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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 Slidell, LA (LIX), 00Z. Its levels are in the table below.
Observed Sounding at Slidell, LA (LIX), for (3 h 59 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)
Slidell, LA (LIX): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1015 mb10 m30.018.0325° 1 kt
1000 mb141 m25.817.8355° 19 kt
981 mb305 m24.217.2345° 24 kt
948 mb610 m21.416.7000° 28 kt
925 mb821 m19.616.0350° 26 kt
910 mb962 m19.615.7—
868 mb1368 m16.613.8—
852 mb1524 m15.612.8355° 10 kt
850 mb1547 m15.412.7355° 8 kt
822 mb1829 m12.911.8000° 5 kt
806 mb1996 m12.49.9—
793 mb2134 m11.69.3335° 8 kt
764 mb2438 m9.98.1315° 11 kt
747 mb2631 m8.87.3—
737 mb2743 m8.56.3305° 18 kt
725 mb2879 m8.64.2—
714 mb3006 m8.20.2—
700 mb3169 m6.8-0.2270° 18 kt
661 mb3638 m4.21.0—
651 mb3763 m3.41.6—
637 mb3940 m3.4-0.8—
626 mb4081 m2.6-2.4—
612 mb4264 m1.6-2.9—
591 mb4546 m0.8-7.2—
577 mb4739 m-0.3-9.3—
564 mb4921 m-1.7-11.7—
544 mb5208 m-3.9-12.9—
532 mb5384 m-4.9-20.9—
522 mb5533 m-5.5-20.5—
511 mb5700 m-6.3-26.3—
500 mb5870 m-7.5-26.5260° 21 kt
490 mb6026 m-8.7-22.7—
474 mb6281 m-10.5-24.5—
462 mb6477 m-10.1-25.1—
451 mb6662 m-9.9-41.9—
425 mb7114 m-13.5-40.5—
413 mb7330 m-14.5-42.5—
400 mb7570 m-16.3-45.3270° 35 kt
390 mb7761 m-17.7-45.7—
380 mb7955 m-19.5-45.5—
368 mb8194 m-19.9-48.9—
345 mb8671 m-23.5-48.5—
335 mb8886 m-25.3-42.3—
313 mb9377 m-28.7-36.7—
300 mb9680 m-31.3-56.3255° 42 kt
261 mb10647 m-39.3-61.3—
251 mb10913 m-41.7-51.7—
250 mb10940 m-41.9-48.9270° 30 kt
238 mb11271 m-44.7-51.7—
228 mb11556 m-46.7-57.7—
218 mb11851 m-49.1-62.1—
207 mb12192 m-51.9-70.0265° 31 kt
200 mb12410 m-53.7-69.7270° 35 kt
187 mb12839 m-55.7-64.7—
177 mb13187 m-58.3-72.3—
155 mb14017 m-61.7-81.7—
150 mb14220 m-62.5-81.5255° 33 kt
133 mb14953 m-66.5-83.5—
122 mb15472 m-68.9-83.9—
111 mb16031 m-72.7-84.7—
100 mb16640 m-72.5-85.5255° 25 kt
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

California 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.