Chris Swafford
on August 28, 2021
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ACUS11 KWNS 281813
SWOMCD
SPC MCD 281813
WIZ000-MIZ000-MNZ000-282015-
Mesoscale Discussion 1629
NWS Storm Prediction Center Norman OK
0113 PM CDT Sat Aug 28 2021
Areas affected...east-central Minnesota into northern Wisconsin
Concerning...Tornado Watch 468...
Valid 281813Z - 282015Z
The severe weather threat for Tornado Watch 468 continues.
SUMMARY...Severe storms are expected to persist out of Minnesota and
across northern Wisconsin, with primarily damaging gust potential.
DISCUSSION...A compact but long-lived MCS is now crossing the MS
River, with extensive outflow boundary trailing southwestward. The
strongest part of this MCS is traveling along a diffuse boundary.
South of this boundary, temperatures continue to slowly rise to near
80 F despite substantial cloud cover. Breaks in the clouds do exist
however, from near the Twin Cities into western WI.
Objective analysis indicates MLCAPE of 1500-2000 J/kg ahead of the
MCS, which should support a continues damaging wind threat. The 18Z
MPX sounding shows the effects of cooler, stabilizing outflow air
from convection over IA, and this will likely limit southward growth
potential with the ongoing MCS. Embedded areas of rotation cannot be
ruled out within the arcing line of convection, though effective SRH
ahead of the MCS is currently only averaging around 100 m2/s2.
..Jewell.. 08/28/2021
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...MQT...GRB...DLH...ARX...MPX...
LAT...LON 46289283 46729165 46989074 46759032 46249000 45698997
45369041 45199157 45189320 45259367 45639341 45869329
46039332 46289283
WOUS20 KWNS 281913
WWASPC
SPC WW-A 281915
MNZ000-WIZ000-LSZ000-282040-
STATUS REPORT ON WW 468
SEVERE WEATHER THREAT CONTINUES RIGHT OF A LINE FROM 30 E MSP TO
60 NNE MSP TO 50 SW DLH TO 25 SSW DLH TO 20 ENE DLH.
..JEWELL..08/28/21
ATTN...WFO...DLH...MPX...
&&
STATUS REPORT FOR WT 468
SEVERE WEATHER THREAT CONTINUES FOR THE FOLLOWING AREAS
WIC003-005-007-013-017-031-033-051-095-099-107-109-113-129-
282040-
WI
. WISCONSIN COUNTIES INCLUDED ARE
ASHLAND BARRON BAYFIELD
BURNETT CHIPPEWA DOUGLAS
DUNN IRON POLK
PRICE RUSK ST. CROIX
SAWYER WASHBURN
$$
LSZ121-145-146-147-148-150-282040-
CW
. ADJACENT COASTAL WATERS INCLUDED ARE
CHEQUAMEGON BAY-BAYFIELD TO OAK POINT WI
DULUTH MN TO PORT WING WI
PORT WING TO SAND ISLAND WI
SAND ISLAND TO BAYFIELD WI
OAK POINT TO SAXON HARBOR WI
OUTER APOSTLE ISLANDS BEYOND 5 NM FROM MAINLAND
$$
THE WATCH STATUS MESSAGE IS FOR GUIDANCE PURPOSES ONLY. PLEASE
REFER TO WATCH COUNTY NOTIFICATION STATEMENTS FOR OFFICIAL
INFORMATION ON COUNTIES...INDEPENDENT CITIES AND MARINE ZONES
CLEARED FROM SEVERE THUNDERSTORM AND TORNADO WATCHES.
$$
FXUS06 KWBC 281902
PMDMRD
Prognostic Discussions for 6 to 10 and 8 to 14 day outlooks.
NWS Climate Prediction Center, College Park, MD
300 PM EDT Sat August 28 2021
There is no forecaster message written on weekends.
Notes:
Automated forecasts are issued on Saturday and Sunday. Occasionally manual
intervention is necessary to address quality control and consistency issues. In
these cases, forecasts are manually drawn but a full discussion is not issued.
The notation for the categorical forecast indicated on the maps is the same as
that in the tables: A-above N-near normal B-below
The temperature map shows regions with > 33% chance of being warmer (orange,
"A"), colder (blue, "B"), or close to (unshaded, "N"). Historical average
values for the calendar period of the forecast (dashes, "f"). Labels on the
shaded lines give the probability (> 33%) of the more likely category (B or A).
Probability of N is always < 40%.
The precipitation map shows regions with > 33% chance of being wetter (green,
"A"), drier (tan, "B"), or close to (unshaded, "n"). Historical median values
for the calendar period of the forecast (dashes, "inches"). Labels on the
shaded lines give the probability (> 33%) of the more likely category (B or A).
Probability of N is always < 40%.
In the southwest and other climatologically dry regions - there will be a
greater than 33.3% chance of no precipitation and occasionally even a normal
(i.e. Median) value of zero - especially during the dry seasons. In such cases
a forecast of near normal is effectively a forecast of little or no
precipitation.
The climate prediction center uses 1981-2010 base period means for
temperature...precipitation...and 500-hpa heights as reference in the climate
outlooks.
Analogs to the 5 day mean observed pattern centered 3 days ago (D-3)
for the region from 20N to 70N latitude and 175E to 60W longitude
include the 5 day periods centered on the following dates:
20020831 - 19800830 - 19990904 - 20030911 - 19730808
Analogs to the 7 day mean observed pattern centered 4 days ago (D-4)
for the region from 20N to 70N latitude and 175E to 60W longitude
include the 7 day periods centered on the following dates:
20020830 - 19730808 - 20030910 - 20020809 - 19800831
6 TO 10 DAY OUTLOOK TABLE
Outlook for Sep 03 - 07, 2021
STATE TEMP PCPN STATE TEMP PCPN STATE TEMP PCPN
WASHINGTON A B OREGON A B NRN CALIF N B
SRN CALIF N N IDAHO N B NEVADA A B
W MONTANA N B E MONTANA N A WYOMING N A
UTAH A N ARIZONA N N COLORADO A A
NEW MEXICO A N N DAKOTA B A S DAKOTA N A
NEBRASKA A A KANSAS A N OKLAHOMA A B
N TEXAS A B S TEXAS A N W TEXAS A B
MINNESOTA N N IOWA N N MISSOURI A N
ARKANSAS A B LOUISIANA A A WISCONSIN N N
ILLINOIS N N MISSISSIPPI A N MICHIGAN N A
INDIANA A N OHIO N N KENTUCKY A N
TENNESSEE A N ALABAMA A N NEW YORK B A
VERMONT B A NEW HAMP B A MAINE B A
MASS N A CONN N A RHODE IS N A
PENN N A NEW JERSEY N A W VIRGINIA A N
MARYLAND N N DELAWARE N N VIRGINIA A N
N CAROLINA A N S CAROLINA A N GEORGIA A N
FL PNHDL A N FL PENIN A B AK N SLOPE N A
AK ALEUTIAN A B AK WESTERN A B AK INT BSN A A
AK S INT A N AK SO COAST A N AK PNHDL A A
8 TO 14 DAY OUTLOOK TABLE
Outlook for Sep 05 - 11, 2021
STATE TEMP PCPN STATE TEMP PCPN STATE TEMP PCPN
WASHINGTON A B OREGON A B NRN CALIF A B
SRN CALIF A N IDAHO A B NEVADA A B
W MONTANA A B E MONTANA N B WYOMING A B
UTAH A B ARIZONA A B COLORADO A B
NEW MEXICO A N N DAKOTA N N S DAKOTA B B
NEBRASKA N B KANSAS A N OKLAHOMA A N
N TEXAS A A S TEXAS A A W TEXAS A N
MINNESOTA B N IOWA B N MISSOURI N A
ARKANSAS N A LOUISIANA A A WISCONSIN B N
ILLINOIS B A MISSISSIPPI N A MICHIGAN N A
INDIANA B A OHIO B A KENTUCKY B A
TENNESSEE B A ALABAMA N A NEW YORK B A
VERMONT N A NEW HAMP N A MAINE N A
MASS N A CONN N A RHODE IS N A
PENN N A NEW JERSEY N A W VIRGINIA N A
MARYLAND A A DELAWARE A A VIRGINIA A A
N CAROLINA A A S CAROLINA A N GEORGIA A A
FL PNHDL A N FL PENIN A N AK N SLOPE N N
AK ALEUTIAN A B AK WESTERN A N AK INT BSN A A
AK S INT A N AK SO COAST A B AK PNHDL A A
LEGEND
TEMPS WITH RESPECT TO NORMAL PCPN WITH RESPECT TO MEDIAN
A - ABOVE N - NEAR NORMAL A -
NWUS20 KWNS 281755
STADTS
SPC TORNADO AND SEVERE THUNDERSTORM REPORTS
UNOFFICIAL - FOR OFFICIAL REPORTS, SEE PUBLICATION 'STORM DATA'
FOR 06CST FRI AUG 27 2021 THRU 06CST SAT AUG 28 2021
EVENT LOCATION REMARKS (CST)TIME
.....TORNADO REPORTS..........TORNADO REPORTS..........TORNADO REPORTS.....
1 *TORN 5 S CLEAR LAKE IA (6 SSW MCW) 27/1607
TRAINED SPOTTER RELAYED REPORT TO EM OF BRIEF DMX/LSR 4307 9339
TORNADO TOUCH DOWN WES
2 *TORN 5 SSE CLEAR LAKE IA (5 S MCW) 27/1615
TRAINED SPOTTER RELAYED REPORT TO COUNTY LAW DMX/LSR 4307 9334
ENFORCEMENT OF BRIEF T
3 *TORN 2 W MARBLE ROCK IA (24 ESE MCW) 27/1656
ARX/LSR 4296 9291
4 *TORN 1 S MARBLE ROCK IA (27 ESE MCW) 27/1700
DAMAGE IS EXTENSIVE SOUTH TO EAST-NORTHEAST OF ARX/LSR 4295 9287
MARBLE ROCK.
5 *TORN 4 SW CHARLES CITY IA (31 ESE MCW) 27/1709
ARX/LSR 4303 9273
6 *TORN 2 SE MARBLE ROCK IA (28 ESE MCW) 27/1710
LARGE ABOVE GROUND PROPANE TANKS WERE KNOCKED ARX/LSR 4294 9284
OVER BY A TORNADO.
.......LRG HAIL/STRONG WIND RPTS.............LRG HAIL/STRONG WIND RPTS......
32 WNDG 4 NNE CROSS PLAINS WI (14 W MSN) 27/0835
TREE SNAPPED OFF AT BASE. MKX/LSR 4317 8962
33 WNDG FOX LAKE WI (33 SSW OSH) 27/0940
COMBINATION OF LIGHTNING STRIKES AND WIND GUSTSMKX/LSR 4357 8891
TO 40 TO 50 MPH WITH R
34 WNDG 2 NE TOBYHANNA PA (19 ESE AVP) 27/1033
DOWNED TREE LIMBS AND WIRES NEAR COUNTRY PLACE PHI/LSR 4120 7539
DRIVE. TIME ESTIMATED
35 WNDG GROSSE POINTE FARMS MI (14 SSW MTC) 27/1130
NUMEROUS TREES AND WIRES DOWN. TIME ESTIMATED DTX/LSR 4240 8289
BY RADAR.
36 WNDG 2 N TOBYHANNA TWP PA (15 SE AVP) 27/1136
DOWNED WIRES NEAR MAPLE DRIVE. TIME ESTIMATED PHI/LSR 4115 7554
FROM RADAR.
37 WNDG 1 NW TUNKHANNOCK TWP PA (23 SSE AVP) 27/1159
DOWNED WIRES NEAR STATE ROUTE 115. TIME PHI/LSR 4103 7549
ESTIMATED FROM RADAR.
38 WNDG 1 NNE CALN TWP PA (24 NNW ILG) 27/1204
MULTIPLE TREES DOWN ON OSBORNE ROAD. TIME PHI/LSR 4002 7575
ESTIMATED FROM RADAR.
39 WNDG 1 NNW CALN TWP PA (24 NNW ILG) 27/1205
SEVERAL TREES REPORTED DOWN AROUND CALN PHI/LSR 4001 7576
TOWNSHIP. TIME ESTIMAT
40 WNDG 1 NW CALN TWP PA (24 NNW ILG) 27/1210
SEVERAL LARGE BRANCHES DOWN BLOCKING TRAFFIC. PHI/LSR 4001 7576
TIME ESTIMATED FROM RA
41 WNDG 2 SW EAST BRANDYWINE TW PA (24 NNW ILG) 27/1213
MULTIPLE TREES DOWN ON HURLEY ROAD. TIME PHI/LSR 4001 7579
ESTIMATED FROM RADAR.
42 WNDG 1 ESE WAGONTOWN PA (25 NNW ILG) 27/1218
SEVERAL TREES DOWN IN THE AREA OF PRATTS DAM PHI/LSR 4000 7582
ROAD. TIME ESTIMATED F
43 WNDG 2 SE EAST BRANDYWINE TW PA (24 NNW ILG) 27/1220
TREE AND POLE DOWN IN THE 900 BLOCK OF PHI/LSR 4002 7574
HORSESHOE PIKE. TIME E
44 WNDG 1 SE KRESGEVILLE PA (16 N ABE) 27/1226
DOWNED TREE IN WIRES ON MOLASSES VALLEY ROAD. PHI/LSR 4089 7548
TIME ESTIMATED FROM RA
45 WNDG 1 N COATESVILLE PA (24 NNW ILG) 27/1230
TREES DOWN ALONG ROUTE 84 BETWEEN 30 BYPASS ANDPHI/LSR 3999 7583
30 BUSINESS JUST NORTH
46 WNDG 1 NNE COATESVILLE PA (24 NNW ILG) 27/1230
MULTIPLE TREES DOWN AT ROUTE 30 BYPASS AND PHI/LSR 4000 7581
MOORE ROAD. TIME ESTIM
47 WNDG 2 SSW GILBERT PA (15 N ABE) 27/1234
DOWNED TREE LIMBS AND WIRES NEAR BLACKBERRY PHI/LSR 4088 7545
LANE. TIME ESTIMATED F
48 WNDG HOPE NJ (30 NE ABE) 27/1239
DOWNED TREES AND WIRES NEAR MOUNT HERMON ROAD. PHI/LSR 4091 7497
TIME ESTIMATED FROM RA
49 WNDG VALLEY TWP PA (24 NNW ILG) 27/1242
DOWNED TREE ON RAINBOW ROAD NEAR WEST LINCOLN PHI/LSR 3998 7585
HIGHWAY. TIME ESTIMATE
163 G 54 4 NNW BELLEAIR FL (10 WNW PIE) 27/1248
MESONET STATION FW1789 CLEARWATER BEACH. TBW/LSR 2799 8283
50 WNDG GREAT MEADOWS NJ (30 ENE ABE) 27/1250
SMALL AREA OF LIMBS DOWN JUST WEST OF GREAT PHI/LSR 4087 7492
MEADOWS ALONG US 46. T
51 WNDG 1 WSW LIBERTY TWP NJ (28 ENE ABE) 27/1255
DOWNED TREES AND WIRES NEAR MOUNTAIN LAKE ROAD.PHI/LSR 4087 7497
TIME ESTIMATED FROM RA
52 WNDG 1 SSW GREAT MEADOWS NJ (30 ENE ABE) 27/1258
DOWNED TREES AND WIRES NEAR HUDSON LANE. TIME PHI/LSR 4086 7492
ESTIMATED FROM RADAR.
53 WNDG 1 SW GREAT MEADOWS NJ (30 ENE ABE) 27/1259
AN MPING REPORT OF DOWNED TREE LIMBS. PHI/LSR 4086 7492
54 WNDG 1 ENE BERKELEY TWP NJ (8 SSE NEL) 27/1300
DOWNED WIRES NEAR PINEWALD KESWICK ROAD. TIME PHI/LSR 3993 7428
AXNT20 KNHC 281756
TWDAT
Tropical Weather Discussion
NWS National Hurricane Center Miami FL
1805 UTC Sat Aug 28 2021
Tropical Weather Discussion for North America, Central America
Gulf of Mexico, Caribbean Sea, northern sections of South
America, and Atlantic Ocean to the African coast from the
Equator to 31N. The following information is based on satellite
imagery, weather observations, radar and meteorological analysis.
Based on 1200 UTC surface analysis and satellite imagery through
1745 UTC.
...SPECIAL FEATURES...
Hurricane Ida is near 24.8N 86.1W 984 mb at 28/1500 UTC EDT
moving NW at 14 kt. Maximum sustained winds 75 kt gusts 90 kt.
Estimated minimum central pressure is 984 mb. The maximum sea
heights are 30 ft. Scattered moderate to strong convection is
found mainly from 24N-26N between 84W-87W. An outer band with
numerous moderate to strong Convection is also noted 100 nm E of
the eye of the storm from 23N to 27N between 82W to 84W. On the
forecast track, the center of Ida will move over the southeastern
Gulf of Mexico today and move over the central Gulf of Mexico
tonight and early Sunday. Ida is then expected to make landfall
along the U.S. northern Gulf coast within the hurricane warning
area on Sunday, and then move inland over portions of Louisiana
or western Mississippi later Monday. Rapid strengthening is
forecast during the next 24 to 36 hours and Ida is expected to be
an extremely dangerous major hurricane when it approaches the
northern Gulf coast on Sunday. Weakening is expected after Ida
makes landfall. Please read the latest NHC Public Advisory at
https://www.nhc.noaa.gov/text/MIATCPAT4.shtml and
Forecast/Advisory at
https://www.nhc.noaa.gov/text/MIATCMAT4.shtml for more details.
Refer to the NHC High Seas Forecasts at
https://www.nhc.noaa.gov/text/MIAHSFAT2.shtml for marine impacts.
Tropical Depression Ten is near 14.8N 50.1W at 28/1500 UTC or 695
nm E of the Leeward Islands, moving N at 7 kt. Estimated minimum
central pressure is 1007 mb. Maximum sustained wind speed is 30
kt with gusts to 40 kt. Scattered moderate to strong convection
is noted from 12N-18N between 45W-50W. On the forecast track, the
depression is moving toward the north and this general motion is
forecast to continue during the next several days. Some slight
strengthening is forecast, and the depression is expected to
become a tropical storm on Sunday. Please read the latest NHC
Public Advisory at https://www.nhc.noaa.gov/text/MIATCPAT5.shtml
and Forecast/ Advisory at
https://www.nhc.noaa.gov/text/MIATCMAT5.shtml for more details.
Showers and thunderstorms associated with an elongated area of
low pressure located over the central Atlantic has become a
little better organized overnight. Environmental conditions are
expected to be only marginally conducive for further development.
However, a tropical depression could still form within the next
couple of days. By midweek, the system is forecast to be absorbed
by a frontal system. The disturbance is expected to drift
eastward through today, then accelerate northeastward Sunday
toward the central north Atlantic. This system has a medium
chance of tropical cyclone formation during the next 48 hours.
Please refer to the NHC Tropical Weather Outlook at
www.hurricanes.gov for more details.
...TROPICAL WAVES...
An Atlantic tropical wave has moved off the African coast along
16W from 19N southward, moving W at 15 kt. Scattered moderate to
isolated strong convection is seen from 11N-17N along the coast
of Guinea-Bissau and Guinea E of 20W.
An Atlantic tropical wave is along 34W from 17N southward and
moving W at 15 to 20 kt. Scattered showers are noted in the
vicinity of the wave axis.
Another Atlantic tropical wave is near 53W from 18N southward and
moving W near 15 kt. This wave is in proximity of T.D. Ten
mentioned in the Special Features section above. Scattered
moderate convection is noted from 08N-16N between 53W-60W.
A Caribbean tropical wave is along 70W from 20N southward across
Hispaniola to N Venezuela, and moving W near 10 to 15 kt.
Scattered showers are noted across t
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