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Severe weather analysis

Observations and analyses of the atmosphere now, from NWS, WPC and SPC. Not a forecast and not a warning: for those, see the Briefing and the Live tracker.

SPC soundings: feeds current

SPC soundings: Feed current; checked .

Checked means retrieved, not newly issued. Each graphic retains its issue, observation, initialization or valid time. Site publishing status is separate.

Soundings: what weather balloons measured

SPC’s skew-T diagram and hodograph of the sounding at Lincoln, IL (ILX), 00Z. Its levels are in the table below.
Observed Sounding at Lincoln, IL (ILX), for (4 h 58 min ago). SPC’s graphic; the values in its panels (CAPE, shear, the indices) are SPC’s computations from these levels. Data: NOAA/SPC.

A balloon launched about an hour before the time named, measuring as it rose and drifted with the wind: the atmosphere above one place, at one time. Model soundings, which are forecasts, are not shown here.

The levels this sounding was drawn from (61)
Lincoln, IL (ILX): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1004 mb178 m12.27.2325° 12 kt
1000 mb211 m11.45.4325° 20 kt
990 mb295 m10.44.4—
974 mb429 m9.34.0340° 22 kt
954 mb601 m7.93.5345° 30 kt
935 mb767 m6.63.0—
925 mb855 m6.02.3345° 32 kt
887 mb1196 m3.50.8355° 27 kt
865 mb1400 m2.0-0.1355° 26 kt
851 mb1532 m1.1-0.7000° 25 kt
850 mb1542 m1.0-0.7000° 25 kt
839 mb1647 m0.3-1.3005° 28 kt
814 mb1888 m-1.2-2.6000° 28 kt
802 mb2006 m-1.9-3.3355° 28 kt
786 mb2167 m-2.9-4.2—
769 mb2340 m-2.1-4.1—
754 mb2496 m-4.7-7.0355° 28 kt
732 mb2728 m-6.2-8.5355° 30 kt
700 mb3077 m-8.1-10.3350° 29 kt
662 mb3507 m-10.8-13.0335° 28 kt
644 mb3719 m-12.1-14.4—
633 mb3850 m-12.9-15.1345° 29 kt
623 mb3971 m-13.7-15.8345° 29 kt
605 mb4192 m-15.3-17.5340° 27 kt
593 mb4343 m-16.4-18.6335° 30 kt
574 mb4587 m-18.3-20.6335° 28 kt
559 mb4784 m-19.9-22.4—
547 mb4943 m-21.1-25.2330° 30 kt
530 mb5174 m-22.8-29.3345° 36 kt
512 mb5427 m-24.6-33.8345° 36 kt
500 mb5600 m-25.9-36.9345° 40 kt
468 mb6077 m-27.3-41.3—
457 mb6248 m-27.4-40.8000° 51 kt
438 mb6553 m-27.9-42.9—
423 mb6802 m-28.7-44.7—
409 mb7042 m-29.9-44.9—
400 mb7200 m-30.9-45.9010° 75 kt
390 mb7380 m-31.5-46.5—
375 mb7657 m-32.3-46.8005° 67 kt
362 mb7906 m-33.1-47.1—
350 mb8144 m-33.8-48.3000° 62 kt
339 mb8368 m-34.6-50.4000° 58 kt
325 mb8663 m-34.7-50.7—
300 mb9220 m-37.1-54.1330° 45 kt
288 mb9503 m-36.7-53.1320° 46 kt
268 mb10002 m-38.4-56.1305° 36 kt
255 mb10344 m-39.5-55.5285° 42 kt
250 mb10480 m-39.7-54.7285° 40 kt
240 mb10757 m-41.1-56.1—
230 mb11044 m-42.9-58.9—
220 mb11343 m-43.2-59.3270° 45 kt
207 mb11751 m-44.1-60.1—
200 mb11980 m-45.1-61.1245° 65 kt
185 mb12496 m-48.3-63.3—
172 mb12976 m-47.5-61.5—
150 mb13870 m-52.5-67.5250° 67 kt
139 mb14359 m-55.3-69.3265° 77 kt
128 mb14885 m-55.7-69.7—
116 mb15510 m-57.9-72.9—
104 mb16190 m-63.1-76.1—
100 mb16430 m-65.3-78.3255° 43 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

Arkansas briefing

Not an official warning service. Warnings and watches are the National Weather Service’s, outlooks and reports the Storm Prediction Center’s and the Weather Prediction Center’s (Data: NOAA/NWS, NOAA/SPC, NOAA/WPC). When a warning is issued for you, act on it, and use weather.gov or a NOAA Weather Radio for where you are.