM CDT Thu Apr 06 2023
Areas affected...portions of Virginia into eastern Maryland and
Delaware
Concerning...Severe Thunderstorm Watch 131...
Valid 062044Z - 062215Z
The severe weather threat for Severe Thunderstorm Watch 131
continues.
SUMMARY...The risk for hail and damaging winds continues this
afternoon across WW131.
DISCUSSION...Over the last couple of hours, several supercells have
formed and matured along across southwestern portions of WW131 in
southern VA. recent radar analysis and local storm reports show
several of the stronger cores within these supercells have recently
produced, or are capable of producing severe hail. The downstream,
environment across eastern VA into DelMarVA remains favorable for
these storms to continue, with around 1000 J/kg of MLCAPE and 35-50
kt of effective shear. Thus far, storms have remained relatively
discrete favoring a greater hail threat. Recent radar and satellite
trends suggest additional storms may form and cluster, potentially
favoring a greater damaging wind threat with time. Storms should
gradually shift east/northeastward with an increasing severe risk
across portions of DelMarVa through the remainder of the afternoon
and into the evening.
..Lyons.. 04/06/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...PHI...AKQ...LWX...RNK...
LAT...LON 37068049 38027907 38437862 39047781 39477694 39617648
39597613 39437583 39197553 38897521 38457498 37227585
36967679 36677801 36657909 36697983 36738044 37068049
Read more
2 years 5 months ago
SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0258 PM CDT Thu Apr 06 2023
Valid 062000Z - 071200Z
...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE MID-ATLANTIC...
...SUMMARY...
Scattered damaging thunderstorm gusts and isolated large hail remain
possible over parts of the Mid-Atlantic this afternoon and evening.
...20Z Update...
Generally minor changes have been made to the ongoing forecast.
Convection is gradually increasing in coverage and intensity this
afternoon across western NC and southwest/south-central VA. Current
expectations are for additional thunderstorms to develop along or
ahead a southward-moving cold front across parts of central/northern
VA into MD/DE and southern NJ. Low-level moisture remains greatest
along/east of the Blue Ridge, where diurnal heating has also been
maximized with generally less cloud cover compared to locations
farther north/west.
Even though low-level flow remains modest per recent VWPs from area
radars, winds do gradually strengthen with height through mid
levels. This is fostering around 35-50 kt of deep-layer shear, with
stronger shear present with northward extent across the
Mid-Atlantic. A mix of supercells and small bowing clusters, capable
of producing both large hail and damaging winds, should occur
through the rest of the afternoon and into this evening as
convection gradually spreads eastward.
No changes have been made to the Marginal Risk across parts of
coastal/south TX into southern LA and MS. Isolated hail and
strong/gusty winds remain possible with the stronger cores that can
develop and be sustained across this region.
..Gleason.. 04/06/2023
.PREV DISCUSSION... /ISSUED 1113 AM CDT Thu Apr 06 2023/
...Mid Atlantic Region...
Latest surface analysis shows a cold front sagging southward across
PA/WV. This boundary will move into a warm/moist air mass by early
afternoon over the Mid Atlantic region, where dewpoints the 60s and
strong heating is present. A consensus of model guidance shows
scattered thunderstorms developing along/ahead of the front. This
area lies along the southern fringe of stronger westerlies aloft,
and in corridor of forecast afternoon MLCAPE values around 1500
J/kg. Parameters are sufficient to promote a risk of severe storms
capable of damaging winds and hail. Storms should be most active in
the 21-03z period.
...TX/LA/MS...
A surface front stretches from off the TX coast into southern LA/MS.
Ample moisture and some daytime heating along/south of the boundary
will result in scattered thunderstorms throughout the day. By mid
afternoon, sufficient diurnal heating may result in a few robust
storms capable of gusty winds or hail. This activity is likely to
remain rather disorganized.
Read more
2 years 5 months ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0204 PM CDT Thu Apr 06 2023
Valid 071200Z - 081200Z
...CRITICAL FIRE WEATHER AREA FOR EASTERN COLORADO...NORTHWESTERN
KANSAS...AND SOUTHWEST NEBRASKA...
Model guidance this morning has come in stronger with the wind
across the Plains tomorrow with a broad region of 20 to 25 mph
sustained winds likely from eastern Kansas into southwest Nebraska.
This will overlap a region of 13 to 18 percent relative humidity and
dry fuels. A Critical area was added to address this concern.
Elevated fire weather conditions are likely across portions of the
Northeast and Mid-Atlantic tomorrow. Dry and breezy offshore flow is
expected across the region with sustained winds around 15 mph and
relative humidity of 20 to 35 percent. Temperatures will be cool
(45-55F), but the region has been dry and fuels are still pre
greenup. Therefore, some increase in initial attack is possible,
warranting an Elevated delineation.
..Bentley.. 04/06/2023
.PREV DISCUSSION... /ISSUED 1219 AM CDT Thu Apr 06 2023/
...Synopsis...
Weak mid-level troughing across the Rockies will lead to lee cyclone
development and windy/dry conditions across the High Plains on
Friday. Elevated fire weather conditions will be possible across
eastern Colorado into the Oklahoma and Texas Panhandles northward
into western Kansas. Afternoon relative humidity reductions to
around 15-20 percent will be possible, with sustained winds 15-20
mph. Areas of terrain-driven Critical fire weather conditions will
be possible across eastern Colorado. The localized nature of these
conditions precludes the need for a Critical area with this outlook.
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
2 years 5 months ago
SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook
NWS Storm Prediction Center Norman OK
1225 PM CDT Thu Apr 06 2023
Valid 071200Z - 081200Z
...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF
THE CENTRAL GULF COAST STATES...
...SUMMARY...
Isolated strong to severe thunderstorms may occur Friday across
parts of the central Gulf Coast states. Occasional damaging winds
and marginally severe hail appear possible.
...Synopsis...
An upper trough over the Northeast and eastern Canada will move
eastward on Friday, while upstream upper ridging shifts from the
western CONUS to the northern/central Plains. Another upper trough
should advance across parts of the Northwest. Cold-mid level
temperatures, related weak instability, and ascent associated with
this feature may support isolated lightning flashes with convection
that develops Friday afternoon across parts of eastern WA/OR,
western ID, and perhaps northern NV.
...Central Gulf Coast...
A broad area of surface high pressure centered over the Great Lakes
Friday morning should gradually shift eastward through the day. Rich
low-level moisture will remain confined to parts of the Southeast,
along/south of a cold front which is forecast to slowly sag
southward through the period. Most guidance indicates that a weak
mid-level perturbation will develop northeastward from
coastal/southeast TX across the central Gulf Coast states through
Friday evening.
Even though low-level winds are expected to remain weak, enough
mid/upper-level flow should be present to support around 30-40 kt of
deep-layer shear. With daytime heating, 500-1250 J/kg of MLCAPE
should develop across parts of southeastern LA into coastal/southern
MS/AL and the western FL Panhandle. The adequate effective bulk
shear, in combination with sufficient instability, may support
loosely organized convection across these areas. Occasional damaging
winds and perhaps marginally severe hail may occur with the
strongest cores that can develop. But, poor mid-level lapse rates
and the lack of a stronger mid-level wave should keep the overall
severe threat fairly isolated/marginal.
...Georgia...
Enough low-level convergence along the southward-moving cold front
may exist to foster isolated thunderstorms across parts of central
GA and vicinity Friday afternoon. Although sufficient instability
and deep-layer shear may be present along/south of the front for
somewhat organized convection, it appears that any thunderstorms
that do develop will quickly be undercut by the front and
subsequently weaken. While a stronger thunderstorm or two with gusty
winds appears possible, have opted to not include low severe
probabilities for wind at this time.
..Gleason.. 04/06/2023
Read more
2 years 5 months ago
SPC Day 1 Fire Weather Outlook
Day 1 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
1155 AM CDT Thu Apr 06 2023
Valid 061700Z - 071200Z
No changes. See previous discussion below.
..Bentley.. 04/06/2023
.PREV DISCUSSION... /ISSUED 1218 AM CDT Thu Apr 06 2023/
...Synopsis...
As high pressure builds across the central US, easterly gradients
will increase across far western Texas and eastern New Mexico. Weak
moisture return will occur into eastern Texas, limiting the eastern
extent of the threat. Further west, very dry conditions will
continue with relative humidity reductions to around 15-20 percent
and winds around 15 mph. HREF ensemble forecasts show the highest
probability of overlap in windy/dry conditions from Trans-Pecos to
the Permian Basin south to the Stockton Plateau. Elevated fire
weather conditions are expected within these regions. The current
Elevated area was maintained with no changes with this outlook.
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
2 years 5 months ago
WW 0130 Status Updates
STATUS REPORT ON WW 130
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 5 E MLU TO
35 S GLH TO 30 NE GWO.
..SQUITIERI..04/05/23
ATTN...WFO...JAN...
STATUS REPORT FOR WS 130
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
LAC025-029-041-065-083-107-052240-
LA
. LOUISIANA PARISHES INCLUDED ARE
CATAHOULA CONCORDIA FRANKLIN
MADISON RICHLAND TENSAS
MSC001-007-015-019-021-025-029-043-049-051-053-055-063-079-087-
089-097-105-121-125-149-155-159-163-052240-
MS
. MISSISSIPPI COUNTIES INCLUDED ARE
ADAMS ATTALA CARROLL
CHOCTAW CLAIBORNE CLAY
COPIAH GRENADA HINDS
HOLMES HUMPHREYS ISSAQUENA
JEFFERSON LEAKE LOWNDES
MADISON MONTGOMERY OKTIBBEHA
RANKIN SHARKEY WARREN
WEBSTER WINSTON YAZOO
Read more
2 years 5 months ago
WW 130 SEVERE TSTM LA MS 051935Z - 060300Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 130
NWS Storm Prediction Center Norman OK
235 PM CDT Wed Apr 5 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northeast Louisiana
Central Mississippi
* Effective this Wednesday afternoon and evening from 235 PM
until 1000 PM CDT.
* Primary threats include...
Scattered large hail and isolated very large hail events to 2
inches in diameter possible
Scattered damaging wind gusts to 70 mph possible
SUMMARY...Thunderstorms will intensify this afternoon across the
watch area, posing a risk of large hail and locally damaging wind
gusts.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 15 miles west southwest
of Natchez MS to 30 miles east northeast of Greenwood MS. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU0).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 126...WW 127...WW
128...WW 129...
AVIATION...A few severe thunderstorms with hail surface and aloft to
2 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
23030.
...Hart
Read more
2 years 5 months ago
WW 0129 Status Updates
STATUS REPORT ON WW 129
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 35 NE GWO TO
45 SSE MKL TO 15 SE CKV TO 45 N BWG TO 25 W SDF.
..SQUITIERI..04/05/23
ATTN...WFO...HUN...LMK...MEG...OHX...
STATUS REPORT FOR WS 129
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
ALC033-059-077-083-052140-
AL
. ALABAMA COUNTIES INCLUDED ARE
COLBERT FRANKLIN LAUDERDALE
LIMESTONE
KYC001-003-005-009-017-021-031-045-049-053-057-061-067-073-079-
085-087-097-099-113-123-137-141-151-155-167-169-171-179-181-207-
209-213-217-227-229-239-052140-
KY
. KENTUCKY COUNTIES INCLUDED ARE
ADAIR ALLEN ANDERSON
BARREN BOURBON BOYLE
BUTLER CASEY CLARK
CLINTON CUMBERLAND EDMONSON
FAYETTE FRANKLIN GARRARD
GRAYSON GREEN HARRISON
HART JESSAMINE LARUE
LINCOLN LOGAN MADISON
MARION MERCER METCALFE
Read more
2 years 5 months ago
WW 129 SEVERE TSTM AL KY MS TN 051840Z - 060200Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 129
NWS Storm Prediction Center Norman OK
140 PM CDT Wed Apr 5 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northwest Alabama
Central Kentucky
Northern Mississippi
Middle Tennessee
* Effective this Wednesday afternoon and evening from 140 PM
until 900 PM CDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Scattered large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY...A line of scattered thunderstorms continues to track
eastward into western Kentucky/Tennessee and northern Mississippi.
These storms will remain capable of locally damaging wind gusts and
perhaps a tornado or two through the afternoon.
The severe thunderstorm watch area is approximately along and 70
statute miles east and west of a line from 20 miles north northwest
of Lexington KY to 40 miles south southeast of Oxford MS. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU9).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 125...WW 126...WW
127...WW 128...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
24030.
...Hart
Read more
2 years 5 months ago
WW 0128 Status Updates
STATUS REPORT ON WW 128
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 SSE DAY
TO 30 WSW CMH TO 60 N CLE.
..SQUITIERI..04/05/23
ATTN...WFO...ILN...CLE...PBZ...RLX...
STATUS REPORT FOR WS 128
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
KYC023-135-161-191-201-052140-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BRACKEN LEWIS MASON
PENDLETON ROBERTSON
OHC001-005-007-015-019-025-027-029-031-035-041-045-047-049-055-
057-071-073-075-079-083-085-089-093-097-099-103-117-119-127-129-
131-133-139-141-145-151-153-155-157-163-169-052140-
OH
. OHIO COUNTIES INCLUDED ARE
ADAMS ASHLAND ASHTABULA
BROWN CARROLL CLERMONT
CLINTON COLUMBIANA COSHOCTON
CUYAHOGA DELAWARE FAIRFIELD
FAYETTE FRANKLIN GEAUGA
GREENE HIGHLAND HOCKING
HOLMES JACKSON KNOX
LAKE LICKING LORAIN
MADISON MAHONING MEDINA
Read more
2 years 5 months ago
WW 128 SEVERE TSTM KY OH PA LE 051805Z - 060000Z
URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 128
NWS Storm Prediction Center Norman OK
205 PM EDT Wed Apr 5 2023
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
Northeast Kentucky
Much of Ohio
Northwest Pennsylvania
Lake Erie
* Effective this Wednesday afternoon and evening from 205 PM
until 800 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph likely
Isolated large hail events to 1.5 inches in diameter possible
A tornado or two possible
SUMMARY...Thunderstorms over eastern Indiana and northwest Ohio will
track quickly eastward across the watch area this afternoon.
Damaging winds are the main threat along the leading edge of these
storms. An isolated tornado or two may occur.
The severe thunderstorm watch area is approximately along and 60
statute miles east and west of a line from 55 miles north northeast
of Cleveland OH to 55 miles southeast of Cincinnati OH. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU8).
PRECAUTIONARY/PREPAREDNESS ACTIONS...
REMEMBER...A Severe Thunderstorm Watch means conditions are
favorable for severe thunderstorms in and close to the watch area.
Persons in these areas should be on the lookout for threatening
weather conditions and listen for later statements and possible
warnings. Severe thunderstorms can and occasionally do produce
tornadoes.
&&
OTHER WATCH INFORMATION...CONTINUE...WW 125...WW 126...WW 127...
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector
26035.
...Hart
Read more
2 years 5 months ago
MD 0490 CONCERNING SEVERE POTENTIAL...WATCH UNLIKELY FOR PORTIONS OF WESTERN AND NORTHERN AL INTO EAST-CENTRAL MS
Mesoscale Discussion 0490
NWS Storm Prediction Center Norman OK
0348 PM CDT Wed Apr 05 2023
Areas affected...portions of western and northern AL into
east-central MS
Concerning...Severe potential...Watch unlikely
Valid 052048Z - 052215Z
Probability of Watch Issuance...20 percent
SUMMARY...Severe potential is expected to diminish with eastward
extent into parts of northern/western Alabama and east-central
Mississippi. However, locally gusty winds and small hail may
accompany strong cells through this evening. A watch is not expected
at this time.
DISCUSSION...Strong to severe thunderstorms along an
eastward-advancing cold front are ongoing from Middle Tennessee into
central Mississippi late this afternoon. This activity will continue
to shift northeast through the evening into parts of
northern/central AL and east-central MS. Instability and shear
across the downstream environment begins to wane across AL despite a
warm and moist boundary-layer. An isolated strong storm or two could
persist before weakening, producing locally strong gusts or small
hail. Overall severe potential appears low at this time. A watch
downstream from WW 129 and 130 is not expected, but trends will be
monitored.
..Leitman/Hart.. 04/05/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...BMX...HUN...MEG...JAN...
LAT...LON 34948638 34608619 34198639 33878656 33398700 32838762
32448834 32358876 32548912 32808916 33388863 33468862
34248794 34778693 34948638
Read more
2 years 5 months ago
SPC Day 2 Fire Weather Outlook
Day 2 Fire Weather Outlook
NWS Storm Prediction Center Norman OK
0313 PM CDT Wed Apr 05 2023
Valid 061200Z - 071200Z
...Corrected to include previous discussion...
No changes. See previous discussion below.
.PREV DISCUSSION... /ISSUED 0137 AM CDT Wed Apr 05 2023/
As surface high pressure builds in across the Central Plains on
Thursday, easterly gradients will increase around the periphery of
the high across far western Texas and New Mexico. Given relatively
weak northeasterly flow along the Texas coast, some moisture return
into Texas is expected, which will limit the eastern extent of this
threat. Elevated fire weather conditions will be possible from
Trans-Pecos to the Permian Basin south to the Stockton Plateau in
Texas and into portions of eastern New Mexico. In these regions,
relative humidity reductions to 15-20 percent and winds sustained
around 15 mph will be possible, with ERCs around the 70-80th
percentile. Combination of fuels and wind dry conditions support the
inclusion of an Elevated delineation.
..Bentley.. 04/05/2023
.PREV DISCUSSION... /ISSUED 0255 PM CDT Wed Apr 05 2023/
...Synopsis...
No changes. See previous discussion below.
...Please see www.spc.noaa.gov/fire for graphic product...
Read more
2 years 5 months ago
MD 0489 CONCERNING TORNADO WATCH 126...127...129... FOR PORTIONS OF SOUTHERN IN AND WESTERN/NORTHERN KENTUCKY
Mesoscale Discussion 0489
NWS Storm Prediction Center Norman OK
0305 PM CDT Wed Apr 05 2023
Areas affected...portions of southern IN and western/Northern
Kentucky
Concerning...Tornado Watch 126...127...129...
Valid 052005Z - 052130Z
The severe weather threat for Tornado Watch 126, 127, 129 continues.
SUMMARY...Damaging gusts and isolated QLCS tornadoes will remain
possible this afternoon across portions southern IN and northern KY.
DISCUSSION...As of 2000 UTC, regional radar analysis showed a
well-developed QLCS located near the Ohio River across portions of
southern IN and northwestern KY. Several bowing segments within the
QLCS have recently produced measured severe gusts at Evansville, IN
and Henderson, KY. Area VAD/VWPs show relatively elongated low-level
hodographs with 0-3 km shear orthogonal to the line at around 35-40
kt. Despite strong veering of surface winds, the strong low-level
shear remains supportive of damaging wind gusts and QLCS tornadoes.
Surface analysis and observational trends suggest this QLCS segment
will remain within the favorable environment for the next 1-2 hours
as it tracks east northeast toward the Louisville metro area.
..Lyons.. 04/05/2023
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...ILN...LMK...IND...PAH...
LAT...LON 36988533 36728756 36768782 38458715 38638683 38938541
38868504 38608490 38328487 37888490 37558504 36988533
Read more
2 years 5 months ago
WW 0127 Status Updates
STATUS REPORT ON WW 127
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 15 NW OWB TO
40 SSW BMG TO 5 ENE DAY.
..SQUITIERI..04/05/23
ATTN...WFO...IND...LMK...ILN...
STATUS REPORT FOR WT 127
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC019-025-029-037-043-061-077-115-117-123-137-143-155-175-
052140-
IN
. INDIANA COUNTIES INCLUDED ARE
CLARK CRAWFORD DEARBORN
DUBOIS FLOYD HARRISON
JEFFERSON OHIO ORANGE
PERRY RIPLEY SCOTT
SWITZERLAND WASHINGTON
KYC015-027-029-037-041-077-081-091-093-103-111-117-163-185-187-
211-215-223-052140-
KY
. KENTUCKY COUNTIES INCLUDED ARE
BOONE BRECKINRIDGE BULLITT
CAMPBELL CARROLL GALLATIN
GRANT HANCOCK HARDIN
HENRY JEFFERSON KENTON
MEADE OLDHAM OWEN
SHELBY SPENCER TRIMBLE
Read more
2 years 5 months ago
SPC 2000Z Day 1 Outlook
Day 1 Convective Outlook
NWS Storm Prediction Center Norman OK
0243 PM CDT Wed Apr 05 2023
Valid 052000Z - 061200Z
...THERE IS AN ENHANCED RISK OF SEVERE THUNDERSTORMS FROM WESTERN
TENNESSEE INTO THE OHIO RIVER VALLEY...
...SUMMARY...
Severe thunderstorm winds, large hail and a few tornadoes are
expected today from the Great Lakes to parts of east Texas and
Louisiana.
...Mid-MS River Valley to the Great Lakes region...
Broken convective line segments continue to migrate east/northeast
from western TN into the greater OH River Valley region. Damaging
winds continue to be noted with the stronger segments of the line
and/or embedded cells, and broken cloud cover ahead of the line
coupled with low 60s dewpoints continues to support MLCAPE values
near 1000 J/kg. Regional VWPs are also sampling 50+ flow within the
lowest 1-2 km, north of the OH River, which suggests that damaging
winds will remain possible with more organized segments.
...Lower MS River Valley...
Further south, an uptick in convective intensity is noted as the
broken line along/ahead of the cold front impinges on a more
unstable air mass (MLCAPE near 2000-2500 J/kg). The threat for
severe wind/hail, and perhaps a tornado, will continue through the
evening hours - see MCD #488 for additional details.
..Moore/Gleason.. 04/05/2023
.PREV DISCUSSION... /ISSUED 1121 AM CDT Wed Apr 05 2023/
...Great Lakes into Lower MS Valley today...
A long band of broken convection extends along/ahead of a cold front
from southern Lower MI into parts of IN/IL/MO/AR/TX. This line will
progress eastward today across much of the OH/TN Valleys. Ample low
level moisture and strong winds aloft will maintain a risk of bowing
structures and associated risk of damaging wind gusts across the
region. A few cells along or ahead of the line could also organize
into supercells, posing a risk of tornadoes. Considerable clouds,
lessening midlevel lapse rates, and shorter-term convective trends
are decreasing the confidence of a more widespread damaging wind
event, but there is sufficient concern of re-intensification this
afternoon to maintain the ENH risk and associated 30% severe wind
probabilities in some areas.
...TX/LA/MS/TN/AL tonight...
Several weak shortwave troughs are rotating through the base of the
upper trough, resulting in increasing large scale forcing for ascent
by evening over parts of east TX/LA. This will result in scattered
thunderstorms that spread eastward into northern MS, west TN, and
northwest AL. Low-level winds will not be particularly strong in
this area, and many of the storms will be on the north side of the
stalled front. Nevertheless, a few of the storms may pose a risk of
large hail and gusty winds.
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2 years 5 months ago
WW 0126 Status Updates
STATUS REPORT ON WW 126
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 ESE PAH
TO 40 SW EVV TO 35 N EVV.
WW 126 WILL BE ALLOWED TO EXPIRE AT 052100Z.
..SQUITIERI..04/05/23
ATTN...WFO...LZK...MEG...PAH...
STATUS REPORT FOR WT 126
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
INC051-125-147-163-173-052100-
IN
. INDIANA COUNTIES INCLUDED ARE
GIBSON PIKE SPENCER
VANDERBURGH WARRICK
KYC033-035-047-055-059-101-107-143-149-177-219-221-225-233-
052100-
KY
. KENTUCKY COUNTIES INCLUDED ARE
CALDWELL CALLOWAY CHRISTIAN
CRITTENDEN DAVIESS HENDERSON
HOPKINS LYON MCLEAN
MUHLENBERG TODD TRIGG
UNION WEBSTER
MSC093-107-052100-
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2 years 5 months ago
WW 0125 Status Updates
STATUS REPORT ON WW 125
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 25 E MIE TO
25 WSW TOL TO 25 NNW TOL TO 20 SSW MTC.
WW 125 WILL BE ALLOWED TO EXPIRE AT 052000Z.
..SQUITIERI..04/05/23
ATTN...WFO...IWX...GRR...DTX...
STATUS REPORT FOR WT 125
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
MIC091-115-052000-
MI
. MICHIGAN COUNTIES INCLUDED ARE
LENAWEE MONROE
OHC003-051-069-137-052000-
OH
. OHIO COUNTIES INCLUDED ARE
ALLEN FULTON HENRY
PUTNAM
LEZ444-052000-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
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Checked
5 years 11 months ago
Storm Prediction Center
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