National Weather Service United States Department of Commerce

Flash Flood Risk across the Ohio Valley Today; Severe Storms Possible from the Ohio Valley to Southern Plains

Thunderstorms will produce additional heavy rainfall across much of the Ohio Valley through this evening, leading to a moderate risk for flash flooding due to grounds already being saturated across the region. Elsewhere, severe thunderstorms are possible from the Ohio Valley to the Southern Plains, and critical fire weather conditions are forecast across parts of the Pacific Northwest today. Read More >

 

April 3 One Day Temperature Change   |    April 2-4 Ups and Downs

 


One Day Temperature Change; 5th Largest on Record in Rockford

 

 

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
904 PM CDT SUN APR 3 2016 /1004 PM EDT SUN APR 3 2016/

...IMPRESSIVE SINGLE DAY TEMPERATURE CHANGE...

WHILE THE WEATHER IN SPRINGTIME ACROSS THE MIDWEST FEATURES UPS
AND DOWN AND SOME IN QUICK SUCCESSION...THE RATE OF WEATHER
CHANGES EARLY THIS APRIL HAVE BEEN IMPRESSIVE. OF NOTE WERE THE
TEMPERATURES ALONE ON SUNDAY APRIL 3RD. AFTER A CHILLY MORNING BY
APRIL STANDARDS WITH TEMPERATURES IN THE 20S...LATE AFTERNOON
HIGHS REBOUNDED INTO THE 70S. HERE IS HOW THIS SINGLE DAY...OR
DIURNAL...TEMPERATURE CHANGE COMPARES TO PAST EXTREME RANGES.

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ROCKFORD

- WITH A LOW OF 27 AND A HIGH OF 75 ON SUNDAY APRIL 3RD...THERE WAS
  A TOTAL DIURNAL RANGE OF 48 DEGREES.

- THIS WAS THE FIFTH LARGEST DIURNAL CHANGE IN THE PERIOD OF RECORD
  FOR ROCKFORD /SINCE 1905/.

RANK     DATE      TEMPERATURE RANGE    HIGH    LOW
---------------------------------------------------
1.     3/23/1939           52            82      30
2.      4/2/1981           50            79      29
       1/18/1996           50            57       7
4.     1/29/2008           49            48      -1
5.      4/3/2016           48            75      27


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CHICAGO

- WITH A LOW OF 26 AND A HIGH OF 71 ON SUNDAY APRIL 3RD...THERE WAS
  A TOTAL DIURNAL RANGE OF 45 DEGREES.

- THIS WAS THE LARGEST TEMPERATURE RANGE IN A SINGLE DAY SINCE
  JANUARY 29 2008...WHICH HAD A 46 DEGREE RANGE.

- THIS WAS TIED FOR THE 13TH LARGEST CALENDAR DAY TEMPERATURE
  CHANGE IN THE PERIOD OF RECORD /SINCE 1871/. THE LARGEST WAS 52
  DEGREES ON FEBRUARY 8TH 1900...WHICH SAW A LOW OF 10 AND A HIGH
  OF 62.

- THIS WAS THE LARGEST DIURNAL TEMPERATURE RANGE ON AN APRIL DAY
  SINCE APRIL 20 1936...WHICH SAW A 47 DEGREE RANGE FROM A LOW OF
  35 TO A HIGH OF 82.

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THE TEMPERATURE ROLLER COASTER WILL CONTINUE WITH MONDAY SEEING
HIGHS FALL BACK TO THE MID 30S TO MID 40S ACROSS THE AREA...WITH
THE COOLEST VALUES NEAR THE LAKE MICHIGAN SHORE INCLUDING DOWNTOWN
CHICAGO.

$$

MTF

 

Observed Highs & Lows on April 3rd

MAXIMUM/MINIMUM TEMPERATURE AND PRECIPITATION TABLE
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
710 PM CDT SUN APR 3 2016

High temperature last 18 hours
Low temperature last 18 hours
Precipitation last 24 hours
Snowfall last 24 hours

.BR LOT 0403 C DH19/TAIRZS/TAIRZI/PPDRZZ/SFDRZZ

:Id Location                  High   Low    Pcpn  Snowfall
ORD: Chicago-O`Hare         :  71  /  26  /  0.00  / 0.0
CNII2: Chicago-Northerly Isl:  71  /  31  /
MDW: Chicago-Midway         :  72  /  29  /  0.00
LOTI2: NWS Romeoville       :  71  /  25  /  0.00  / 0.0
RFD: Rockford Airport       :  75  /  27  /  0.00  / 0.0
DPA: Dupage Airport         :  72  /  25  /  0.00
UGN: Waukegan Airport       :  71  /  24  /  0.00
ARR: Aurora/Sugar Grove     :  73  /  26  /  0.00
PWK: Wheeling/CHI Exec      :  72  /  27  /  0.00
VPZ: Valparaiso IN          :  65  /  25  /  0.00
:
:Unofficial Supplemental AWOS Locations
:
DKB: Dekalb                 :  73  /  26  /
JOT: Joliet                 :  74  /  25  /
IKK: Kankakee               :  67  /  26  /
IGQ: Lansing                :  66  /  26  /
C09: Morris                 :  73  /  26  /
VYS: Peru                   :  75  /  29  /
PNT: Pontiac                :  74  /  28  /
RZL: Rensselaer IN          :  63  /  28  /
RPJ: Rochelle               :  73  /  26  /

 



April 2nd-4th Ups and Downs

 
Temperature Change

 

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE CHICAGO IL
927 PM CDT MON APR 4 2016 /1027 PM EDT MON APR 4 2016/

...RECENT SHARP DAY-TO-DAY TEMPERATURE CHANGES ARE QUITE RARE...

TEMPERATURES VARIED SIGNIFICANTLY FROM ONE DAY TO THE NEXT ACROSS
MOST OF NORTHERN ILLINOIS AND NORTHWEST INDIANA DURING THE THREE
DAY STRETCH FROM SATURDAY APRIL 2 THROUGH MONDAY APRIL 4. CHICAGO
AND ROCKFORD BOTH SAW A 30 DEGREE PLUS WARM UP FROM APRIL 2 TO
APRIL 3...AND THEN A 30 DEGREE PLUS COOL DOWN FROM APRIL 3 TO
APRIL 4. WHILE WE EXPECT SOME DRASTIC WARM UPS AND COOL DOWNS IN
THE MIDWEST...THIS RAPID SUCCESSION OF BOTH IS EXCEPTIONALLY RARE.

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ROCKFORD

                   HIGH   DIFFERENCE FROM PREVIOUS DAY
SAT APRIL 2 2016    41
SUN APRIL 3 2016    75              +34
MON APRIL 4 2016    42              -33

THERE HAS ONLY BEEN ONE OTHER INSTANCE DATING BACK TO 1905 WITH
A 30 DEGREE PLUS TEMPERATURE CHANGE IN BACK-TO-BACK-TO-BACK DAYS.
THAT WAS DURING FEBRUARY 2-4 1970. HERE IS A LOOK AT THE HIGHS
DURING THAT STRETCH:

                   HIGH   DIFFERENCE FROM PREVIOUS DAY
FEBRUARY 2 1970     36
FEBRUARY 3 1970     -3              -39
FEBRUARY 4 1970     32              +35

THERE HAVE BEEN SOME OTHER CLOSE INSTANCES SUCH AS JANUARY 18-20
1996 WHICH SAW HIGHS OF 57...7...AND 20 IN THREE CONSECUTIVE DAYS.
ALSO APRIL 1-3 1978 HAD HIGHS OF 64...36...AND 69.


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CHICAGO

                   HIGH   DIFFERENCE FROM PREVIOUS DAY
SAT APRIL 2 2016    40
SUN APRIL 3 2016    71              +31
MON APRIL 4 2016    38              -33

SINCE 1871 THERE HAVE ONLY BEEN THREE OTHER INSTANCES WITH A 30
DEGREE PLUS TEMPERATURE CHANGE IN BACK-TO-BACK-TO-BACK DAYS. HERE
ARE THOSE STRETCHES:

                   HIGH   DIFFERENCE FROM PREVIOUS DAY
FEBRUARY 3 1875     45
FEBRUARY 4 1875      5              -40
FEBRUARY 5 1875     35              +30

                  *HIGH   DIFFERENCE FROM PREVIOUS DAY
MARCH 27 1895       73
MARCH 28 1895       32              -41
MARCH 29 1895       80              +48

                   HIGH   DIFFERENCE FROM PREVIOUS DAY
FEBRUARY 2 1970     40
FEBRUARY 3 1970      2              -38
FEBRUARY 4 1970     36              +34

* = SOME OF THIS DATA FOR MARCH 1895 MAY HAVE ERRORS.

ONLY THE FINAL OCCURRENCE WAS DURING THE PERIOD WHEN THE OFFICIAL
CHICAGO OBSERVING SITE WAS NOT LOCATED IN DOWNTOWN CHICAGO. FROM
1942 TO 1980 THE OFFICIAL MEASUREMENTS WERE AT CHICAGO MIDWAY
INTERNATIONAL AIRPORT...AND FROM 1980 TO PRESENT IT HAS BEEN AT
CHICAGO OHARE INTERNATIONAL AIRPORT.

$$

MTF