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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 Mazatlán, Mexico (76458), 00Z. Its levels are in the table below.
Observed Sounding at Mazatlán, Mexico (76458), for (4 h 29 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 (60)
Mazatlán, Mexico (76458): the surface first, then up through the atmosphere. Temperature and dew point in °C, as measured.
PressureHeightTemperatureDew pointWind
1008 mb4 m33.026.0240° 4 kt
1000 mb78 m30.024.0280° 4 kt
975 mb302 m27.723.7270° 10 kt
955 mb486 m25.823.5—
943 mb597 m24.823.3275° 10 kt
931 mb709 m23.822.0—
925 mb766 m25.215.2295° 8 kt
912 mb890 m23.819.5—
880 mb1203 m21.918.9005° 4 kt
866 mb1343 m21.018.6—
850 mb1505 m21.017.1040° 10 kt
821 mb1806 m20.014.4045° 12 kt
766 mb2402 m16.89.1105° 16 kt
700 mb3165 m10.65.6095° 23 kt
688 mb3308 m9.44.8100° 23 kt
646 mb3831 m5.22.0—
633 mb3997 m5.2-3.8—
621 mb4154 m3.8-1.1—
611 mb4286 m2.6-0.7—
597 mb4474 m1.8-8.2—
570 mb4847 m-0.5-3.2—
558 mb5018 m-1.7-4.4—
545 mb5206 m-1.5-11.5—
534 mb5369 m-2.9-6.1—
522 mb5549 m-3.9-4.7—
512 mb5702 m-4.5-5.8170° 14 kt
500 mb5890 m-5.3-7.2165° 16 kt
454 mb6638 m-10.3-13.2—
436 mb6947 m-11.5-14.8—
422 mb7196 m-13.0-29.3185° 25 kt
400 mb7600 m-15.3-27.3190° 27 kt
385 mb7887 m-17.1-20.2—
373 mb8123 m-18.3-27.3—
345 mb8697 m-22.3-26.7225° 18 kt
332 mb8980 m-24.3-26.4—
318 mb9292 m-26.5-31.3195° 27 kt
300 mb9710 m-28.5-31.8210° 29 kt
277 mb10277 m-32.9-34.6—
250 mb10990 m-38.5-43.5225° 29 kt
238 mb11326 m-40.7-48.7—
225 mb11702 m-44.1-52.1230° 27 kt
214 mb12037 m-47.1-55.1—
203 mb12383 m-50.1-63.1—
200 mb12480 m-50.9-64.9235° 33 kt
171 mb13473 m-59.0-73.0245° 39 kt
160 mb13895 m-62.5-76.5—
150 mb14290 m-65.5-76.5245° 23 kt
140 mb14705 m-69.3-78.3240° 21 kt
120 mb15605 m-73.2-81.8265° 10 kt
108 mb16221 m-75.9-84.2130° 2 kt
100 mb16670 m-77.9-85.9130° 14 kt
88 mb17393 m-80.6-86.6085° 8 kt
77 mb18184 m-79.5-86.5—
64 mb19237 m-68.9-89.1160° 12 kt
53 mb20377 m-65.5-94.5150° 18 kt
43 mb21660 m-63.4-96.4035° 18 kt
33 mb23316 m-56.6-91.0135° 10 kt
20 mb26530 m-50.9-86.9165° 6 kt
10 mb31110 m-43.7-81.7315° 14 kt
8 mb32631 m-39.9-78.9—
Every station with a sounding (78)

SPC observed soundings checked · Data: NOAA/SPC

Maryland 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.