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Hoosier

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March 9, 1998

METAR KMDW 091553Z 35019G28KT 1/4SM +SN FZFG VV002 M02/M02 A2956 RMK AO2 PK WND 01030/1455 PRESRR SLP021 SNINCR 3/7 R31C/2400FT P0000 T10221022 $

METAR KMDW 091053Z 01017G33KT 1/2SM TSSN FG OVC008 01/00 A2941 RMK AO2 PK WND 02036/1011 TSB48 SLP969 R04R/3500V5000FT OCNL LTGIC OHD TS OHD SNINCR 1/1 P0003 T00060000 $

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-17º (-43º WC) at about the time I usually headed out for my first class back on Jan 18, 1994.

METAR KLAF 181300Z 28015KT 7SM -BLSN SCT015 M27/M32 A3038 RMK SLPNO T12731323

1994 is the only time I can recall getting off school due to the cold. Of course I wasn't in college then.

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Hey Tim, do you remember what day LAF had that ridiculous 85 or 86 degree dewpoint?

No. But I'm looking right now.

EDIT: found it. July 27, 1997. Has to an error though. HI would've been 131º with the temp at 97º.

METAR KLAF 271745Z 22010KT 8SM FEW045 SCT180 36/30 A2991

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I really dont understand METAR's very well...but my favorite off the top of my head, obviously most recent memory, is DTW's 7pm obs from Feb 20, 2011

METAR KDTW 202353Z COR 08009G15KT 1/8SM R04R/2400V4000FT +TSSN FZFG OVC006CB M02/M03 A2988 RMK AO2 TWR VIS 1/2 TSB47PLB04E18 SLP127 OCNL LTGIC ALQDS AND OHD TS ALQDS AND OHD MOV E P0016 60054 T10221028 10000 21022

In lamens terms the obs was:

28F

Heavy Thunderstorms and Snow

Visib 0.06 mi

This METAR seems longer than some of the ones you guys posted, can anyone explain it for the METAR-illiterate like myself lol?

I was in that blinding snow, vivid lightning, and crashing thunder...took me by surprise, and though I have experienced thundersnow several times, the thundersnow of March 4, 2008 and February 20, 2011 was unreal, it sounded as violent as a strong summer thunderstorm.

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No. But I'm looking right now.

EDIT: found it. July 27, 1997. Has to an error though. HI would've been 131º with the temp at 97º.

METAR KLAF 271745Z 22010KT 8SM FEW045 SCT180 36/30 A2991

Ha, that's awesome. Seems a little hard to believe but dewpoints were in the upper 70s/low 80s before that and it appears there was a front moving in based on the obs, which could've resulted in some moisture pooling. It's really hard to get an ob like that unless the sensor is in the middle of a corn field or it just started raining.

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MDW GHD blizzard...

Heavy thundersnow, 56mph wind gusts, small hail, 1/16th mile vis...

KMDW 020351Z AUTO 05026G49KT 1/16SM R31C/1200V2200FT +TSSNGS BLSN FZFG OVC001CB M06/M08 A2969 RMK AO2 PK WND 04049/0347 TSB04E17B36GSB46 SLP069 OCNL LTGICCG OHD TS OHD MOV N SNINCR 1/11 T10611078 PNO $

Heavy thundersnow, 58mph wind gusts and 1/16th mile vis...

KMDW 020251Z COR 05031G50KT 1/16SM R31C/1200V2200FT +TSSN BLSN FZFG OVC001CB M06/M08 A2968 RMK AO2 PK WND 05050/0249 SLP065 OCNL LTGIC OHD TS OHD MOV N SNINCR 2/10 6//// T10611083 58072 PNO $

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Was gonna post the 107mph wind from Moline, but Hoosier beat me to it.

An 80 degree dew with a triple digit temp is always interesting. July 13, 1995 in Moline the heat index reached 122 with a 100/80 reading. Pretty impressive for an in town ASOS.

5:00 PM 100.0 °F 121.6 °F 80.1 °F 53% 29.89 in 10.0 mi SW 9.2 mph

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I really dont understand METAR's very well...but my favorite off the top of my head, obviously most recent memory, is DTW's 7pm obs from Feb 20, 2011

METAR KDTW 202353Z COR 08009G15KT 1/8SM R04R/2400V4000FT +TSSN FZFG OVC006CB M02/M03 A2988 RMK AO2 TWR VIS 1/2 TSB47PLB04E18 SLP127 OCNL LTGIC ALQDS AND OHD TS ALQDS AND OHD MOV E P0016 60054 T10221028 10000 21022

In lamens terms the obs was:

28F

Heavy Thunderstorms and Snow

Visib 0.06 mi

This METAR seems longer than some of the ones you guys posted, can anyone explain it for the METAR-illiterate like myself lol?

I was in that blinding snow, vivid lightning, and crashing thunder...took me by surprise, and though I have experienced thundersnow several times, the thundersnow of March 4, 2008 and February 20, 2011 was unreal, it sounded as violent as a strong summer thunderstorm.

It has a lot of remarks, basically concerning the TSSN (beginning time, movement, etc) Wunderground has a decent METAR tutorial: http://www.wundergro...om/metarFAQ.asp

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55º to 33º in one hour, or 38 minutes, on January 28, 2009. Winds gusted to 54 mph as the intense front rolled through. Observations from 6:16pm to 6:54pm that night.

SPECI KLAF 292316Z 24011G20KT 10SM VCTS OVC017 13/10 A2907 RMK AO2 LTG DSNT SW-N TSB10

SPECI KLAF 292323Z 27024G31KT 2 1/2SM VCTS +RA FEW012 BKN017 OVC022 11/08 A2908 RMK AO2 PK WND 27031/2322 WSHFT 2308 LTG DSNT ALQDS TSB10RAB19 P0012

SPECI KLAF 292328Z 28030G47KT 1 1/2SM +RA BR SCT011 BKN016 OVC034 09/07 A2909 RMK AO2 PK WND 27047/2328 WSHFT 2308 LTG DSNT ALQDS TSB10E28RAB19 PRESRR P0018

SPECI KLAF 292332Z 30027G47KT 2SM RA BR FEW005 OVC016 05/03 A2912 RMK AO2 PK WND 27047/2328 WSHFT 2308 LTG DSNT ALQDS TSB10E28RAB19 PRESRR P0019

SPECI KLAF 292336Z 30033G47KT 2 1/2SM VCTS RA BR SCT005 BKN011 OVC016 02/01 A2914 RMK AO2 PK WND 27047/2328 WSHFT 2308 LTG DSNT ALQDS TSB10E28B36RAB19 PRESRR P0021

SPECI KLAF 292347Z 29021G36KT 5SM VCTS -RA BR FEW006 BKN012 OVC038 01/M01 A2917 RMK AO2 PK WND 27047/2328 WSHFT 2308 LTG DSNT NE AND S AND SW TSB10E28B36RAB19 P0023

METAR KLAF 292354Z 30017G31KT 7SM VCTS -RA SCT008 BKN025 OVC049 01/M01 A2916 RMK AO2 PK WND 27047/2328 WSHFT 2308 LTG DSNT ALQDS TSB10E28B36RAB19 SLP877 P0023 60024 T00061011 10128 20006 53005

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Chicago (ORD) 1/20/1985...-26F at 6 AM, wind chill -77 on the old scale (-57 on the new scale). The dewpoint was -38F.

KORD 201200Z 27018KT 15SM CLR M32/M39 A3017 RMK SLP244 4/007 T13221389 52007

Intrahour, it hit -27F, which is the all-time record low.

Hoosier: I can't believe LAF was -18F at noon that day...crazy.

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DTW's 7pm obs from Feb 20, 2011

METAR KDTW 202353Z COR 08009G15KT 1/8SM R04R/2400V4000FT +TSSN FZFG OVC006CB M02/M03 A2988 RMK AO2 TWR VIS 1/2 TSB47PLB04E18 SLP127 OCNL LTGIC ALQDS AND OHD TS ALQDS AND OHD MOV E P0016 60054 T10221028 10000 21022

28F

Heavy Thunderstorms and Snow

Visib 0.06 mi

Wind E 10mph, G 17mph

DTW 10am obs, Jan 22, 2005

METAR KDTW 221454Z 02014KT 1/8SM R03L/1000V1400FT +SN FZFG BKN002 OVC009 M12/M13 A2964 RMK AO2 SLP049 SNINCR 1/6 DRFTG SN P0004 60010 T11171133 56013

11F

Heavy Snow

Visib 0.1 mi

Wind NNE 16 mph

******************************************

DTW 4pm obs, Jan 2, 1999

METAR KDTW 022054Z 09019G25KT M1/4SM +SN FZFG VV001 M06/M07 A2989 RMK AO2 PK WND 09029/2026 TWR VIS 1/4 PRESFR SLP133 SNINCR 2/7 P0021 T10561067 56063 RVRNO $

22F

Heavy Snow

Visib 0.2 mi

Wind E 22 mph, G 29 mph

(I could have sworn DTW had 0.0mi visib in 1999, but obs show it was 0.2 mi from 1pm on through the rest of the day)

*******************************************

DTW 5am obs, Jan 14, 1992

METAR KDTW 141000Z 36020KT 1/4SM TSSN -BLSN OVC001 M03/M04 A2917 RMK R03LVR14V18 TB07 OVHD MOVG N OCNL LTGIC OVHD SNOINCR SLP884 P0012 7/5/6 T10281039 520/5

27F

Light Thunderstorms and Snow

Visib 0.2 mi

Wind N 23 mph

*********************************************

DTW 1pm obs, Dec 1, 1974

METAR KDTW 011800Z 05020G25KT 1/8SM +SN OVC001 00/M01 A2985 RMK R03LVR8V10DRFTG SNO SNOINCR1DTW SLP116 P0011 60055 8/2/9 T00001011

32F

Heavy Snow

Visib 0.1 mi

Wind NE 23 mph, G 29 mph

(Thunderstorm was reported later that day as a spec obs)

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The lake effect snow event on Christmas 2010. My favorite lake effect snow event!

28°F, WC: 18.1°F, 0.2mi visibility, Heavy snow, fog.

10:52 PM 28.0 °F 18.1°F 25.0 °F 88% 30.27in 0.2 mi NNW 11.5 mph 19.6 mph 0.13 in Fog, Snow Heavy Snow

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One of my personal favorites of all time from DTW, simply because it came out as "Heavy Thunderstorm Rain Fog Squalls and Windy" on the DTX observation page.

This was May 23rd, 2004 at 6:54PM EDT:

METAR KDTW 232254Z 23026G68KT 1/2SM +TSRA FG SQ FEW005 BKN027 OVC044CB 19/18 A2970 RMK AO2 PK WND 22068/2247 TWR VIS 4 TSB00RAB09 SLP054 CON LTGICCG S-SW AND OHD TS SW-W AND OHD MOV E P0095 T01890183 RVRNO

The rain was absolutely torrential as well. I actually remember a seperate severe event when a Derecho hit the area on the 21st, and it produced rainfall rates in excess of 6" an hour. Luckily, the storm moved at such a violent forward speed it only dropped about an inch of rain or so, but it's no surprise that this was the wettest May ever in Detroit with all of the severe weather events that occured that month.

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Chicago (ORD) 1/20/1985...-26F at 6 AM, wind chill -77 on the old scale (-57 on the new scale). The dewpoint was -38F.

KORD 201200Z 27018KT 15SM CLR M32/M39 A3017 RMK SLP244 4/007 T13221389 52007

Intrahour, it hit -27F, which is the all-time record low.

Hoosier: I can't believe LAF was -18F at noon that day...crazy.

That 85 airmass was the real deal. Those record/really low temps weren't achieved with anything close to optimal radiational cooling. It was super cold air advection at work.

There was a pocket of -30C air over LAF around the time of that observation. Combine that with snow cover at the coldest time of the year and crazy things can happen. Another good ob from that event... -13F with light snow on the evening of the 19th...probably one of the coldest temps with snow at LAF.

METAR KLAF 200300Z 30015G20KT 5SM -SN OVC010 M25/M33 A3011 RMK PCPN VRY LGT SLP218 T12491327

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